上传文件，提示文件不存在的解决方法

在做公司的一个项目中，需要上传文件，使用的是AjaxUpload JS组件，选择完文件后，发送请求到指定接口，随即返回服务器上文件的相对路径，然后PHP再做其他工作（这不是重点）

处理上传的PHP程序，限制其文件大小为20M

php.ini中

post_max_size 20M

upload_max_filesize 20M

memory_limit 256M

ngint.conf中

client_max_body_size 518M

上传20M以下的文件，没有问题，但是，例如上传80M的文件，会报错，文件不存在，

if ( ! isset($_FILES[$field]))
{
　　$this->set_error(‘upload_no_file_selected‘);
　　return FALSE;
}

网上的解决方法是 设置 php.ini和nginx.conf中相应的属性，仍然报错，后来参考了鸟哥的一篇文章，才找到原因

解决方法:

php.ini中的post_max_size和upload_max_filesize 的值要大些，不能仅限于规定的值，比如这个20M，根据情况，这里设置200M，再次上传80M的文件，根据PHP程序本身的 $_FILES[‘file‘][‘error‘] 可得出 文件大小 超过限制 这样的提示

1. SAPI_API SAPI_POST_HANDLER_FUNC(rfc1867_post_handler)
2. {
3.         char *boundary, *s=NULL, *boundary_end = NULL, *start_arr=NULL, *array_index=NULL;
4.         char *temp_filename=NULL, *lbuf=NULL, *abuf=NULL;
5.         int boundary_len=0, total_bytes=0, cancel_upload=0, is_arr_upload=0, array_len=0;
6.         int max_file_size=0, skip_upload=0, anonindex=0, is_anonymous;
7.         zval *http_post_files=NULL; HashTable *uploaded_files=NULL;
8. #if HAVE_MBSTRING && !defined(COMPILE_DL_MBSTRING)
9.         int str_len = 0, num_vars = 0, num_vars_max = 2*10, *len_list = NULL;
10.         char **val_list = NULL;
11. #endif
12.         zend_bool magic_quotes_gpc;
13.         multipart_buffer *mbuff;
14.         zval *array_ptr = (zval *) arg;
15.         int fd=-1;
16.         zend_llist header;
17.         void *event_extra_data = NULL;
18.         int llen = 0;
19.  
20.           /**
21.            *检查是否超出最大上传文件大小，这是重点
22.            *从request_global中取出request_info结构体中的content_length元素，这个content_length应该是http 头信息中发给服务器的
23.            *如果content_length 大于php.ini中设置的post_max_size,就会由sapi_errror触发一个warning,这个warning不会被php接受（还有待研究）
24.            *通过nginx的log日志中也能发现此warning
25.            *
26.            */　　
27.         if (SG(request_info).content_length > SG(post_max_size)) {
28.                 sapi_module.sapi_error(E_WARNING, "POST Content-Length of %ld bytes exceeds the limit of %ld bytes", SG(request_info).content_length, SG(post_max_size));
29.                 return;
30.         }
31.  
32.         //取得上传文件的分隔符
33.         boundary = strstr(content_type_dup, "boundary");
34.         if (!boundary || !(boundary=strchr(boundary, ‘=‘))) {
35.                 sapi_module.sapi_error(E_WARNING, "Missing boundary in multipart/form-data POST data");
36.                 return;
37.         }
38.  
39.         boundary++;
40.         boundary_len = strlen(boundary);
41.  
42.         if (boundary[0] == ‘"‘) {
43.                 boundary++;
44.                 boundary_end = strchr(boundary, ‘"‘);
45.                 if (!boundary_end) {
46.                         sapi_module.sapi_error(E_WARNING, "Invalid boundary in multipart/form-data POST data");
47.                         return;
48.                 }
49.         } else {
50.                 /* search for the end of the boundary */
51.                 boundary_end = strchr(boundary, ‘,‘);
52.         }
53.         if (boundary_end) {
54.                 boundary_end[0] = ‘‘;
55.                 boundary_len = boundary_end-boundary;
56.         }
57.  
58.         /* Initialize the buffer */
59.         if (!(mbuff = multipart_buffer_new(boundary, boundary_len))) {
60.                 sapi_module.sapi_error(E_WARNING, "Unable to initialize the input buffer");
61.                 return;
62.         }
63.  
64.         //初始化$_FILE变量
65.         zend_hash_init(&PG(rfc1867_protected_variables), 5, NULL, NULL, 0);
66.  
67.         ALLOC_HASHTABLE(uploaded_files);
68.         zend_hash_init(uploaded_files, 5, NULL, (dtor_func_t) free_estring, 0);
69.         SG(rfc1867_uploaded_files) = uploaded_files;
70.  
71.         ALLOC_ZVAL(http_post_files);
72.         array_init(http_post_files);
73.         INIT_PZVAL(http_post_files);
74.         PG(http_globals)[TRACK_VARS_FILES] = http_post_files; //TRACK_VARS_FILE正是_FILE在php_core_globals.http_globals中的index (注1)
75.  
76. #if HAVE_MBSTRING && !defined(COMPILE_DL_MBSTRING)
77.         if (php_mb_encoding_translation(TSRMLS_C)) {
78.                 val_list = (char **)ecalloc(num_vars_max+2, sizeof(char *));
79.                 len_list = (int *)ecalloc(num_vars_max+2, sizeof(int));
80.         }
81. #endif
82.         zend_llist_init(&header, sizeof(mime_header_entry), (llist_dtor_func_t) php_free_hdr_entry, 0);
83.  
84.         if (php_rfc1867_callback != NULL) {
85.                 multipart_event_start event_start;
86.  
87.                 event_start.content_length = SG(request_info).content_length;
88.                 if (php_rfc1867_callback(MULTIPART_EVENT_START, &event_start, &event_extra_data TSRMLS_CC) == FAILURE) {
89.                         goto fileupload_done;
90.                 }
91.         }
92.  
93.         while (!multipart_buffer_eof(mbuff TSRMLS_CC))
94.         {
95.                 char buff[FILLUNIT];
96.                 char *cd=NULL,*param=NULL,*filename=NULL, *tmp=NULL;
97.                 size_t blen=0, wlen=0;
98.                 off_t offset;
99.  
100.                 zend_llist_clean(&header);
101.  
102.                 if (!multipart_buffer_headers(mbuff, &header TSRMLS_CC)) {
103.                         goto fileupload_done;
104.                 }
105.  
106.                 if ((cd = php_mime_get_hdr_value(header, "Content-Disposition"))) {
107.                         char *pair=NULL;
108.                         int end=0;
109.  
110.                         while (isspace(*cd)) {
111.                                 ++cd;
112.                         }
113.  
114.                         while (*cd && (pair = php_ap_getword(&cd, ‘;‘)))
115.                         {
116.                                 char *key=NULL, *word = pair;
117.  
118.                                 while (isspace(*cd)) {
119.                                         ++cd;
120.                                 }
121.  
122.                                 if (strchr(pair, ‘=‘)) {
123.                                         key = php_ap_getword(&pair, ‘=‘);
124.  
125.                                         if (!strcasecmp(key, "name")) {
126.                                                 if (param) {
127.                                                         efree(param);
128.                                                 }
129.                                                 param = php_ap_getword_conf(&pair TSRMLS_CC);
130.                                         } else if (!strcasecmp(key, "filename")) {
131.                                                 if (filename) {
132.                                                         efree(filename);
133.                                                 }
134.                                                 filename = php_ap_getword_conf(&pair TSRMLS_CC);
135.                                         }
136.                                 }
137.                                 if (key) {
138.                                         efree(key);
139.                                 }
140.                                 efree(word);
141.                         }
142.  
143.                         /* Normal form variable, safe to read all data into memory */
144.                         if (!filename && param) {
145.                                 unsigned int value_len;
146.                                 char *value = multipart_buffer_read_body(mbuff, &value_len TSRMLS_CC);
147.                                 unsigned int new_val_len; /* Dummy variable */
148.  
149.                                 if (!value) {
150.                                         value = estrdup("");
151.                                 }
152.  
153.                                 if (sapi_module.input_filter(PARSE_POST, param, &value, value_len, &new_val_len TSRMLS_CC)) {
154.                                         if (php_rfc1867_callback != NULL) {
155.                                                 multipart_event_formdata event_formdata;
156.                                                 size_t newlength = 0;
157.  
158.                                                 event_formdata.post_bytes_processed = SG(read_post_bytes);
159.                                                 event_formdata.name = param;
160.                                                 event_formdata.value = &value;
161.                                                 event_formdata.length = new_val_len;
162.                                                 event_formdata.newlength = &newlength;
163.                                                 if (php_rfc1867_callback(MULTIPART_EVENT_FORMDATA, &event_formdata, &event_extra_data TSRMLS_CC) == FAILURE) {
164.                                                         efree(param);
165.                                                         efree(value);
166.                                                         continue;
167.                                                 }
168.                                                 new_val_len = newlength;
169.                                         }
170.  
171. #if HAVE_MBSTRING && !defined(COMPILE_DL_MBSTRING)
172.                                         if (php_mb_encoding_translation(TSRMLS_C)) {
173.                                                 php_mb_gpc_stack_variable(param, value, &val_list, &len_list,
174.                                                                                                   &num_vars, &num_vars_max TSRMLS_CC);
175.                                         } else {
176.                                                 safe_php_register_variable(param, value, new_val_len, array_ptr, 0 TSRMLS_CC);
177.                                         }
178. #else
179.                                         safe_php_register_variable(param, value, new_val_len, array_ptr, 0 TSRMLS_CC);
180. #endif
181.                                 } else if (php_rfc1867_callback != NULL) {
182.                                         multipart_event_formdata event_formdata;
183.  
184.                                         event_formdata.post_bytes_processed = SG(read_post_bytes);
185.                                         event_formdata.name = param;
186.                                         event_formdata.value = &value;
187.                                         event_formdata.length = value_len;
188.                                         event_formdata.newlength = NULL;
189.                                         php_rfc1867_callback(MULTIPART_EVENT_FORMDATA, &event_formdata, &event_extra_data TSRMLS_CC);
190.                                 }
191.  
192.                                 if (!strcasecmp(param, "MAX_FILE_SIZE")) {
193.                                         max_file_size = atol(value);
194.                                 }
195.  
196.                                 efree(param);
197.                                 efree(value);
198.                                 continue;
199.                         }
200.  
201.                         /* If file_uploads=off, skip the file part */
202.                         if (!PG(file_uploads)) {
203.                                 skip_upload = 1;
204.                         }
205.  
206.                         /* Return with an error if the posted data is garbled */
207.                         if (!param && !filename) {
208.                                 sapi_module.sapi_error(E_WARNING, "File Upload Mime headers garbled");
209.                                 goto fileupload_done;
210.                         }
211.  
212.                         if (!param) {
213.                                 is_anonymous = 1;
214.                                 param = emalloc(MAX_SIZE_ANONNAME);
215.                                 snprintf(param, MAX_SIZE_ANONNAME, "%u", anonindex++);
216.                         } else {
217.                                 is_anonymous = 0;
218.                         }
219.  
220.                         /* New Rule: never repair potential malicious user input */
221.                         if (!skip_upload) {
222.                                 char *tmp = param;
223.                                 long c = 0;
224.  
225.                                 while (*tmp) {
226.                                         if (*tmp == ‘[‘) {
227.                                                 c++;
228.                                         } else if (*tmp == ‘]‘) {
229.                                                 c--;
230.                                                 if (tmp[1] && tmp[1] != ‘[‘) {
231.                                                         skip_upload = 1;
232.                                                         break;
233.                                                 }
234.                                         }
235.                                         if (c < 0) {
236.                                                 skip_upload = 1;
237.                                                 break;
238.                                         }
239.                                         tmp++;
240.                                 }
241.                         }
242.  
243.                         total_bytes = cancel_upload = 0;
244.  
245.                         if (!skip_upload) {
246.                                 /* Handle file */
247.                                 fd = php_open_temporary_fd_ex(PG(upload_tmp_dir), "php", &temp_filename, 1 TSRMLS_CC);
248.                                 if (fd==-1) {
249.                                         sapi_module.sapi_error(E_WARNING, "File upload error - unable to create a temporary file");
250.                                         cancel_upload = UPLOAD_ERROR_E;
251.                                 }
252.                         }
253.  
254.                         if (!skip_upload && php_rfc1867_callback != NULL) {
255.                                 multipart_event_file_start event_file_start;
256.  
257.                                 event_file_start.post_bytes_processed = SG(read_post_bytes);
258.                                 event_file_start.name = param;
259.                                 event_file_start.filename = &filename;
260.                                 if (php_rfc1867_callback(MULTIPART_EVENT_FILE_START, &event_file_start, &event_extra_data TSRMLS_CC) == FAILURE) {
261.                                         if (temp_filename) {
262.                                                 if (cancel_upload != UPLOAD_ERROR_E) { /* file creation failed */
263.                                                         close(fd);
264.                                                         unlink(temp_filename);
265.                                                 }
266.                                                 efree(temp_filename);
267.                                         }
268.                                         temp_filename="";
269.                                         efree(param);
270.                                         efree(filename);
271.                                         continue;
272.                                 }
273.                         }
274.  
275.                         if (skip_upload) {
276.                                 efree(param);
277.                                 efree(filename);
278.                                 continue;
279.                         }
280.  
281.                         if(strlen(filename) == 0) {
282. #if DEBUG_FILE_UPLOAD
283.                                 sapi_module.sapi_error(E_NOTICE, "No file uploaded");
284. #endif
285.                                 cancel_upload = UPLOAD_ERROR_D;
286.                         }
287.  
288.                         offset = 0;
289.                         end = 0;
290.                         while (!cancel_upload && (blen = multipart_buffer_read(mbuff, buff, sizeof(buff), &end TSRMLS_CC)))
291.                         {
292.                                 if (php_rfc1867_callback != NULL) {
293.                                         multipart_event_file_data event_file_data;
294.  
295.                                         event_file_data.post_bytes_processed = SG(read_post_bytes);
296.                                         event_file_data.offset = offset;
297.                                         event_file_data.data = buff;
298.                                         event_file_data.length = blen;
299.                                         event_file_data.newlength = &blen;
300.                                         if (php_rfc1867_callback(MULTIPART_EVENT_FILE_DATA, &event_file_data, &event_extra_data TSRMLS_CC) == FAILURE) {
301.                                                 cancel_upload = UPLOAD_ERROR_X;
302.                                                 continue;
303.                                         }
304.                                 }
305.  
306.                                 if (PG(upload_max_filesize) > 0 && total_bytes > PG(upload_max_filesize)) {
307. #if DEBUG_FILE_UPLOAD
308.                                         sapi_module.sapi_error(E_NOTICE, "upload_max_filesize of %ld bytes exceeded - file [%s=%s] not saved", PG(upload_max_filesize), param, filename);
309. #endif
310.                                         cancel_upload = UPLOAD_ERROR_A;
311.                                 } else if (max_file_size && (total_bytes > max_file_size)) {
312. #if DEBUG_FILE_UPLOAD
313.                                         sapi_module.sapi_error(E_NOTICE, "MAX_FILE_SIZE of %ld bytes exceeded - file [%s=%s] not saved", max_file_size, param, filename);
314. #endif
315.                                         cancel_upload = UPLOAD_ERROR_B;
316.                                 } else if (blen > 0) {
317.  
318.                                         wlen = write(fd, buff, blen);
319.  
320.                                         if (wlen == -1) {
321.                                                 /* write failed */
322. #if DEBUG_FILE_UPLOAD
323.                                                 sapi_module.sapi_error(E_NOTICE, "write() failed - %s", strerror(errno));
324. #endif
325.                                                 cancel_upload = UPLOAD_ERROR_F;
326.                                         } else if (wlen < blen) {
327. #if DEBUG_FILE_UPLOAD
328.                                                 sapi_module.sapi_error(E_NOTICE, "Only %d bytes were written, expected to write %d", wlen, blen);
329. #endif
330.                                                 cancel_upload = UPLOAD_ERROR_F;
331.                                         } else {
332.                                                 total_bytes += wlen;
333.                                         }
334.  
335.                                         offset += wlen;
336.                                 }
337.                         }
338.                         if (fd!=-1) { /* may not be initialized if file could not be created */
339.                                 close(fd);
340.                         }
341.                         if (!cancel_upload && !end) {
342. #if DEBUG_FILE_UPLOAD
343.                                 sapi_module.sapi_error(E_NOTICE, "Missing mime boundary at the end of the data for file %s", strlen(filename) > 0 ? filename : "");
344. #endif
345.                                 cancel_upload = UPLOAD_ERROR_C;
346.                         }
347. #if DEBUG_FILE_UPLOAD
348.                         if(strlen(filename) > 0 && total_bytes == 0 && !cancel_upload) {
349.                                 sapi_module.sapi_error(E_WARNING, "Uploaded file size 0 - file [%s=%s] not saved", param, filename);
350.                                 cancel_upload = 5;
351.                         }
352. #endif
353.  
354.                         if (php_rfc1867_callback != NULL) {
355.                                 multipart_event_file_end event_file_end;
356.  
357.                                 event_file_end.post_bytes_processed = SG(read_post_bytes);
358.                                 event_file_end.temp_filename = temp_filename;
359.                                 event_file_end.cancel_upload = cancel_upload;
360.                                 if (php_rfc1867_callback(MULTIPART_EVENT_FILE_END, &event_file_end, &event_extra_data TSRMLS_CC) == FAILURE) {
361.                                         cancel_upload = UPLOAD_ERROR_X;
362.                                 }
363.                         }
364.  
365.                         if (cancel_upload) {
366.                                 if (temp_filename) {
367.                                         if (cancel_upload != UPLOAD_ERROR_E) { /* file creation failed */
368.                                                 unlink(temp_filename);
369.                                         }
370.                                         efree(temp_filename);
371.                                 }
372.                                 temp_filename="";
373.                         } else {
374.                                 zend_hash_add(SG(rfc1867_uploaded_files), temp_filename, strlen(temp_filename) + 1, &temp_filename, sizeof(char *), NULL);
375.                         }
376.  
377.                         /* is_arr_upload is true when name of file upload field
378. * ends in [.*]
379. * start_arr is set to point to 1st [
380. */
381.                         is_arr_upload = (start_arr = strchr(param,‘[‘)) && (param[strlen(param)-1] == ‘]‘);
382.  
383.                         if (is_arr_upload) {
384.                                 array_len = strlen(start_arr);
385.                                 if (array_index) {
386.                                         efree(array_index);
387.                                 }
388.                                 array_index = estrndup(start_arr+1, array_len-2);
389.                         }
390.  
391.                         /* Add $foo_name */
392.                         if (llen < strlen(param) + MAX_SIZE_OF_INDEX + 1) {
393.                                 llen = strlen(param);
394.                                 lbuf = (char *) safe_erealloc(lbuf, llen, 1, MAX_SIZE_OF_INDEX + 1);
395.                                 llen += MAX_SIZE_OF_INDEX + 1;
396.                         }
397.  
398.                         if (is_arr_upload) {
399.                                 if (abuf) efree(abuf);
400.                                 abuf = estrndup(param, strlen(param)-array_len);
401.                                 snprintf(lbuf, llen, "%s_name[%s]", abuf, array_index);
402.                         } else {
403.                                 snprintf(lbuf, llen, "%s_name", param);
404.                         }
405.  
406. #if HAVE_MBSTRING && !defined(COMPILE_DL_MBSTRING)
407.                         if (php_mb_encoding_translation(TSRMLS_C)) {
408.                                 if (num_vars>=num_vars_max){
409.                                         php_mb_gpc_realloc_buffer(&val_list, &len_list, &num_vars_max,
410.                                                                                           1 TSRMLS_CC);
411.                                 }
412.                                 val_list[num_vars] = filename;
413.                                 len_list[num_vars] = strlen(filename);
414.                                 num_vars++;
415.                                 if(php_mb_gpc_encoding_detector(val_list, len_list, num_vars, NULL TSRMLS_CC) == SUCCESS) {
416.                                         str_len = strlen(filename);
417.                                         php_mb_gpc_encoding_converter(&filename, &str_len, 1, NULL, NULL TSRMLS_CC);
418.                                 }
419.                                 s = php_mb_strrchr(filename, ‘\‘ TSRMLS_CC);
420. if ((tmp = php_mb_strrchr(filename, ‘/‘ TSRMLS_CC)) > s) {
421. s = tmp;
422. }
423. num_vars--;
424. goto filedone;
425. }
426. #endif
427. /* The check should technically be needed for win32 systems only where
428. * it is a valid path separator. However, IE in all it‘s wisdom always sends
429.                          * the full path of the file on the user‘s filesystem, which means that unless
430. * the user does basename() they get a bogus file name. Until IE‘s user base drops
431.                          * to nill or problem is fixed this code must remain enabled for all systems.
432.                          */
433.                         s = strrchr(filename, ‘\‘);
434. if ((tmp = strrchr(filename, ‘/‘)) > s) {
435. s = tmp;
436. }
437. #ifdef PHP_WIN32
438. if (PG(magic_quotes_gpc)) {
439. s = s ? s : filename;
440. tmp = strrchr(s, ‘‘‘);
441.                                 s = tmp > s ? tmp : s;
442.                                 tmp = strrchr(s, ‘"‘);
443.                                 s = tmp > s ? tmp : s;
444.                         }
445. #endif
446.  
447. #if HAVE_MBSTRING && !defined(COMPILE_DL_MBSTRING)
448. filedone:
449. #endif
450.  
451.                         if (!is_anonymous) {
452.                                 if (s && s > filename) {
453.                                         safe_php_register_variable(lbuf, s+1, strlen(s+1), NULL, 0 TSRMLS_CC);
454.                                 } else {
455.                                         safe_php_register_variable(lbuf, filename, strlen(filename), NULL, 0 TSRMLS_CC);
456.                                 }
457.                         }
458.  
459.                         /* Add $foo[name] */
460.                         if (is_arr_upload) {
461.                                 snprintf(lbuf, llen, "%s[name][%s]", abuf, array_index);
462.                         } else {
463.                                 snprintf(lbuf, llen, "%s[name]", param);
464.                         }
465.                         if (s && s > filename) {
466.                                 register_http_post_files_variable(lbuf, s+1, http_post_files, 0 TSRMLS_CC);
467.                         } else {
468.                                 register_http_post_files_variable(lbuf, filename, http_post_files, 0 TSRMLS_CC);
469.                         }
470.                         efree(filename);
471.                         s = NULL;
472.  
473.                         /* Possible Content-Type: */
474.                         if (cancel_upload || !(cd = php_mime_get_hdr_value(header, "Content-Type"))) {
475.                                 cd = "";
476.                         } else {
477.                                 /* fix for Opera 6.01 */
478.                                 s = strchr(cd, ‘;‘);
479.                                 if (s != NULL) {
480.                                         *s = ‘‘;
481.                                 }
482.                         }
483.  
484.                         /* Add $foo_type */
485.                         if (is_arr_upload) {
486.                                 snprintf(lbuf, llen, "%s_type[%s]", abuf, array_index);
487.                         } else {
488.                                 snprintf(lbuf, llen, "%s_type", param);
489.                         }
490.                         if (!is_anonymous) {
491.                                 safe_php_register_variable(lbuf, cd, strlen(cd), NULL, 0 TSRMLS_CC);
492.                         }
493.  
494.                         /* Add $foo[type] */
495.                         if (is_arr_upload) {
496.                                 snprintf(lbuf, llen, "%s[type][%s]", abuf, array_index);
497.                         } else {
498.                                 snprintf(lbuf, llen, "%s[type]", param);
499.                         }
500.                         register_http_post_files_variable(lbuf, cd, http_post_files, 0 TSRMLS_CC);
501.  
502.                         /* Restore Content-Type Header */
503.                         if (s != NULL) {
504.                                 *s = ‘;‘;
505.                         }
506.                         s = "";
507.  
508.                         /* Initialize variables */
509.                         add_protected_variable(param TSRMLS_CC);
510.  
511.                         magic_quotes_gpc = PG(magic_quotes_gpc);
512.                         PG(magic_quotes_gpc) = 0;
513.                         /* if param is of form xxx[.*] this will cut it to xxx */
514.                         if (!is_anonymous) {
515.                                 safe_php_register_variable(param, temp_filename, strlen(temp_filename), NULL, 1 TSRMLS_CC);
516.                         }
517.  
518.                         /* Add $foo[tmp_name] */
519.                         if (is_arr_upload) {
520.                                 snprintf(lbuf, llen, "%s[tmp_name][%s]", abuf, array_index);
521.                         } else {
522.                                 snprintf(lbuf, llen, "%s[tmp_name]", param);
523.                         }
524.                         add_protected_variable(lbuf TSRMLS_CC);
525.                         register_http_post_files_variable(lbuf, temp_filename, http_post_files, 1 TSRMLS_CC);
526.  
527.                         PG(magic_quotes_gpc) = magic_quotes_gpc;
528.  
529.                         {
530.                                 zval file_size, error_type;
531.  
532.                                 error_type.value.lval = cancel_upload;
533.                                 error_type.type = IS_LONG;
534.  
535.                                 /* Add $foo[error] */
536.                                 if (cancel_upload) {
537.                                         file_size.value.lval = 0;
538.                                         file_size.type = IS_LONG;
539.                                 } else {
540.                                         file_size.value.lval = total_bytes;
541.                                         file_size.type = IS_LONG;
542.                                 }
543.  
544.                                 if (is_arr_upload) {
545.                                         snprintf(lbuf, llen, "%s[error][%s]", abuf, array_index);
546.                                 } else {
547.                                         snprintf(lbuf, llen, "%s[error]", param);
548.                                 }
549.                                 register_http_post_files_variable_ex(lbuf, &error_type, http_post_files, 0 TSRMLS_CC);
550.  
551.                                 /* Add $foo_size */
552.                                 if (is_arr_upload) {
553.                                         snprintf(lbuf, llen, "%s_size[%s]", abuf, array_index);
554.                                 } else {
555.                                         snprintf(lbuf, llen, "%s_size", param);
556.                                 }
557.                                 if (!is_anonymous) {
558.                                         safe_php_register_variable_ex(lbuf, &file_size, NULL, 0 TSRMLS_CC);
559.                                 }
560.  
561.                                 /* Add $foo[size] */
562.                                 if (is_arr_upload) {
563.                                         snprintf(lbuf, llen, "%s[size][%s]", abuf, array_index);
564.                                 } else {
565.                                         snprintf(lbuf, llen, "%s[size]", param);
566.                                 }
567.                                 register_http_post_files_variable_ex(lbuf, &file_size, http_post_files, 0 TSRMLS_CC);
568.                         }
569.                         efree(param);
570.                 }
571.         }
572. fileupload_done:
573.         if (php_rfc1867_callback != NULL) {
574.                 multipart_event_end event_end;
575.  
576.                 event_end.post_bytes_processed = SG(read_post_bytes);
577.                 php_rfc1867_callback(MULTIPART_EVENT_END, &event_end, &event_extra_data TSRMLS_CC);
578.         }
579.  
580.         SAFE_RETURN;
581. }

上传文件，提示文件不存在的解决方法,布布扣,bubuko.com

上传文件，提示文件不存在的解决方法

原文：http://www.cnblogs.com/taek/p/3812649.html