实例
转义字符串中的特殊字符：
<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno($con))
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
mysqli_query($con,"CREATE TABLE myPersons LIKE Persons");
$newpers="Da‘Silva"
// This query will fail, cause we did not
escape $newpers
mysqli_query($con,"INSERT into myPersons (Lastname)
VALUES (‘$newpers‘)");
$newpers=mysqli_real_escape_string($con,$newpers);
// This query will
work, cause we escaped $newpers
mysqli_query($con,"INSERT into myPersons
(Lastname) VALUES (‘$newpers‘)");
mysqli_close($con);
?>
定义和用法
mysqli_real_escape_string() 函数转义在 SQL 语句中使用的字符串中的特殊字符。
语法
mysqli_real_escape_string(connection,escapestring);
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参数
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描述
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connection
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必需。规定要使用的 MySQL 连接。
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escapestring
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必需。要转义的字符串。编码的字符是 NUL（ASCII 0）、\n、\r、\、‘、" 和 Control-Z。
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技术细节
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返回值：
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返回已转义的字符串。
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PHP 版本：
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5+
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