PHP addslashes() 函数

PHP addslashes() 函数用于返回一个带有斜杠的引号字符串。它适用于以下一些字符：

• 单引号 (')
• 双引号 (")
• 反斜杠 (\)
• NUL（NUL字节）

语法

string addslashes ( string $str );

示例1

<?php 
str = 'What does "WHO" mean?';
echo "Your string is :".str;
echo "<br>"."By using addslashes() function the result  is".addslashes($str); 
?> 

输出：

Your string is :What does "WHO" mean?
By using addslashes() function the result isWhat does \"WHO\" mean?

示例2

<?php
str = "Who's the father of PHP?";
echostr . " This is not safe in a database query.<br>";
echo addslashes($str) . " This is safe in a database query.";
?>

输出：

Who's the father of PHP? This is not safe in a database query.
Who\'s the father of PHP? This is safe in a database query.

示例3

<?php
str =  "Wow' PHP?";
eval("echo '" . addslashes(str) . "';");
?>

输出:

Wow' PHP?

addslashes()的用例是在一个字符串中转义上述字符，该字符串将由PHP进行评估：

示例4

<?php
str = "Is The Father of PHP'Rasmus?";
//Is The Father of PHP\'Rasmus?
echo addslashes(str);
?>

输出：

Is The Father of PHP\'Rasmus?