php中addslashes()和add*es()函数的区别分析

2. //向字符串中的特定字符添加反斜杠
3. $str = "Hello, my name is John Adams.";
4. echo $str;
5. echo addcslashes($str,'m');
6. echo addcslashes($str,'J');
7. ?>

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输出：

2. //向字符串中的预定义字符添加反斜杠
3. $str = "Who's John Adams?";
4. echo $str . " This is not safe in a database query.
   ";
5. echo addslashes($str) . " This is safe in a database query.";
6. ?>

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输出：

Who's John Adams? This is not safe in a database query. Who\'s John Adams? This is safe in a database query.

对于函数addslashes()和add*es()，都有对应的去除反斜杠的方法，分别为：stripcslashes函数和stripslashes函数。有兴趣的朋友，也可以研究下。