PHP 处理反斜杠【转义字符处理】

PHP提供了自动在字符串中加入或去除转义字符的函数，在SQL语句中是相当实用的：

";

//进行SQL查询的关键字转义
$title = addslashes($title);
$query = "select * frome atricles where title ='".$title."'";
echo $query."
";

//去掉对title的转义
$title = stripslashes($title);
$query = "select * frome atricles where title ='".$title."'";
echo $query."
";

echo "

";
//与使用addcslashes()等效
$title = addcslashes($title,"'");
$query = "select * frome atricles where title ='".$title."'";
echo $query."
";

$str = "money";

//所有字母前加上\
$str = addcslashes($str, "a..z");
echo "$str"."
";