stripslashes

(PHP 4, PHP 5, PHP 7, PHP 8)

stripslashes — 反引用一个引用字符串

说明

stripslashes(string $string): string

反引用一个引用字符串。

如果不需要将数据插入到一个需要转义的位置（例如数据库）则可以使用 stripslashes()。例如，直接从 HTML 表单输出数据。

参数

string: 输入字符串。

返回值

返回一个去除转义反斜线后的字符串（\' 转换为 ' 等等）。双反斜线（\\）被转换为单个反斜线（\）。

示例

示例 #1 stripslashes() 示例

<?php
$str = "Is your name O\'reilly?";

// 输出: Is your name O'reilly?
echo stripslashes($str);
?>

注意:
stripslashes() 是非递归的。如果你想要在多维数组中使用该函数，你需要使用递归函数。

示例 #2 对数组使用 stripslashes()

<?php
function stripslashes_deep($value)
{
    $value = is_array($value) ?
                array_map('stripslashes_deep', $value) :
                stripslashes($value);

    return $value;
}

// 示例
$array = array("f\\'oo", "b\\'ar", array("fo\\'o", "b\\'ar"));
$array = stripslashes_deep($array);

// 输出
print_r($array);
?>

以上示例会输出：

Array
(
    [0] => f'oo
    [1] => b'ar
    [2] => Array
        (
            [0] => fo'o
            [1] => b'ar
        )

)

参见

addslashes() - 使用反斜线引用字符串
get_magic_quotes_gpc() - 获取当前 magic_quotes_gpc 的配置选项设置

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＋添加备注

用户贡献的备注 6 notes

down

ivijan dot stefan at gmail dot com ¶

10 years ago

Sometimes for some reason is happens that PHP or Javascript or some naughty insert a lot of  backslash. Ordinary function does not notice that. Therefore, it is necessary that the bit "inflate":

<?php
function removeslashes($string)
{
    $string=implode("",explode("\\",$string));
    return stripslashes(trim($string));
}

/* Example */

$text="My dog don\\\\\\\\\\\\\\\\'t like the postman!";
echo removeslashes($text);
?>

RESULT: My dog don't like the postman!

This flick has served me wery well, because I had this problem before.

down

shredder at technodrome dot com ¶

15 years ago

Hi, 

Here are recursive addslashes / stripslashes functions.
given a string - it will simply add / strip slashes
given an array - it will recursively add / strip slashes from the array and all of it subarrays. 
if the value is not a string or array - it will remain unmodified!

<?php

function add_slashes_recursive( $variable )
{
    if ( is_string( $variable ) )
        return addslashes( $variable ) ;

    elseif ( is_array( $variable ) )
        foreach( $variable as $i => $value )
            $variable[ $i ] = add_slashes_recursive( $value ) ;

    return $variable ;
}

function strip_slashes_recursive( $variable )
{
    if ( is_string( $variable ) )
        return stripslashes( $variable ) ;
    if ( is_array( $variable ) )
        foreach( $variable as $i => $value )
            $variable[ $i ] = strip_slashes_recursive( $value ) ;
    
    return $variable ; 
}

?>

down

Tom Worster ¶

15 years ago

A replacement that should be safe on utf-8 strings.
<?php
  preg_replace(array('/\x5C(?!\x5C)/u', '/\x5C\x5C/u'), array('','\\'), $s);
?>

down

o-zone at zerozone dot it ¶

15 years ago

If you need to remove all slashes from a string, here's a quick hack:



<?php

function stripallslashes($string) {

    while(strchr($string,'\\')) {

        $string = stripslashes($string);

    }

}

?>



Hope it's usefull , O-Zone

down

stoic ¶

18 years ago

in response to crab dot crab at gmail dot com:

$value need not be passed by reference. The 'stripped' value is returned. The passed value is not altered.

down

hash at samurai dot fm ¶

21 years ago

Might I warn readers that they should be vary careful with the use of stripslashes on Japanese text. The shift_jis character set includes a number of two-byte code charcters that contain the hex-value 0x5c (backslash) which will get stripped by this function thus garbling those characters.

What a nightmare!