stripslashes

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

    stripslashes — Rimuove gli slash aggiunti con addslashes()

    Descrizione

    stripslashes(string $str): string

    Rimuove i backslash da una stringa. (\' diventa ' e così via.) I doppi backslash (\\) sono ridotti ad un singolo backslash (\).

    Un esempio di uso di stripslashes() è dato dall'opzione PHP magic_quotes_gpc che, quando è impostata a on (come è per default), e non siinseriscono questi dati in una procedura (tipo in un database) che richiede il carattere di escape. Ad esempio, se si visualizza dati da un form HTML.

    Example #1 Esempio di uso di stripslashes()

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

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

    Nota:

    La funzione stripslashes() non è ricorsiva Se si desidera utilizzare questa funzione su una matrice multi-dimensionale, occorre utilizzare una funzione ricorsiva.

    Example #2 Esempio di utilizzo di stripslashes() su una matrice

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

    return     $value;
    }

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

    // Output
    print_r($array);
    ?>

    Il precedente esempio visualizzerà:

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

    Per maggiori dettagli su "magic quotes", vedere get_magic_quotes_gpc().

    Vedere anche addslashes() e get_magic_quotes_gpc().

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    User Contributed Notes 6 notes

    up
    71
    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.
    up
    6
    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 ;
    }

    ?>
    up
    1
    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);
    ?>
    up
    2
    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
    up
    1
    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.
    up
    1
    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!
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