Rechercher une fonction PHP

addslashes

(PHP 4, PHP 5, PHP 7)

addslashesQuote string with slashes

Description

addslashes ( string $str ) : string

Returns a string with backslashes added before characters that need to be escaped. These characters are:

  • single quote (')
  • double quote (")
  • backslash (\)
  • NUL (the NUL byte)

A use case of addslashes() is escaping the aforementioned characters in a string that is to be evaluated by PHP:

<?php
$str 
"O'Reilly?";
eval(
"echo '" addslashes($str) . "';");
?>

Prior to PHP 5.4.0, the PHP directive magic_quotes_gpc was on by default and it essentially ran addslashes() on all GET, POST and COOKIE data. addslashes() must not be used on strings that have already been escaped with magic_quotes_gpc, as the strings will be double escaped. get_magic_quotes_gpc() can be used to check if magic_quotes_gpc is on.

The addslashes() is sometimes incorrectly used to try to prevent SQL Injection. Instead, database-specific escaping functions and/or prepared statements should be used.

PHP: addslashes - Manual Home of Manuel PHP  Contents Haut

Parameters

str

The string to be escaped.

PHP: addslashes - Manual Home of Manuel PHP  Contents Haut

Return Values

Returns the escaped string.

PHP: addslashes - Manual Home of Manuel PHP  Contents Haut

Examples

Example #1 An addslashes() example

<?php
$str 
"Is your name O'Reilly?";

// Outputs: Is your name O\'Reilly?
echo addslashes($str);
?>

PHP: addslashes - Manual Home of Manuel PHP  Contents Haut

See Also

Find a PHP function

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Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-function.addslashes.html

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References

  1. View the html document Language of the document:fr Manuel PHP : http://php.net

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