PHP Manuál
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mysql_real_escape_string

(PHP 4 >= 4.3.0)

mysql_real_escape_string --  Escapes special characters in a string for use in a SQL statement, taking into account the current charset of the connection.

Description

string mysql_real_escape_string ( string unescaped_string [, resource link_identifier])

This function will escape special characters in the unescaped_string, taking into account the current charset of the connection so that it is safe to place it in a mysql_query().

Poznámka: mysql_real_escape_string() does not escape % and _.

Príklad 1. mysql_real_escape_string() example

<?php
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) {
    die('Could not connect: ' . mysql_error());
}
$item = "Zak's and Derick's Laptop";
$escaped_item = mysql_real_escape_string($item, $link);
printf("Escaped string: %s\n", $escaped_item);
?>

The above example would produce the following output: 

Escaped string: Zak\'s and Derick\'s Laptop

See also mysql_escape_string() and mysql_client_encoding().

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mysql_queryHoremysql_result