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# mysql_real_escape_string

(PHP 4 CVS only)

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().

> 注意 mysql_real_escape_string() does not escape `%` and `_`.

例 1mysql_real_escape_string() example

    <?php
    $link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
    $item = "Zak's and Derick's Laptop";
    $escaped_item = mysql_real_escape_string($item);
    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(), mysql_character_set_name().

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