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run code in 300+ PHP versions simultaneously
<?php $old = <<<'NOWDOC' <?php // Connect $link = mysql_connect('mysql_host', 'mysql_user', 'mysql_password') OR die(mysql_error()); // Query $query = sprintf("SELECT * FROM users WHERE user='%s' AND password='%s'", mysql_real_escape_string($user), mysql_real_escape_string($password)); ?> NOWDOC; echo preg_replace('/mysql_([a-zA-Z_]+)\(/', 'mysqli_$1($GLOBALS[\'link\'], ', $old);

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