<?php
    $en_dir = mcrypt_list_algorithms();    //返回Mcrypt支持的加密算法数组
    echo "Mcrypt支持的算法有：";
    foreach($en_dir as $en_value){
        echo $en_value."<br />";
}
?>
<?php
    $mo_dir = mcrypt_list_modes();    //返回Mcrypt支持的加密模式数组
    echo "<p>Mcrypt支持的加密模式有：";
    foreach($mo_dir as $mo_value){
        echo $mo_value."<br />";
}
?>