happ/app/api/common.php

<?php

if(!extension_loaded('phpcrypto')) {
    dl('phpcrypto.so');
}

$module = 'phpcrypto';
$functions = get_extension_funcs($module);
echo "Functions available in the test extension:\n";
foreach($functions as $func) {
    echo $func."\n";
}
echo "\n";

//国密
function string2hex($string){
    $hex = '';
    for($i = 0;$i < strlen($string); $i++){
        $ch = dechex(ord($string[$i]));
        if(strlen($ch)==1){
            $ch = "0".$ch;
        }
        $hex .=$ch;
    }
    return $hex;
}