h5ai/src/_h5ai/server/php/inc/util.php

<?php

function json_exit($obj) {

	$obj["code"] = 0;
	echo json_encode($obj);
	exit;
}

function json_fail($code, $msg = "", $cond = true) {

	if ($cond) {
		echo json_encode(array("code" => $code, "msg" => $msg));
		exit;
	}
}

function use_request_params($keys) {

	if (!is_array($keys)) {
		$keys = func_get_args();
	}

	$values = array();
	foreach ($keys as $key) {
		json_fail(101, "parameter '$key' is missing", !array_key_exists($key, $_REQUEST));
		$values[] = $_REQUEST[$key];
		unset($_REQUEST[$key]);
	}
	return $values;
}

function delete_tempfile($file) {

	@unlink($file);
}

function starts_with($sequence, $head) {

	return substr($sequence, 0, strlen($head)) === $head;
}

function ends_with($sequence, $tail) {

	return substr($sequence, -strlen($tail)) === $tail;
}

function load_commented_json($file) {

	if (!file_exists($file)) {
		return array();
	}

	$str = file_get_contents($file);

	// remove comments to get pure json
	$str = preg_replace("/\/\*.*?\*\/|\/\/.*?(\n|$)/s", "", $str);

	return json_decode($str, true);
}

function merge_config($a, $b) {

	$result = array_merge(array(), $a);

	foreach ($b as $key => $value) {
		$result[$key] = array_merge($result[$key], $b[$key]);
	}

	return $result;
}

?>