dump() 把數組以數組格式數組，有益於調試
function dump($vars, $label = '', $return = false){
if (ini_get('html_errors')) {
$content = "<pre>/n";
if ($label != '') {
$content .= "<strong>{$label} :</strong>/n";
}
$content .= htmlspecialchars(print_r($vars, true));
$content .= "/n</pre>/n";
} else {
$content = $label . " :/n" . print_r($vars, true);
}
if ($return) { return $content; }
echo $content;
return null;
}
array_remove_empty()去除數組中爲空的元素
function array_remove_empty(& $arr, $trim = true){
foreach ($arr as $key => $value) {
if (is_array($value)) {
array_remove_empty($arr[$key]);
} else {
$value = trim($value);
if ($value == '') {
unset($arr[$key]);
} elseif ($trim) {
$arr[$key] = $value;
}
}
}
}