dump() 把数组以数组格式数组，有益于调试 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()去除数组中为空的元素 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; } } } } array_chunk() php默认函数 作用是把函数平均分组