PHP+ajax图片上传的简单实现

<?php $typeArr = array("jpg", "png", "gif","ico"); //允许上传文件格式 $path = "uploads/"; //上传路径 //if (!file_exists($path)) { // mkdir($path); //} if (isset($_POST)) { $name = $_FILES['file']['name']; $size = $_FILES['file']['size']; $name_tmp = $_FILES['file']['tmp_name']; if (empty($name)) { echo json_encode(array("error" => "您还未选择图片")); exit ; } $type = strtolower(substr(strrchr($name, '.'), 1)); //获取文件类型 if (!in_array($type, $typeArr)) { echo json_encode(array("error" => "清上传jpg,png或gif类型的图片！")); exit ; } if ($size > (500 * 1024)) { echo json_encode(array("error" => "图片大小已超过500KB！")); exit ; } $pic_name = time() . rand(10000, 99999) . "." . $type; //图片名称 $pic_url = $path . $name; // $pic_url = $path . $pic_name; //上传后图片路径+名称 if (move_uploaded_file($name_tmp, $pic_url)) {//临时文件转移到目标文件夹 echo json_encode(array("error" => "0", "pic" => $pic_url, "name" => $pic_name)); } else { echo json_encode(array("error" => "上传有误，清检查服务器配置！")); } } ?>