jQuery PHP图片批量上传代码

<?php if(empty($_FILES)) die(json_encode(array('code'=>-1,'msg'=>'error'))); $file = $_FILES['file']; if($file['error']!=0 || $file['size']< 1 ){ die(json_encode(array('code'=>-1,'msg'=>'error','id'=>$_POST['id']))); } move_uploaded_file( $file['tmp_name'], "./upload/".$file['name']); $file_db = "./upload/db.txt"; $db = array(); $rows = array(); if( file_exists($file_db) ){ $db = file($file_db); foreach($db as $row){ $row = trim($row); if(!empty($row)){ $row = explode("\t",$row); $rows[$row[0]] = $row[1]; } } } $rows[$file['name']] = $_POST['sort']; $write_db = array(); foreach($rows as $key=>$val){ $write_db[] = trim($key."\t".$val); } $content = implode("\n",$write_db); file_put_contents($file_db, $content); echo json_encode( array( 'code'=>0, 'msg'=>'ok', 'id'=>$_POST['id'] ) );