用的是CI框架
后端代码:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | <?php class Upload extends MY_Controller { function __construct() { parent::__construct(); $this ->load->helper( array ( 'form' , 'url' )); } function index() { $data = array (); $data [ 'upload_url' ] = site_url( 'upload/ajax_upload' ); $this ->load->view( 'upload' , $data ); } function do_upload() { $config [ 'upload_path' ] = './uploads/' ; $config [ 'allowed_types' ] = 'gif|jpg|png' ; $config [ 'max_size' ] = '1024' ; $config [ 'max_width' ] = '1024' ; $config [ 'max_height' ] = '768' ; $this ->load->library( 'upload' , $config ); if (! $this ->upload->do_upload( 'AidImg' )) { echo ( "<script>parent.callback('" . $this ->upload->display_errors() . "',false)</script>" ); exit ; } else { $data = array ( 'upload_data' => $this ->upload->data()); $img_path = base_url() . 'uploads/' ; echo "<script>parent.callback('" . $data ['upload_data '][' file_name '] . "' ,true, '" . $img_path . "' )</script>"; exit ; } } } ?> |
前端代码:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | < html > < head > < title >Upload Form</ title > < script type = "text/javascript" src="<?php echo base_url() ?>access/js/jquery-1.8.0.min.js"></ script > </ head > < body > < form id = "formImg" action = "do_upload" method = "post" target = "hidden_frame" enctype = "multipart/form-data" > < div > < input type = "hidden" name = "sh_id" id = "sh_id" value = "{$id}" > <!--这里的{$id}大家可以随便填1个进去--> < input id = "AidImg" type = "file" name = "AidImg" onchange = "uploadImg()" /> < div style = "display:none;" id = "imgError" >图片不可为空</ div > < iframe style = "display:none" name = 'hidden_frame' id = "hidden_frame" ></ iframe > < div >< img id = "p_img" src = "" width = "80" height = "80" /> </ div > < span class = "help_inline" >尺寸:80*80</ span > </ div > </ form > </ body > </ html > < script > function uploadImg() { var names = $("#AidImg").val().split("."); if (names[1] != "gif" && names[1] != "GIF" && names[1] != "jpg" && names[1] != "JPG" && names[1] != "png" && names[1] != "PNG") { $("#imgError").html("< span >" + "图片必须为gif,jpg,png格式" + "</ span >"); $("#formImg .help-inline").hide(); $("#imgError").show(); return; } $("#formImg").submit(); $("#imgError").show(); $("#imgError").html("图片上传中ing"); } function callback(message, success, path) { if (success == false) { $("#imgError").html("< span >" + message + "</ span >"); $("#imgError").show(); } else { $("#imgError").hide(); $(".fromtrs").show(); $("#formImg .help-inline").hide(); var paths = path; $("#p_img").attr("src", path + message); $("#p_img").attr("imgname", message); //这里由于数据库里只存入图片名称加后缀名,故和路径拆开了 } } </ script > |