HTML部分：
<div class="sc-img"></div><p><input type="file" class="file" id="img"></p>
javascript部份：
$(‘#img‘).change(function(){ ???????var img = event.target.files[0]; ?????????// 判断是否图片 ?????????if(!img){ ?????????????return ; ?????????} ?????????// 判断图片格式 ?????????if(!(img.type.indexOf(‘image‘)==0 && img.type && /\.(?:jpeg|jpg|png|gif)$/.test(img.name)) ){ ?????????????alert(‘图片只能是jpeg,jpg,gif,png‘); ?????????????return ; ?????????} ?????????var reader = new FileReader(); ?????????reader.readAsDataURL(img); ?????????reader.onload = function(e){ ???????????$.ajax({ ???????????????url: "scImg.php", ???????????????method: ‘POST‘, ???????????????data: { img:e.target.result}, ???????????????success: function(msg) {// ???????????????????alert(‘上传成功‘); ?????????????????????$(‘.sc-img‘).html(‘<img style=‘+‘height:100%;‘+‘ src="‘ + msg.img + ‘">‘); ?????????????????????console.log(‘src‘,msg.img); ???????????????},error:function(){ ????????????????????console.log(‘上传失败‘); ???????????????} ???????????}); ???????} ????});
php部分：scImg.php
<?php$path="uppic/";if(!file_exists($path)) { mkdir("$path", 0777); }$img = isset($_POST[‘img‘])? $_POST[‘img‘] : ‘‘; ???// 获取图片 ?list($type, $data) = explode(‘,‘, $img); ???// 判断类型 ?if(strstr($type,‘image/jpeg‘)!=‘‘){ ?????$ext = ‘.jpeg‘; ?}elseif(strstr($type,‘image/gif‘)!=‘‘){ ?????$ext = ‘.gif‘; ?}elseif(strstr($type,‘image/png‘)!=‘‘){ ?????$ext = ‘.png‘; ?}elseif(strstr($type,‘image/jpg‘)!=‘‘){ ?????$ext = ‘.jpg‘; ?}// 生成的文件名 ?$photo = time().$ext; ???// 生成文件 ?file_put_contents($path."/".$photo, base64_decode($data), true); ???// 返回 ?header(‘content-type:application/json;charset=utf-8‘); ?$ret = array(‘img‘=>$path.$photo); echo json_encode($ret); ??>
PHP上传图片
原文地址：http://www.cnblogs.com/beli/p/7462487.html