base64图片上传


DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>简单的html5 File测试 for pic2base64title> 
<style> 
style> 
<script> 
  window.onload = function(){ 
    var input = document.getElementById("demo_input"); 
    var result= document.getElementById("result"); 
    var img_area = document.getElementById("img_area"); 
    if ( typeof(FileReader) === 'undefined' ){
      result.innerHTML = "抱歉,你的浏览器不支持 FileReader,请使用现代浏览器操作!"; 
      input.setAttribute('disabled','disabled'); 
    }else{
      input.addEventListener('change',readFile,false);
    } 
  }
  function readFile(){
    var file = this.files[0]; 
    //这里我们判断下类型如果不是图片就返回 去掉就可以上传任意文件  
    if(!/image\/\w+/.test(file.type)){
      alert("请确保文件为图像类型"); 
      return false; 
    }
    var reader = new FileReader(); 
    reader.readAsDataURL(file); 
    console.log();
    reader.onload = function(e){ 
        result.innerHTML = this.result; 
        img_area.innerHTML = '
图片img标签展示:
![](
'+this.result+')'; } } script> head> <body> <form action="file.php" method="post"> <input type="file" value="sdgsdg" id="demo_input" /> <textarea name="img" id="result" rows=30 cols=300>textarea> <p id="img_area">p> <input type="submit" value="提交"> form> body> html>
<?php
/**
 * base64图片上传
 * @param $base64_img
 * @return array
 */
$base64_img = trim($_POST['img']);
$up_dir = './upload/';//存放在当前目录的upload文件夹下

if(!file_exists($up_dir)){
  mkdir($up_dir,0777);
}

if(preg_match('/^(data:\s*image\/(\w+);base64,)/', $base64_img, $result)){
  $type = $result[2];
  if(in_array($type,array('pjpeg','jpeg','jpg','gif','bmp','png'))){
    $new_file = $up_dir.date('YmdHis_').'.'.$type;
    if(file_put_contents($new_file, base64_decode(str_replace($result[1], '', $base64_img)))){
      $img_path = str_replace('../../..', '', $new_file);
      echo '图片上传成功
![](' .$img_path. ')'; }else{ echo '图片上传失败
'; } }else{ //文件类型错误 echo '图片上传类型错误'; } }else{ //文件错误 echo '文件错误'; }
PHP