php保存base64数据

php保存base64数据if(isset($param['cover_pic']) && !empty($param['cover_pic'])) {
 if (preg_match('/^(data:\s*image\/(\w+);base64,)/', $param['cover_pic'], $result)){
 $file_path = '/upload/project/' . $param['id'] . date('YmdHis') . '.' . $result[2];
 if (file_put_contents('.' . $file_path, base64_decode(str_replace($result[1], '', $param['cover_pic'])))){
 $param['cover_pic'] = $file_path;
 }
 }
}js闭包
var title = 'blog';
(function(title){
$.post(url, {}, function(data){
alert(title);//output single's blog, 我们期望的是输出 blog
})
}(title))
title = "single's blog";
(function(title){
$.post(url, {}, function(data){
alert(title);//output single's blog
})
}(title))
for(var i=0;i<3;i++)
{
((function(i){
$.get('/?'+i, {}, function(data){
alert(i); // alert(1) alert(2) alert(3)
})
}(i))
}