在上传图片php之前获取图片大小 [英] get image size before upload image php

问题描述

我想知道mb中的图像大小，但在ulpload做同样的事情之前。
我有：

  $ errors = array（）; 
 $ image = $ _FILES ['image'] ['name']; 
 $ file_tmp = $ _FILES ['image'] ['tmp_name']; 
 $ image_type = $ _FILES ['image'] ['type']; 
 $ descricao = $ _POST ['descricao']; 
 
 if（empty（$ image）|| $ _FILES ['image'] ['size']> = 1000）
 {
 $ _SESSION ['alert_type'] = -1; 
 $ _SESSION ['msg_alert'] =imagem did not upload！; 
} 
 
其他
 {
 //上传
} 
  

问题是知道文件大小，$ _FILES ['image'] ['size']不能正常工作。
谢谢

解决方案

  $ file_tmp = $ _FILES ['image'] ['tmp_name']; 
 $ size = filesize（$ file_tmp）; 
  

但是您是否意识到您希望图像在代码示例中小于千字节？ / p>

I want to know the image size in mb but before ulpload do the same. I have:

$errors =       array();
$image =        $_FILES['image']['name'];
$file_tmp =     $_FILES['image']['tmp_name'];
$image_type =   $_FILES['image']['type'];
$descricao =    $_POST['descricao'];

if(empty($image) || $_FILES['image']['size'] >= 1000)
{
    $_SESSION['alert_type'] = -1;
    $_SESSION['msg_alert'] = "imagem didnt upload!";
}

else
{
 //upload
}

The problem is to know the file size, the $ _FILES ['image'] ['size'] is not working well. thanks

解决方案

Before upload you can check like so:

$file_tmp = $_FILES['image']['tmp_name'];
$size = filesize($file_tmp);

But do you realize you are expecting the image to be less than a kilobyte in your code example?

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