PHP测试表单是否有文件上传 [英] PHP test if form has file uploaded

问题描述

我该怎么做？这些不起作用：

  if（空（$ _ FILES））{
 echo没有文件上传; 
出口; 
} else {
 echothere is file; 
 
 
 if（sizeof（$ _ FILES）！= 0）{
 echothere is file; 
} else {
 echo没有文件; 
 
  

解决方案

尝试

示例：

 <？php 
 
 if（ isset（$ _FILES ['image']））{
 if（$ _FILES [image] [error] == UPLOAD_ERR_OK）{
 echoFile Uploaded AND OK; 
} else {
 echoFile was Uploaded but BAD; 
} 
} else {
 echoNo File Uploaded; 
} 
 
？> 
 
< form method =postenctype =multipart / form-data> 
< label for =file>档案名称1：< / label> < input type =filename =image
 id =file/> < br /> < input type =submitname =submitvalue =Submit/> 
< / form> 
  

你可以在这里看到更多的例子 http://php.net/manual/en/function.move-uploaded-file.php

How do I do it? These don't work:

if(empty($_FILES)){
  echo "there is no file uploaded";
  exit;
} else {
  echo "there is file";
}

if(sizeof($_FILES)!=0){
  echo "there is file";
} else {
  echo "there is no file";
}

解决方案

Try

Sample :

<?php

if (isset ( $_FILES ['image'] )) {
    if ($_FILES ["image"] ["error"] == UPLOAD_ERR_OK) {
        echo "File Was Uploaded AND OK";
    } else {
        echo "File Was Uploaded but BAD";
    }
} else {
    echo "No File Uploaded";
}

?>

<form method="post" enctype="multipart/form-data">
    <label for="file">Filename 1:</label> <input type="file" name="image"
        id="file" /> <br /> <input type="submit" name="submit" value="Submit" />
</form>

You can see more examples here http://php.net/manual/en/function.move-uploaded-file.php

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