PHP POST(我在这个网站上看到了所有的POST问题，但它们并没有帮助) - PHP POST (i've seen all of post problems on dis site but they didn't helped)

PHP POST (i've seen all of post problems on dis site but they didn't helped)

本文关键字：POST 问题有帮助网站 PHP | 更新日期: 2023-09-27

嗨，伙计们，我在php中遇到了POST问题，你知道，所以，是的，数据代码

<form action="index.php?upload=true" method="post">
    <input type="file" name="photo" id="photo" value="upload image">
    <input type="submit" name="upload" value="DO IT"/>
</form>
<?php
if (isset($_GET['upload'])) {
    runMyFunction();
}
function runMyFunction(){
    $uploaded=$_POST['photo'];
    list($width, $height) = getimagesize($uploaded);
    echo "width: " . $width . "<br />";
    echo "height: " .  $height;
}
?>

所以我的问题是:当我按下上传按钮，我得到错误:http://postimg.org/image/h39bvyt8j/(我不能上传图片，我没有声誉)是的，我所需要的是:当我按下上传按钮时，图像比例必须写入，如你在图片底部看到的，例如:我上传图像，按下上传，它写:宽度:100px高度:150px谢谢你的帮助!(我认为有一些Post方法)

上传文件时必须定义enctype="multipart/form-data"为:

<form action="index.php?upload=true" method="post" enctype="multipart/form-data">
    <input type="file" name="photo" id="photo" value="upload image">
    <input type="submit" name="upload" value="DO IT"/>
</form>

文档在这里

应该使用$_FILES['photo']而不是$_POST['photo']，这意味着您还需要将enctype="multipart/form-data"添加到form元素。

点击这里阅读更多

你必须添加

  enctype="multipart/form-data"

，并将动作留空。之后，添加以下代码

  if (isset($_POST['upload'])) {
 runMyFunction();
 }
 function runMyFunction(){
 $uploaded=$_FILES['photo']['name'];
 move_uploaded_file($_FILES['photo']['tmp_name'], $uploaded);
 list($width, $height) = getimagesize($uploaded);
 echo "width: " . $width . "<br />";
 echo "height: " .  $height;
 }

变化

if(isset($_GET['upload']))

if(isset($_POST['uploaded']))

也

$uploaded=$_POST['photo'];

 $uploaded = $_FILES['photo'];

1)将action = ""保留为空，因为代码存在于同一文件中。

2)在表单标签中添加enctype="multipart/form-data"属性。

3)用$_FILES[];代替$_POST[];

4)在['photo']后面添加['name']

和Tadah !现在应该可以运行了:

<form action="" method="post" enctype="multipart/form-data">
<input type="file" name="photo" id="photo" value="upload image">
<input type="submit" name="upload" value="DO IT"/>
</form>
<?php
if (isset($_POST['upload'])) {
runMyFunction();
}
function runMyFunction(){
$uploaded=$_FILES['photo']['name'];
list($width, $height) = getimagesize("path/to/images/image.jpg");
echo "width: " . $width . "<br />";
echo "height: " .  $height;
}
?>