php post file -优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_20379/article/details/81919147

本文通过一个具体的PHP脚本示例介绍了如何实现文件上传功能，包括表单提交、错误处理及文件保存等关键步骤，并使用cURL模拟了文件上传的过程。

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<html>
<body>

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

</body>
</html>

<?php
if ($_FILES["file"]["error"] > 0)
  {
  echo "Error: " . $_FILES["file"]["error"] . "<br />";
  }
else
  {
  echo "Upload: " . $_FILES["file"]["name"] . "<br />";
    echo "Type: " . $_FILES["file"]["type"] . "<br />";
    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";

    if (file_exists("upload/" . $_FILES["file"]["name"]))
	{
	echo $_FILES["file"]["name"] . " already exists. ";
	}
    else
	{
	move_uploaded_file($_FILES["file"]["tmp_name"],
	"upload/" . $_FILES["file"]["name"]);
	echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
	}
  }
?>

<?php

$postData = array();

//simulates <input type="file" name="file_name"> http://localhost/test/upload/
$postData['file'] = "@up.html.bak";
$postData['submit'] = "UPLOAD";
$url = "http://127.0.0.1/test/upload/up.php";
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url );
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_POST, 1 );

//seems no need to tell it enctype='multipart/data' it already knows
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData );

$response = curl_exec( $ch );

if(curl_errno($ch))
{
    echo 'Curl error: ' . curl_error($ch);
} else {
    echo '<span style="color:#c92222">'.$response.'</span>';
} 

?>