php - 表单提交后显示 $_FILES ['image' ]

Question

提交表单后如何显示上传的图片？提交表单后，它将是一个预览页面，因此我不会在 MySQL 中存储图像类型 BLOB。我如何显示 $_FILES['image']？

<?php

if(isset($_POST['submit'])) {

 //preview page

$info = getimagesize($_FILES['image']['tmp_name']);
$imagetype = $info['mime'];
$tmpname = $_FILES['image']['tmp_name'];
$fp = fopen($tmpname,'r');
$data = fread($fp,filesize($tmpname));
$data = addslashes($data);
fclose($fp);

} else {
?>

<form enctype="multipart/form-data" action="http://www.example.com/submit" method="POST">
<input type="file" name="image" value="" size="50" />
<input type="submit" name="submit" value="submit" />
</form>

<?php
}

?>

Answer 1

如果您不想将图像存储在服务器上，您可以像这样预览:

<?php
if (isset($_FILES['image'])) {
    $aExtraInfo = getimagesize($_FILES['image']['tmp_name']);
    $sImage = "data:" . $aExtraInfo["mime"] . ";base64," . base64_encode(file_get_contents($_FILES['image']['tmp_name']));
    echo '<p>The image has been uploaded successfully</p><p>Preview:</p><img src="' . $sImage . '" alt="Your Image" />;
}

但是如果你想把它存储在服务器上，只需存储它并显示它，而无需更改页面。