php图片上传素材

$allowedTypes = ['image/jpeg', 'image/png', 'image/gif'];
if (!in_array($_FILES['file']['type'], $allowedTypes)) {
    die('Invalid file type.');
}

if ($_FILES['file']['size'] > 5000000) { // 5MB
    die('File size is too large.');
}

$fileName = $_FILES['file']['name'];
$uniqueFileName = uniqid() . '_' . $fileName;
move_uploaded_file($_FILES['file']['tmp_name'], 'uploads/' . $uniqueFileName);

$image = imagecreatefromjpeg($_FILES['file']['tmp_name']);
if ($image === false) {
    die('Invalid image file.');
}
imagedestroy($image);

<?php
$targetDir = 'uploads/';
$fileName = basename($_FILES['file']['name']);
$targetFile = $targetDir . $fileName;

$allowedTypes = ['image/jpeg', 'image/png', 'image/gif'];
$maxFileSize = 5000000; // 5MB

if (!in_array($_FILES['file']['type'], $allowedTypes)) {
    die('Invalid file type.');
}

if ($_FILES['file']['size'] > $maxFileSize) {
    die('File size is too large.');
}

$image = imagecreatefromjpeg($_FILES['file']['tmp_name']);
if ($image === false) {
    die('Invalid image file.');
}
imagedestroy($image);

if (move_uploaded_file($_FILES['file']['tmp_name'], $targetFile)) {
    echo 'File uploaded successfully.';
} else {
    echo 'Failed to upload file.';
}
?>