“attach” 在 PHP 中通常與文件操作相關(guān),可能是指將一個(gè)文件附加到另一個(gè)文件末尾。如果你是在談?wù)?PHP 的文件上傳功能,那么你可能想要使用 move_uploaded_file()
函數(shù)來(lái)處理上傳的文件。這個(gè)函數(shù)可以將上傳的文件移動(dòng)到指定的目標(biāo)目錄。
如果你遇到了關(guān)于 PHP 文件上傳的問(wèn)題,比如文件無(wú)法上傳、文件大小限制、文件類型限制等,你可以檢查以下幾點(diǎn):
enctype="multipart/form-data"
屬性,這樣才能上傳文件。<form action="upload.php" method="post" enctype="multipart/form-data">
Select file to upload:
<input type="file" name="fileToUpload" id="fileToUpload">
<input type="submit" value="Upload File" name="submit">
</form>
if (isset($_FILES['fileToUpload'])) {
$target_file = "uploads/" . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file, PATHINFO_EXTENSION));
// Check if file already exists
if (file_exists($target_file)) {
echo "Sorry, file already exists.";
$uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
} else {
// Check if $_FILES["fileToUpload"]["error"] is equal to UPLOAD_ERR_OK
if ($_FILES["fileToUpload"]["error"] == UPLOAD_ERR_OK) {
// Generate a unique file name to avoid conflicts
$imageFileName = uniqid("", true) . "." . $imageFileType;
$target_file = "uploads/" . $imageFileName;
// Move uploaded file to the target location
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
echo "The file " . htmlspecialchars(basename($_FILES["fileToUpload"]["name"])) . " has been uploaded.";
} else {
echo "Sorry, there was an error uploading your file.";
}
} else {
echo "Sorry, there was an error uploading your file. Error code: " . $_FILES["fileToUpload"]["error"];
}
}
}
確保你的 PHP 配置文件(php.ini)中的 upload_max_filesize
和 post_max_size
設(shè)置足夠大,以允許上傳大文件。
如果你需要處理多個(gè)文件上傳,確保你的 HTML 表單和 PHP 腳本都支持多個(gè)文件。
檢查服務(wù)器是否有足夠的權(quán)限來(lái)創(chuàng)建和寫入目標(biāo)目錄。
如果你遇到的問(wèn)題不在上述列表中,請(qǐng)?zhí)峁└唧w的信息,以便我能提供更準(zhǔn)確的幫助。