is_uploaded_file funksiyasi

is_uploaded_file funksiyasi ko'rsatilgan fayl POST so'rovi orqali yuklanganligini teksiradi. Bu fayllar bilan ishlashda muhim xavfsizlik tekshiruvidir. Funksiya bitta parametr qabul qiladi - tekshirilayotgan fayl yo'li va agar fayl POST orqali yuklangan bo'lsa true, aks holda false qaytaradi.

Sintaksis

is_uploaded_file(string $filename): bool

Misol

Fayl forma orqali yuklanganligini tekshiramiz:

<?php
	if (is_uploaded_file($_FILES['userfile']['tmp_name'])) {
		echo 'File was uploaded via HTTP POST';
	} else {
		echo 'File was NOT uploaded via HTTP POST';
	}
?>

Misol

Funksiyani move_uploaded_file bilan birgalikda ishlatish:

<?php
	$temp_file = $_FILES['userfile']['tmp_name'];
	$target_file = 'uploads/' . $_FILES['userfile']['name'];
	
	if (is_uploaded_file($temp_file)) {
		move_uploaded_file($temp_file, $target_file);
		echo 'file uploaded successfully';
	} else {
		echo 'possible file upload attack';
	}
?>

Shuningdek qarang

move_uploaded_file funksiyasi,
bu yuklangan faylni xavfsiz ko'chiradi
file_exists funksiyasi,
bu fayl mavjudligini teksiradi (lekin faqat yuklanganlarini emas)
tmpfile funksiyasi,
bu vaqtincha fayl yaratadi
is_file funksiyasi,
bu faylni teksiradi