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// Declare the target directory for uploaded files
$target_dir = "uploads/";
// Initialize an empty array for allowed file types
$allowedTypes = ['jpg', 'png'];
// Check if the form has been submitted
if (isset($_POST['submit'])) {
// Retrieve the file details
$target_file = $target_dir . basename($_FILES['fileToUpload']['name']);
$file_type = strtolower(pathinfo($target_file, PATHINFO_EXTENSION));
// Validate the file type
if (!in_array($file_type, $allowedTypes)) {
echo "Invalid file type. Only JPG and PNG files are allowed.";
}
// Check if the file already exists
elseif (file_exists($target_file)) {
echo "File already exists. Please choose a different file.";
}
// Check file size (assumes a 5MB limit)
elseif ($_FILES['fileToUpload']['size'] > 5000000) {
echo "File is too large. Maximum file size is 5MB.";
}
else {
// Attempt to move the file to the target directory
if (move_uploaded_file($_FILES['fileToUpload']['tmp_name'], $target_file)) {
echo "File uploaded successfully!";
} else {
echo "File upload failed. Please try again.";
}
}
}
?>
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PHP ?? ??? ???????
Jul 17, 2025 am 04:16 AM
PHP ?? ??? ?? ???? ?? ? ????? ??? ?????. 1. ?? ??? ??? ??? ??? ? ? ??? ??? ??? ?? ?? ??? ???? ???????. 2. ?? ??? ???? ???? ? ?? ????? ?? ?? ?? ??? ?????. 3. $ _get ? $ _post? ?? Hyperglobal ??? ?? ???? ?? ??? ? ??? ??? ??????? ???????. 4. ?? ?? ?? ???? ?? ?? ?? ??? ?????? ?? ??? ??? ?? ??? ???????. ??? ??? ????? ??? ??? ?? ???? ????? ? ??? ? ? ????.
PHP?? ?? ???? ???? ???? ??? ??????
Jul 08, 2025 am 02:37 AM
PHP ?? ???? ???? ????? ?? ? ??? ???? ?? ?? ? ??? ???? ?? ??? ?????? ??? ??? ? ? ???????. 1. ??? ?? CSRF? ???? ?? ??? ??? ???? ?????? ??? ???? FINFO_FILE? ?? ?? MIME ??? ?????. 2. ??? ??? ??? ???? ??? ?? ??? ?? ? WEB ????? ??? ???? ??????. 3. PHP ?? ??? ?? ? ?? ???? NGINX/APACHE? ??? ????? ?? ???? ?????. 4. GD ?????? ??? ? ?? ???? ??? ?? ??? ?? ????.
PHP?? ?? ??
Jul 18, 2025 am 04:57 AM
PHP ?? ???? ? ?? ???? ??? ????. 1. // ?? #? ???? ? ?? ??? ???? // ???? ?? ????. 2. ?? /.../ ?? ?? ?? ??? ????? ?? ? ?? ??? ?? ? ? ????. 3. ?? ?? ?? / if () {} /? ?? ?? ??? ????? ??? ?? ?? ?? ??? ???? ????? ???? ??? ?? ???? ???? ??? ? ??? ??????.
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Jul 11, 2025 am 03:12 AM
Ageneratorinphpisamemory- ???? Way-Erate-Overgedatasetsetsbaluesoneatimeatimeatimeatimallatonce.1.generatorsuseTheyieldKeywordTocroadtOpvaluesondemand, RetingMemoryUsage.2
PHP ?? ?? ?
Jul 18, 2025 am 04:51 AM
PHP ??? ???? ??? ??? ??? ????? ????. ??? ????? ?? ???? ??? "?? ? ?"??? "?"? ???????. 1. ??? ? ??? ??? DocBlock (/*/)? ?? ?? ??? ???? ??? ? ?? ???? ??????. 2. JS ??? ???? ?? ???? ??? ?? ??? ??? ?????. 3. ??? ?? ?? ?? ??? ???? ????? ????? ???? ?? ????? ???? ? ??????. 4. Todo ? Fixme? ????? ???? ? ? ??? ??? ???? ?? ?? ? ??? ???????. ??? ???? ?? ??? ??? ?? ?? ?? ???? ???? ? ????.
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Jul 18, 2025 am 04:52 AM
toinstallphpquickly, usexampponwindowsorhomebrewonmacos.1. ??, downloadandinstallxAmpp, selectComponents, startApache ? placefilesinhtdocs.2
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Jul 18, 2025 am 04:54 AM
tolearnpheffectical, startBysetTupaloCalserErverEnmentUsingToolslikexamppandacodeeditor -likevscode.1) installxamppforapache, mysql, andphp.2) useacodeeditorforsyntaxsupport.3)) 3) testimplephpfile.next, withpluclucincludechlucincluclucludechluclucled
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Jul 12, 2025 am 03:15 AM
PHP??? ???? ??? ?? ?? ????? ???? ??? ?? ??? ??? ?? ? ??? ??? ???? ?????. ???? 0?? ???? ?? ??? ???? ? ?? ???? ?? ?? ? ? ????. MB_SUBSTR? ?? ??? ??? ???????. ? : $ str = "hello"; echo $ str [0]; ?? H; ??? MB_SUBSTR ($ str, 1,1)? ?? ??? ??? ??? ??????. ?? ???????? ???? ??? ???? ?? ???? ?? ?? ???? ?????? ??? ????? ?? ??? ?? ??? ???? ???? ?? ????.
