php image validation with zip validation - php

Question

I am creating PHP image validation and zip file validation scripts my zip file validation script is working but I have added image validation but it's not working I want to add image file type jpeg,png file type I have tried to do that's not working
Here is my code
if($_FILES['fileImage']['tmp_name'][0] != "fileImage/jpg") {
die($_FILES['fileImage']['name'][0] . " is not a valid image file.");
exit;
}
$z = zip_open($_FILES['fileImage']['tmp_name'][4]);
if (!is_resource($z)) {
die($_FILES['fileImage']['name'][4] . " is not a valid ZIP file.");
}
zip_close($z);

Answer 1

I would first check the temp file with mime_content_type. The result does not depend on the file extension, which would be easy to manipulate. Further processing could then complete the validation.
$tmpFile = $_FILES['fileImage']['tmp_name'];
switch ($mimeType = mime_content_type($tmpFile)) {
case 'application/zip':
//... process zip ... zip_open, etc
break;
case 'image/jpeg':
//... process image ... getimagesize etc.
break;
default:
die('Unknown filetype "' . $mimeType . '".');
}

Answer 2

Try the following code.
$tempFile = $_FILES['file']['name'];
// Get the file extension
$fileExt = pathinfo($tempFile, PATHINFO_EXTENSION);
// Allowed extensions
$imageExt = ['jpg', 'png', 'gif'];
$compressExt = ['rar', 'zip'];
// Validation
if ( !in_array($fileExt, $imageExt) ) {
die('Not image format');
} elseif ( !in_array($fileExt, $compressExt) ) {
die('No compression format');
} else {
// proceed
}