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How to accept image extension from url in php?

Accept image extension from url in php



<?php
 $file_name = 'http://localhost/brrrr/wp-content/uploads/2019/11/New-Business-card-4.jpg';
echo $file_name."<br>";
$allowed = array('gif', 'png', 'jpg');
$ext = pathinfo($file_name, PATHINFO_EXTENSION);
if (!in_array($ext, $allowed)) {
    echo 'error';
}
else{
echo "this is ok";
}
 

?>

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