Delete a file (PHP+Javascript)

<?php
    
    if (file_exists($_GET['file'])) {
        chmod($_GET['file'], 0755);
        
        if (unlink($_GET['file'])) {
            echo "true";
        } else {
            echo "false";
        }
        
    } else {
        echo "false";   
    }
    
    echo '/deleteImage/';
?>

function deleteImage(file_path) {
  $.ajax({
    url: 'http://Your_LocalHost/deleteImage.php',
    data: {'file' : "/var/www/html/" + file_path },
    success: function (response) {
    },
    error: function () {
    }
  });
}