Loading ANY Content Through PHP Script - php

Question

I have this script:
<?php
$id = $_GET["id"];
switch($id)
{
default: echo "Bad ID!"; exit;
case "MyPicture1": $file = "img/img1.jpg"; break;
case "MyPicture2": $file = "img/img2.jpg"; break;
case "MyPicture3": $file = "img/img3.jpg"; break;
case "MyPicture4": $file = "img/img4.jpg"; break;
}
if(file_exists($file))
{
$size = getimagesize($file);
$fp = fopen($file, 'rb');
if($size and $fp)
{
header('Last-Modified: '.gmdate('D, d M Y H:i:s', filemtime($file)).' GMT');
header('Content-Type: '.$size['mime']);
header('Content-Length: '.filesize($file));
fpassthru($fp);
}
exit;
}
else
{
echo "Bad ID!";
}
?>
Which works fine for loading images like this <IMG Src="/Script.php?id=MyPicture1" />!
But the problem occurs when I try to load ANY other MIME content, to be displayed directly on the page or to switch page with it, but unsuccessfully... I tried with:
<?php
$file_name = $_GET["id"];
switch($file_name)
{
default: echo 'Bad ID!'; exit;
case "style1": $file_name = "csss/style_one.css"; break;
case "style2": $file_name = "csss/style_two.css"; break;
case "image1": $file_name = "images/image_one.jpg"; break;
case "image2": $file_name = "images/image_one.png"; break;
case "image3": $file_name = "images/image_one.bmp"; break;
case "image4": $file_name = "images/image_one.gif"; break;
case "video1": $file_name = "videos/video_one.avi"; break;
case "video2": $file_name = "videos/video_two.mp4"; break;
case "video3": $file_name = "videos/video_three.mov"; break;
case "php_page_1": $file_name = "php_pages/php_one.php"; break;
case "html_page_1": $file_name = "html_pages/html_one.html"; break;
case "icon_fav_1": $file_name = "icons/icon_one.ico"; break;
case "font_1": $file_name = "fonts/font_one.otf"; break;
}
if(file_exists($file_name))
{
$size = getImageSize("$file_name");
$fP = fOpen("$file_name", "rb");
if($size and $fP)
{
header('last-modified: '.gmdate('D, d M Y H:i:s', filemtime($file_name)).' GMT');
header('content-type: '.$size['mime'].');
header('content-length: '.filesize($file_name).);
fPassThru($fP);
}
exit;
}
else
{
echo 'Bad ID!';
}
?>
If I load CSS sheet like /Script.php?id=MyCSS1, I want CSS file to be loaded properly on the page - that is I want CSS file to be loaded on the page as if it was loaded with <LINK rel="stylesheet" type="text/css" href="css/styles_one.css" />. The same applies to ANY and ALL other MIME content, including switching pages with ANY extension with it - like /Script.php?id=php_page_1 (if php page 1 is clicked).
Can you help?

Answer 1

You can use the php function mime_content_type. Here is an example with some syntactic sugar.
<?php
$file_name = $_GET["id"];
switch($file_name)
{
default: echo 'Bad ID!'; exit;
case "style1": $file_name = "csss/style_one.css"; break;
case "style2": $file_name = "csss/style_two.css"; break;
case "image1": $file_name = "images/image_one.jpg"; break;
case "image2": $file_name = "images/image_one.png"; break;
case "image3": $file_name = "images/image_one.bmp"; break;
case "image4": $file_name = "images/image_one.gif"; break;
case "video1": $file_name = "videos/video_one.avi"; break;
case "video2": $file_name = "videos/video_two.mp4"; break;
case "video3": $file_name = "videos/video_three.mov"; break;
case "php_page_1": $file_name = "php_pages/php_one.php"; break;
case "html_page_1": $file_name = "html_pages/html_one.html"; break;
case "icon_fav_1": $file_name = "icons/icon_one.ico"; break;
case "font_1": $file_name = "fonts/font_one.otf"; break;
}
if(file_exists($file_name)) {
header("last-modified: {gmdate('D, d M Y H:i:s', filemtime($file_name))} GMT");
header("content-type: {mime_content_type($file_name)}");
header("content-length: {filesize($file_name)}");
readfile($file_name);
} else {
echo 'Bad ID!';
}
exit;
If you are using php 8. You will have to write it like this.
<?php
$file_name = $_GET["id"];
switch($file_name)
{
default: echo 'Bad ID!'; exit;
case "style1": $file_name = "csss/style_one.css"; break;
case "style2": $file_name = "csss/style_two.css"; break;
case "image1": $file_name = "images/image_one.jpg"; break;
case "image2": $file_name = "images/image_one.png"; break;
case "image3": $file_name = "images/image_one.bmp"; break;
case "image4": $file_name = "images/image_one.gif"; break;
case "video1": $file_name = "videos/video_one.avi"; break;
case "video2": $file_name = "videos/video_two.mp4"; break;
case "video3": $file_name = "videos/video_three.mov"; break;
case "php_page_1": $file_name = "php_pages/php_one.php"; break;
case "html_page_1": $file_name = "html_pages/html_one.html"; break;
case "icon_fav_1": $file_name = "icons/icon_one.ico"; break;
case "font_1": $file_name = "fonts/font_one.otf"; break;
}
if(file_exists($file_name)) {
$last_modified = gmdate('D, d M Y H:i:s', filemtime($file_name));
header("last-modified: $last_modified GMT");
$content_type = mime_content_type($file_name);
header("content-type: $content_type");
$content_length = filesize($file_name);
header("content-length: $content_length");
readfile($file_name);
} else {
echo 'Bad ID!';
}
exit;

Answer 2

getImageSize() is just for image files. The more general function for getting MIME types is mime_content_type().
if(file_exists($file_name))
{
$type = mime_content_type("$file_name");
$fP = fOpen("$file_name", "rb");
if($type and $fP)
{
header('last-modified: '.gmdate('D, d M Y H:i:s', filemtime($file_name)).' GMT');
header('content-type: '.$type.');
header('content-length: '.filesize($file_name).);
fPassThru($fP);
}
exit;
}
else
{
echo 'Bad ID!';
}