meta data from images php

exif.php

#!/usr/bin/php -q
<?php

/*
 * exif.php 
 * This script gets meta headers from image files.
 * 
 * (For use with command line)
 * Usage Usage: php exif.php <image>
 * Example: php exif.php beach.jpg
 */

function show_help()
{
	echo "Usage: php exif.php <image>\nExample: php exif.php beach.jpg\nSupported formats: jpeg/jpg and tiff\n\n";
}

function show_data($img)
{
	$exif = exif_read_data($img, 0, true);

	echo $exif === false ? "\nNo header data\n" : "\nFound image headers\n";

	foreach ($exif as $key => $value) {
		echo "[".$key."] => ".$value."\n";
    		if (is_array($value)) {
    	    		foreach ($value as $k => $v) {
    	        		echo "\t[".$k."] => ".$v."\n";
    		        if (is_array($v)) {
    		            foreach ($v as $a => $b) {
    		                echo "\t\t[".$a."] => ".$b."\n";
    		            }
    		        }
    		    }
    		}
	}
	echo "\n";
}

if ($argv[1] == "" || $argv[1] == "-h") {
	echo "\nShowing Help...\n";
	show_help();
} 
else if (
	strpos($argv[1], ".jpg")  || 
	strpos($argv[1], ".JPG")  || 
	strpos($argv[1], ".jpeg") ||
	strpos($argv[1], ".JPEG") || 
	strpos($argv[1], ".tif")  || 
	strpos($argv[1], ".TIF")  || 
	strpos($argv[1], ".tiff") || 
	strpos($argv[1], ".TIFF")
) { 
	$img_path = $argv[1];
	show_data($img_path);
} 
else {
	die ("\nUnrecognized argument or unsupported file format. Use -h for help.\n");
}

?>