Checking for GD Support in PHP

gdtest.php

<?php

/* Displays details of GD support on your server */

echo '<div style="margin: 10px;">';

echo '<p style="color: #444444; font-size: 130%;">GD is ';

if (function_exists("gd_info")) {

        echo '<span style="color: #00AA00; font-weight: bold;">supported</span> by your server!</p>';

        $gd = gd_info();

        foreach ($gd as $k => $v) {

                echo '<div style="width: 340px; border-bottom: 1px solid #DDDDDD; padding: 2px;">';
                echo '<span style="float: left;width: 300px;">' . $k . '</span> ';

                if ($v)
                        echo '<span style="color: #00AA00; font-weight: bold;">Yes</span>';
                else
                        echo '<span style="color: #EE0000; font-weight: bold;">No</span>';

                echo '<div style="clear:both;"><!-- --></div></div>';
        }

} else {

        echo '<span style="color: #EE0000; font-weight: bold;">not supported</span> by your server!</p>';

}

echo '<p>by <a href="http://www.dagondesign.com">dagondesign.com</a></p>';

echo '</div>';