solid.php

gistfile1.aw

<?php
# Generate solid pgn square
if (count($argv) != 3) die("Bad Format:\nUsage:\tphp gen_image rgb file");

$im = @imagecreate(100, 100)
    or die("Cannot Initialize new GD image stream");

$rgb = hex2RGB($argv[1]);
$background_color = imagecolorallocate($im, $rgb['red'], $rgb['green'], $rgb['blue']);
imagepng($im,$argv[2] . '.png');

imagedestroy($im);

function hex2RGB($hexStr, $returnAsString = false, $separator = ',') {
    $hexStr = preg_replace("/[^0-9A-Fa-f]/", '', $hexStr); // Gets a proper hex string
    $rgbArray = array();
    if (strlen($hexStr) == 6) { //If a proper hex code, convert using bitwise operation. No overhead... faster
        $colorVal = hexdec($hexStr);
        $rgbArray['red'] = 0xFF & ($colorVal >> 0x10);
        $rgbArray['green'] = 0xFF & ($colorVal >> 0x8);
        $rgbArray['blue'] = 0xFF & $colorVal;
    } elseif (strlen($hexStr) == 3) { //if shorthand notation, need some string manipulations
        $rgbArray['red'] = hexdec(str_repeat(substr($hexStr, 0, 1), 2));
        $rgbArray['green'] = hexdec(str_repeat(substr($hexStr, 1, 1), 2));
        $rgbArray['blue'] = hexdec(str_repeat(substr($hexStr, 2, 1), 2));
    } else {
        return false; //Invalid hex color code
    }
    return $returnAsString ? implode($separator, $rgbArray) : $rgbArray; // returns the rgb string or the associative array
}
?>