String to html hex color function

s2c-md5.php

<?php

function s2c( $str ) {
	return substr( md5( $str . "snippets.ir" ), -6, 6 );
}

$str = 'snippets.ir';
print '<span style="background-color:#' . s2c($str) . '">' . $str . '</span>';

$str = 'mahdiy.ir';
print '<span style="background-color:#' . s2c($str) . '">' . $str . '</span>';

$str = 'php';
print '<span style="background-color:#' . s2c($str) . '">' . $str . '</span>';

s2c.php

<?php

function s2c( $str ) {
	echo $code = dechex( crc32( $str . "snippets.ir" ) );
	$code = substr( $code, -6, 6 );
	return $code;
}

$str = 'snippets.ir';
print '<span style="background-color:#' . s2c($str) . '">' . $str . '</span>';

$str = 'mahdiy.ir';
print '<span style="background-color:#' . s2c($str) . '">' . $str . '</span>';

$str = 'php';
print '<span style="background-color:#' . s2c($str) . '">' . $str . '</span>';