- implode: documentation ( source)
<?php
$string="M";
$strig="";
$strg="";
$stg="";
$last=array($strig,$strg,$string,$stg);
echo Implode($last,"");
/*switch($last) {
case 'k':
case 'K':
echo "k";
break;
case 'm':
case 'M':
echo "k";
break;
default:
echo "o";
}
*/
?>