How to remove every other character?

Hi, I have a string, and I want to remove every other character. Does anyone know the easiest way to do that?

 

<?php
	$my_string = "ansimation"; //expected result: asmto
	function char_skip($str)
	{
		$r = "";
		for ($x =0; $x < strlen($str); $x++)
		{
			if($x % 2 == 0)
				$r .= $str[$x];
		}
		return $r;
	}

	echo char_skip($my_string);
?>

PHP:

 

you can do it even easier, without the modulo operator:

<?php
    $my_string = "ansimation"; //expected result: asmto
    function char_skip($str)
    {
        $r = "";
        for ($x =0; $x < strlen($str); $x+=2)
        {
                $r .= $str[$x];
        }
        return $r;
    }

    echo char_skip($my_string);
?>

PHP:

 

Yet another solution would be regular expression:

function char_skip($str)
{
	return preg_replace('/(.)./', '$1', $str);
}

PHP:

 

thanks guys