Gets byte length of characters read from stdin

mblen.php

#!/usr/bin/env php
<?php

mb_internal_encoding('UTF-8');

$string = '';
if( count($argv) > 1 ) {
	$string .= implode(' ', array_slice($argv, 1));
} else {
	while( $line = fgets(STDIN) ) {
		$string .= $line;
	}

	$string = substr($string, 0, -1);
}

$len = mb_strlen($string);

for( $i = 0; $i < $len; $i++ ) {
	$rune = mb_substr($string, $i, 1);
	echo "       rune: " . $rune . "\n";
	echo "byte length: " . strlen($rune) . "\n";
	echo "  mb length: " . mb_strlen($rune) . "\n\n";
}