Variable containing capital letters?

[danieloberg]

Can you tell how many capital letters a $var contains?

Thanks!

/Daniel

[nunomira]

<?php
$i=0;
$str = 'StriNG';
$chars = preg_split('//', $str, -1, PREG_SPLIT_NO_EMPTY);
foreach($chars as $value){
	if(ord($value)>=45 && ord($value)<=90){
		$i++;
	}
}
echo $i;
?>

[laserlight]

This should be somewhat simpler, since a string can be seen as an array of characters (though in PHP an array isnt really an array so....)

function numUpper($string) {
	$len = strlen($string);
	$total = 0;
	for ($i = 0; $i < $len; $i++) {
		if (ctype_upper($string{$i})) {
			$total++;
		}
	}
	return $total;
}

in which case after defining the function you can use:

$str = 'StriNG';
echo numUpper($str);

Incidentally, nunomira, your example wont work, since the uppercase letters start at ASCII 65
It will have to be modified slightly to take that into account.