is_alphabetic

[chadpry]

is there a better way to do this? Both seem clunky but i dunno.

function is_alphabetical($char){
		$alphabetical = 'abcdefghijklmopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';

	foreach($char as $x){
		if(in_array($x,$alphabetical))
			$erroryy.="x";
		else
			$erroryy.="y";
	}

	if(strstr($erroryy, 'y'))
		return false;
	else
		return true;
}

or how about this

function is_alphabetical($char){

$newchar=eregi_replace("[^a-z]",'',$char);

if(strlen($erroryy, 'y')!=0)
			return false;
		else
			return true;


}

[Bunkermaster]

function isalpha( $isitchar ){
	$isitchar = strtolower( $isitchar );
	$stringlen = strlen( $isitchar );
	for ( $i = 0 ; $i < $stringlen ; $i++){
		if( ord($isitchar[$i]) < 97 || ord($isitchar[$i]) > 122 ){
			return 0;
		}
	}
	return 1;
}

This allows for any range if you want to include the euro chars (add OR closes in if)

[acey99]

or

function isalpha($iVal){
return (preg_match("/[A-Z]/i",$iVal) ? 1 : 0;

}

[Bunkermaster]

:glare: I am trying to avoid more questions here

[Weedpacket]

Oh, I thought I'd join in.

function is_alphabetical($string)
{
	return strspn(
		strtolower($string),
		'abcdefghijklmnopqrstuvwxyz'
	)==strlen($string);
}

No, no questions here; the manual explains it all. The important question is: which one is most legible?

Observing that the two original posts aren't even functional (funny, that - I wonder why): an even faster simulation would be

function is_alphabetical($char)
{ trigger_error('Whatever the error message is here', E_USER_WARNING);
}

[Bunkermaster]

erm weed i tested mine 😛 it's perfectly functional

[xblue]

from version 4.0.4 there's ctype_alpha() as well.

[Weedpacket]

Originally posted by Bunkermaster
erm weed i tested mine 😛 it's perfectly functional

I was talking about chadpry's two.

function is_alphabetical($string)
{
return(trim(strtolower($string), 'qwertyuioplkjhgfdsazxcvbnm') == '');
}

xblue's is too easy 😃

[sidney]

well i think that your last function is not easy enough. Weedpacket so ive made it easier but not as simple as ctype
as i know form your last comment that you dont like easier
(joke)

 if(is_alphabetical('ddggg4444hfdff'))
	echo 'alpha';
else 
	echo 'non alpha';


function is_alphabetical($string) 
{ 
return !trim(strtolower($string),'abcdefghijklmnopqrstuvwxyz');
}