Regex Help

[OhLordy]

Could I get some help figuring out a regex that returns true if the input string is alphanumeric and has it least one numeric digit in it?

[laserlight]

This is an idea that might work:

if (ctype_alnum($string)) {
	if (ctype_alpha($string)) {
		//sorry, completely alphabetic
	}
	else {
		//it's alphanumeric
		//with at least 1 numeric digit!
	}
}
else {
	//$string is not alphanumeric
}

[OhLordy]

Excellent! That's working fine now.

[kwylez]

Originally posted by OhLordy
Could I get some help figuring out a regex that returns true if the input string is alphanumeric and has it least one numeric digit in it?

you could also use:

$string = 'this is a string with a number 9';
if (preg_match('/[[:alnum:]]/',$string)) {
print "We have a winner\n";
}

[OhLordy]

that last one will also return true if there is no numeric value in it.

[ucbones]

Adapting laserlight's slightly, this should help compact your script a little, don't know if it will be faster, but it might be easier to read...

if ((ctype_alnum($string)) and (ctype_alpha($string))) {
	//it's alphanumeric with at least 1 numeric digit!
}
else {
	//$string is not alphanumeric
}