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complex syntax and preg_match


Drongo_III

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Hi Guys

 

Quick question. I am trying to write a sort of multi purpose validation function (just for simple forms).

 

I want to pass a dynamic value to the length part of the regular expression patterns below. I can get this to work for the 'tstring' case in the switch statement (i.e. where i pre-concatenate the values). But if i use complex syntax and then try to pass the values separately ( as in 'tint'  case below) i can't seem to get it to work. Is it possible to do? Or do i need to pre-concatenate first?

 

Thanks chaps!

 

function call looks like:

$validate->multiVal($_POST['name'], 1, 6, 'tstring');

 

Actual function:

public function multiVal($subject, $lenMin, $lenMax, $type){

	$length = $lenMin . "," . $lenMax;
	switch($type){

		case 'tstring':
		$pattern = "/^[a-zA-Z\s\b]{{$length}}$/";
		break;

		case 'tint':
		$pattern = "/^[0-9]{{$lenMin}, {$lenMax}}$/";
		break;


	}


	preg_match($pattern, $subject, $matches);
                 // check results and return true or false
	}

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