if statment evaluation order

[perrio]

could someone clarify the order that php evaluates the statements here?

My problem seems to be that !$this->numbuster()

never gets evaluated regardless the values I pass in.

(that ereg function , i believe needs adjusting too , not sure)
( I want users to be able to user letter and/or numbers but not other than that.

if((ereg("[^{[:alnum:]]",$in_bound['emp_2'])} || empty($in_bound['emp_2']) || $emp_2_size < 7) && !$this ->numbuser($in_bound['emp_2']) ){

[Shrike]

Arguments to if statements get evaluated from left to right, with the exception of nested parentheses which get evaluated from inside out, if you get what I mean.

if(

(ereg("[^[:alnum:]]",$in_bound['emp_2'])
|| empty($in_bound['emp_2']) 
|| $emp_2_size < 7) 
&& !$this ->numbuser($in_bound['emp_2'])

){

You should also be careful when using || and && in the same if block.

if ( $var || $var2 && $var3) // May not work as you'd expect
if ( $var || ( $var2 && $var3) ) // $var2 and $var3 get evaluated together

[drawmack]

left to right and php is a short circuit language so it stops evaluating as soon as it can.