note 56628 added to function.abs

Although it is not a requirement to do a check on the variable to be fed to abs(), it is suggested merely out of good programming practices. A simple abs() statement could be: <?php if(is_numeric(abs($var))) return $var; else return 0; ?> For those of you who love short-cuts... <?php (is_numeric(abs($var)))?return $var:else return 0; ?> Note that we don't check the variable to see if it is a number until <em>after</em> we have computed the absolute value. It would be perfectly logical to do this instead: <?php if(is_numeric($var)) return abs($var); else return 0; ?> For those of you who love short-cuts... <?php (is_numeric($var))?return abs($var):else return 0; ?> The thing to keep in mind that is in many languages, you might throw an error if $var is not a number. ---- Manual Page -- http://www.php.net/manual/en/function.abs.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+56628 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+56628&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+56628&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+56628&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+56628&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+56628&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+56628&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+56628&report=yes Search -- http://master.php.net/manage/user-notes.php