note 71062 added to language.operators.string

I ran the follow script and found that using "$var" was 'mostly' slower than using ' '.$var <?php $var = 1; for( $x=0; $x < 101; $x++ ) { echo '<br /><br />var = int( '.$var.' )<br />'; $timer->reset(); for( $i=0; $i<100001; $i++ ) { $string = " {$var} {$var} {$var} {$var} {$var} {$var} {$var} {$var} {$var} {$var} {$var} {$var} {$var} {$var} {$var}"; unset( $string ); } echo 'One string with 15 $vars was set using one concat 100000 times and took '.$timer->fetch_time().' seconds to execute <br />'; $timer->reset(); for( $i=0; $i<100001; $i++ ) { $string = ' '.$var.' '.$var.' '.$var.' '.$var.' '.$var.' '.$var.' '.$var.' '.$var.' '.$var.' '.$var.' '.$var.' '.$var.' '.$var.' '.$var.' '.$var; unset( $string ); } echo 'One string with 15 instances of $var was set using multiple concats 100000 times and took '.$timer->fetch_time().' seconds to execute'; } exit(); ?> Replacing $timer with a generic timing class of course. ---- Server IP: 216.194.113.175 Probable Submitter: 71.231.101.38 ---- Manual Page -- http://www.php.net/manual/en/language.operators.string.php Edit -- https://master.php.net/note/edit/71062 Del: integrated -- https://master.php.net/note/delete/71062/integrated Del: useless -- https://master.php.net/note/delete/71062/useless Del: bad code -- https://master.php.net/note/delete/71062/bad+code Del: spam -- https://master.php.net/note/delete/71062/spam Del: non-english -- https://master.php.net/note/delete/71062/non-english Del: in docs -- https://master.php.net/note/delete/71062/in+docs Del: other reasons-- https://master.php.net/note/delete/71062 Reject -- https://master.php.net/note/reject/71062 Search -- https://master.php.net/manage/user-notes.php