PHP speed – empty VS isset VS === with error suppression

supreesion_benchmark.php

<?
$myvar = array();

$times = 1000000;
 
$start = microtime(true);
for($x=0;$x<$times;$x++){
 
    if( @$myvar['test'] === null ) { }
 
}
$end = microtime(true);
$duration = $end-$start;
printf("Test null: %s \n", $duration);
 
 
$start = microtime(true);
for($x=0;$x<$times;$x++){
 
    if( !isset( $myvar['test'] )) {  }
 
}
$end = microtime(true);
$duration = $end-$start;
printf("Test isset: %s \n", $duration);
 
 
$start = microtime(true);
for($x=0;$x<$times;$x++){
 
    if( empty( $myvar['test'] )) {  }
 
}
$end = microtime(true);
$duration = $end-$start;
printf("Test empty: %s \n", $duration);
 
// populate 
$myvar['test'] = true;
 
$start = microtime(true);
for($x=0;$x<$times;$x++){
 
    if( @$myvar['test'] === null ) { }
 
}
$end = microtime(true);
$duration = $end-$start;
printf("Test null: %s \n", $duration);
 
 
$start = microtime(true);
for($x=0;$x<$times;$x++){
 
    if( !isset( $myvar['test'] )) {  }
 
}
$end = microtime(true);
$duration = $end-$start;
printf("Test isset: %s \n", $duration);
 
$start = microtime(true);
for($x=0;$x<$times;$x++){
 
    if( empty( $myvar['test'] )) {  }
 
}
$end = microtime(true);
$duration = $end-$start;

printf("Test empty: %s \n", $duration);

A suggestion, <? ?> Avoid php short open tags.. because most won't enable short open tags.
and
Its better to have php full tag <?php ?> , It will work whether short_open_tag is enabled/disabled, its better to avoid php short tags.

❤ Just an suggestion (Got the code through search) Hope this will help others too..
Thank you.