gistfile1.php

<?php

interface PackageException { }
class ConcretePackageException extends Exception implements PackageException { }
class MyException extends Exception { }
$total_looped = 10000;

echo "Throwing three different types of exceptions, ", number_format($total_looped), "\n";

$start = microtime(true);
for ($i = 0; $i < $total_looped; ++$i) {
    try { throw new MyException(); } catch (Exception $e) {}
}

$time = microtime(true) - $start;
echo "             MyException: ", $time, "\n",
     "                Time Per: ", ($time / $total_looped), "\n";

$start = microtime(true);
for ($i = 0; $i < $total_looped; ++$i) {
    try { throw new ConcretePackageException(); } catch (Exception $e) {}
}

$time = microtime(true) - $start;
echo "ConcretePackageException: ", $time, "\n",
     "                Time Per: ", ($time / $total_looped), "\n";


$start = microtime(true);
for ($i = 0; $i < $total_looped; ++$i) {
    try { throw new Exception(); } catch (Exception $e) {}
}
$time = microtime(true) - $start;
echo "               Exception: ", $time, "\n",
     "                Time Per: ", ($time / $total_looped), "\n";

?>
// output from run:
Throwing three different types of exceptions, 10,000
             MyException: 0.034233093261719
                Time Per: 3.4233093261719E-6
ConcretePackageException: 0.033795833587646
                Time Per: 3.3795833587646E-6
               Exception: 0.030992984771729
                Time Per: 3.0992984771729E-6