fcall.php

<?php
$time = microtime(true);

$i = 0;
loop:
    if ($i >= 1000) goto endloop;
    $ret = dummy($i);
    ++$i;
    goto loop;
    endloop:

echo microtime(true) - $time, "\n";
exit();

function dummy($i)
{
    return $i + $i;
}

goto.php

<?php
$stack = array();
$time = microtime(true);

$i = 0;
loop:
    if ($i >= 1000) goto endloop;
    array_push($stack, $i);
    goto dummy;
    L1: $ret = array_pop($stack);
    ++$i;
    goto loop;
    endloop:

echo microtime(true) - $time, "\n";
exit();


dummy:
    $_i = array_pop($stack);
    array_push($stack, $_i * $_i);
    goto L1;

goto2.php

<?php
$time = microtime(true);

$i = 0;
loop:
    if ($i >= 1000) goto endloop;
    goto dummy;
    L1: ++$i;
    goto loop;
    endloop:

echo microtime(true) - $time, "\n";
exit();


dummy:
    $ret = $i * $i;
    goto L1;

goto3.php

<?php
$time = microtime(true);

$_addr = 1;
$i = 0;
loop:
    if ($i >= 1000) goto endloop;
    $_0 = 'ret';
    $_1 = 'i';
    goto dummy;
    L1: ++$i;
    goto loop;
    endloop:

echo microtime(true) - $time, "\n";
exit();


dummy:
    $$_0 = $$_1 * $$_1;
    goto L1;

goto4.php

<?php
$stack = array();
$stack_sp = -1;
$time = microtime(true);

$i = 0;
loop:
    if ($i >= 1000) goto endloop;
    $stack[++$stack_sp] = $i;
    goto dummy;
    L1: $ret = $stack[$stack_sp]; unset($stack[$stack_sp--]);
    ++$i;
    goto loop;
    endloop:

echo microtime(true) - $time, "\n";
exit();


dummy:
    $_i = $stack[$stack_sp]; unset($stack[$stack_sp--]);
    $stack[++$stack_sp] = $_i * $_i;
    goto L1;

mcall.php

<?php
$time = microtime(true);

$obj = new Dummy;
$i = 0;
loop:
    if ($i >= 1000) goto endloop;
    $ret = $obj->dummy($i);
    ++$i;
    goto loop;
    endloop:

echo microtime(true) - $time, "\n";
exit();

class Dummy
{
    function dummy($i)
    {
        return $i + $i;
    }
}