<?php
ini_set("TZ","Europe/Paris");
//error_reporting(E_ALL);
ini_set("memory_limit","320M");
/**
 * benchmark
 * @access public
 * @var $timing_start_times float
 * @var $timing_stop_times float
 */
class benchmark {

	public $timing_start_times;
	public $timing_stop_times;


	/**
	* benchmark::timer_start()
	* @access public
	* @param string $name
	* @return int
	*/
	public function timer_start($name = 'default'){
		$this->timing_start_times[$name] = explode(' ', microtime());
	}

	/**
	* benchmark::timer_stop()
	* @access public
	* @param string $name
	* @return
	*/
	public function timer_stop($name = 'default'){
		$this->timing_stop_times[$name] = explode(' ', microtime());
	}

	/**
	* benchmark::timer_result()
	* @access public
	* @param string $name
	* @return int
	*/
	public function timer_result($name = 'default'){
		if (!isset($this->timing_start_times[$name])) {
        	return 0;
    	}
    	if (!isset($this->timing_stop_times[$name])) {
        	$stop_time = explode(' ', microtime());
    	}
    	else
		{
        	$stop_time = $this->timing_stop_times[$name];
    	}
	    // do the big numbers first so the small ones aren't lost
	    $current = $stop_time[1] - $this->timing_start_times[$name][1];
	    $current += $stop_time[0] - $this->timing_start_times[$name][0];
	    return $current;
	}

}

$bm = new benchmark();
$bm->timer_start('bench');

class smallobject {

    public $avar = 'hello';

    public function smallobject() {
        echo "some hairy constructor\n";
    }

    public function afunc() {
        echo $avar;
    }

}

class largeobject {

	public $var0 = 'some string';
    public $var1 = 'some string';
    public $var2 = 'some string';
    public $var3 = 'some string';
    public $var4 = 'some string';
    public $var5 = 'some string';
    public $var6 = 'some string';
    public $var7 = 'some string';
    public $var8 = 'some string';
    public $var9 = 'some string';
    public $var10 = 'some string';
    public $var11 = 'some string';
    public $var12 = 'some string';
    public $var13 = 'some string';
    public $var14 = 'some string';
    public $var15 = 'some string';
    public $var16 = 'some string';
    public $var17 = 'some string';
    public $var18 = 'some string';
    public $var19 = 'some string';
    public $var20 = 'some string';
    public $var21 = 'some string';
    public $var22 = 'some string';
    public $var23 = 'some string';
    public $var24 = 'some string';
    public $var25 = 'some string';
    public $var26 = 'some string';
    public $var27 = 'some string';
    public $var28 = 'some string';
    public $var29 = 'some string';
    public $var30 = 'some string';
    public $var31 = 'some string';
    public $var32 = 'some string';
    public $var33 = 'some string';
    public $var34 = 'some string';
    public $var35 = 'some string';
    public $var36 = 'some string';
    public $var37 = 'some string';
    public $var38 = 'some string';
    public $var39 = 'some string';
    public $var40 = 'some string';

    public function largeobject() {
        echo "some hairy constructor\n";
    }

    public function afunc11($a) {
        echo "a function\n";
    }

    public function afunc12($a) {
                echo "a function\n";
    }

    public function afunc13($a) {
                echo "a function\n";
    }

    public function afunc14($a) {
                echo "a function\n";
    }

    public function afunc15($a) {
                echo "a function\n";
    }

    public function afunc16($a) {
                echo "a function\n";
    }

    public function afunc17($a) {
                echo "a function\n";
    }

    public function afunc18($a) {
                echo "a function\n";
    }

    public function afunc19($a) {
                echo "a function\n";
    }

    public function afunc20($a) {
                echo "a function\n";
    }

    public function afunc21($a) {
                echo "a function\n";
    }

}

$numObjs=50000;

// creation of objects
for ($i=0; $i<$numObjs; $i++) {
    $large[$i] = new largeobject();
    $large[$i]->small[$i] = new smallobject();
}

// calling methods
for ($i=0; $i<$numObjs; $i++) {

        $large[$i]->afunc11('hi');
        $large[$i]->afunc12('hi');
        $large[$i]->afunc13('hi');
        $large[$i]->afunc14('hi');
        $large[$i]->afunc15('hi');
        $large[$i]->afunc16('hi');
        $large[$i]->afunc17('hi');
        $large[$i]->afunc18('hi');
        $large[$i]->afunc19('hi');
        $large[$i]->afunc20('hi');
        $large[$i]->afunc21('hi');
}

// property access
for ($i=0; $i<$numObjs; $i++) {
    for ($t=0; $t<=40; $t++) {
        $somevar = 'var'.$t;
        $a = $large[$i]->$somevar;
        $b = $large[$i]->small[$i]->avar;
    }
}
$bm->timer_stop('bench');
echo '<h2>Result</h2>';
echo $bm->timer_result('bench') .'<br />';

function getRealSize ($filesize){
	if(($filesize/1024)<1024){
		return round (($filesize/1024),2) . " kb";
	}
	elseif((($filesize/1024)/1024)<1024){
		return round ((($filesize/1024)/1024),2) . " Mb";
	}
	elseif(((($filesize/1024)/1024)/1024)<1024)
	{
		return round (((($filesize/1024)/1024)/1024),2) . " Gb";
	}
	else
	{
		return round ((((($filesize/1024)/1024)/1024)/1024),2) . " Tb";
	}
}

if (version_compare(phpversion( ), '5.2.0', '>=')) {
	echo '<b>Peak Memory: ' . getRealSize(memory_get_peak_usage()) . ' Peak Memory (real): ' . getRealSize(memory_get_peak_usage(true)) . ' memory usage: ' . getRealSize(memory_get_usage()) .'</b><br />';
}
ob_end_flush();
?>