<?php


// Initial Configuration
global $aHash;


##
## Tests 1 pour foreach / for / while-list-each
##
function Test1_Start() {
	global $aHash;
	$i   = 0;
	$tmp = '';
	while($i < 1000) {
	  $tmp .= 'a';
	  ++$i;
	}
	$aHash = array_fill(100000000000000000000000, 100, $tmp);
	unset($i, $tmp);
	
	return "foreach / for / while-list-each";
}


function Test1_1() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    foreach($aHash as $val);

    $end = (microtime(true) - $t);
    return array('foreach($aHash as $val);'=>$end);
}

function Test1_2() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    while(list(,$val) = each($aHash));

    $end = (microtime(true) - $t);
    return array('while(list(,$val) = each($aHash));'=>$end);
}

function Test1_3() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    foreach($aHash as $key => $val);

    $end = (microtime(true) - $t);
    return array('foreach($aHash as $key => $val);'=>$end);
}

function Test1_4() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    while(list($key,$val) = each($aHash));

    $end = (microtime(true) - $t);
    return array('while(list($key,$val) = each($aHash));'=>$end);
}

function Test1_5() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    foreach($aHash as $key=>$val) $tmp[] = $aHash[$key];

    $end = (microtime(true) - $t);
    return array('foreach($aHash as $key=>$val) $tmp[] = $aHash[$key];'=>$end);
}

// Test Source
function Test1_6() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    while(list($key) = each($aHash)) $tmp[] = $aHash[$key];

    $end = (microtime(true) - $t);
    return array('while(list($key) = each($aHash)) $tmp[] = $aHash[$key];'=>$end);
}

function Test1_7() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    foreach($aHash as $key[] => $val[]);

    $end = (microtime(true) - $t);
    return array('foreach($aHash as $key[] => $val[]);'=>$end);;
}


function Test1_8() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    array_keys($aHash);
    array_values($aHash);

    $end = (microtime(true) - $t);
    return array('array_keys($aHash); array_values($aHash);'=>$end);
}

// Test Source
function Test1_9() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    $key = array_keys($aHash);
    $size = sizeOf($key);
    for ($i=0; $i<$size; $i++) $tmp[] = $aHash[$key[$i]];

    $end = (microtime(true) - $t);
    return array('for ($i=0; $i<$size; $i++) $tmp[] = $aHash[$key[$i]];'=>$end);
}

// Test Source
function Test1_10() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    $keys=$vals=array();
    while(list($key,$val) = each($aHash)); {$keys[]=$key; $vals[]=$val;}

    $end = (microtime(true) - $t);
    return array('$keys=$vals=array(); while(list($key,$val) = each($aHash)) {$keys[]=$key; $vals[]=$val;}'=>$end);
}
// Variable Clean-up
function Test1_End() {
    global $aHash;
    unset($aHash);
}


function Test2_Start(){Test1_Start(); return 'foreach() vs. for vs. while(list() = each()) ';}
function Test2_End(){return Test1_Start();}

function Test2_1() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    foreach($aHash as $key=>$val) $aHash[$key] .= "a";

    $end = (microtime(true) - $t);
    return array('foreach($aHash as $key=>$val) $aHash[$key] .= "a";'=>$end);
}

function Test2_2() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    while(list($key) = each($aHash)) $aHash[$key] .= "a";
    
    $end = (microtime(true) - $t);
    return array('while(list($key) = each($aHash)) $aHash[$key] .= "a";'=>$end);
}

function Test2_3() {
    global $aHash;

    /* The Test */
    $t = microtime(true);
    $key = array_keys($aHash);
    $size = sizeOf($key);
    for ($i=0; $i<$size; $i++) $aHash[$key[$i]] .= "a";

    $end = (microtime(true) - $t);
    return array('for ($i=0; $i<$size; $i++) $aHash[$key[$i]] .= "a";'=>$end);
}


function Test3_Start(){
	global $aHash;
	$i   = 0;
	$tmp = '';
	while($i < 10000) {
	  $tmp .= 'a';
	  ++$i;
	}
	$aHash = array_fill(5, 100000, $tmp);
	unset($i, $tmp);
	return 'For-loop';
}

// Test Source
function Test3_1() {
    global $x;

    /* The Test */
    $t = microtime(true);
    $size = count($x);
    for ($i=0; $i<$size; $i++);

    $end = (microtime(true) - $t);
    return array('$size = count($x); for ($i=0; $i<$size; $i++);' => $end);
}

// Test Source
function Test3_2() {
    global $x;

    /* The Test */
    $t = microtime(true);
    for ($i=0; $i<count($x); $i++);

    $end = (microtime(true) - $t);
    return array('for ($i=0; $i<count($x); $i++);' => $end);
}

function Test3_3() {
    global $x;

    /* The Test */
    $t = microtime(true);
    $size = sizeof($x);
    for ($i=0; $i<$size; $i++);

    $end = (microtime(true) - $t);
    return array('$size = sizeof($x); for ($i=0; $i<$size; $i++);' => $end);
}

function Test3_4() {
    global $x;

    /* The Test */
    $t = microtime(true);
    for ($i=0; $i<sizeof($x); $i++);

    $end = (microtime(true) - $t);
    return array('for ($i=0; $i<sizeof($x); $i++);' => $end);
}

// Variable Clean-up
function Test3_End() {
    global $x, $aHash;
    unset($x, $aHash);
}


// Echo
function Test11_Start(){return 'Echo / Print';}

function Test11_1() {
    global $answer;

    /* The Test */
    ob_start();
    $t = microtime(true);
    while($i < 1000) {

        echo 'aaaaaaa'.'aaaaaaa'.'aaaaaaa'.'aaaaaaa';

        ++$i;
    }
    $end = microtime(true) - $t;
    ob_end_clean();

    return array("echo 'aaaaaaa'.'aaaaaaa'.'aaaaaaa'.'aaaaaaa';" => $end);
}
function Test11_2() {
    global $answer;

    /* The Test */
    ob_start();
    $t = microtime(true);
    while($i < 1000) {

        echo 'aaaaaaa','aaaaaaa','aaaaaaa','aaaaaaa';

        ++$i;
    }
    $end = microtime(true) - $t;
    ob_end_clean();

    return array("echo 'aaaaaaa','aaaaaaa','aaaaaaa','aaaaaaa';" => $end);
}
function Test11_3() {
    global $answer;

    /* The Test */
    ob_start();
    $t = microtime(true);
    while($i < 1000) {

        print 'aaaaaaa'.'aaaaaaa'.'aaaaaaa'.'aaaaaaa';

        ++$i;
    }
    $end = microtime(true) - $t;
    ob_end_clean();

    return array("print 'aaaaaaa'.'aaaaaaa'.'aaaaaaa'.'aaaaaaa';" => $end);
}
function Test11_4() {
    global $answer;

    /* The Test */
    ob_start();
    $t = microtime(true);
    while($i < 1000) {

        $a = 'aaaaaaa';
        echo $a.$a.$a.$a;

        ++$i;
    }
    $end = microtime(true) - $t;
    ob_end_clean();

    return array('$a'." = 'aaaaaaa'; echo ".'$a.$a.$a.$a;' => $end);
}
function Test11_5() {
    global $answer;

    /* The Test */
    ob_start();
    $t = microtime(true);
    while($i < 1000) {

        $a = 'aaaaaaa';
        echo $a,$a,$a,$a;

        ++$i;
    }
    $end = microtime(true) - $t;
    ob_end_clean();

    return array('$a'." = 'aaaaaaa'; echo ".'$a,$a,$a,$a;' => $end);
}
function Test11_6() {
    global $answer;

    /* The Test */
    ob_start();
    $t = microtime(true);
    while($i < 1000) {

        $a = 'aaaaaaa';
        print $a.$a.$a.$a;

        ++$i;
    }
    $end = microtime(true) - $t;
    ob_end_clean();

    return array('$a'." = 'aaaaaaa'; print ".'$a.$a.$a.$a;' => $end);
}

// Variable Clean-up
function Test11_End() {
    global $answer;
    unset($answer);
}

echo '
	<style>
	body{font-size:80%;}
	table{font-size:100%; margin-left:2em; text-align:left; border:1px solid #888; border-collapse:collapse;} 
	tr.first th{background:#eee;}
	td{border:1px solid #888; padding:5px; text-align:right;}
	th{border:1px solid #888; padding:5px; }
	</style>';


$arr = array(1, 2, 3, 11);
while(list(,$a) = each($arr)){
	$test = 'Test'.$a.'_';
	$start = $test.'Start';
	$end = $test.'End';
	echo '<h1>'.$start().'</h1><table>';
	echo '<tr class="first"><th>Op&eacute;ration</th><th>Temps</th><th>%</th></tr>';
	$b=1;
	$tests = array();
	while(function_exists($test.$b)){
		$start();
		$letest = $test.$b;
		list($cle,$val) = each($letest());
		$tests[$cle] = $val;
		$end();
		$b++;
	}
	$min = min(array_values($tests));
	asort($tests);
	while (list($cle,$val) = each($tests)){
		echo '<tr><th>'.htmlentities($cle).'</th><td>'.number_format($val, 8, ',', ' ').'</td><td>'.(int)($val / $min * 100).'</td></tr>';
	}	
	echo '</table>';
	$a++;
}
echo '</table>';

?>