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File: examples/benchmarkglobal.php

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File: examples/benchmarkglobal.php
Role: Auxiliary script
Content type: text/plain
Description: Auxiliary script
Class: PHP Validation One Library
Fetch and validate forms and request values
Author: By
Last change: Update of examples/benchmarkglobal.php
Date: 2 years ago
Size: 3,131 bytes
 

Contents

Class file image Download
<?php
echo "<pre>";
$baseVar = str_repeat('x', 1000000);
$GLOBALS['myVar'] = $baseVar;
define('BASEVAR',$baseVar);

const
BASEVAR2=BASEVAR;

function
testfunc_param($paramVar) {
   
$localVar = $paramVar;
    return
$localVar;
}

function
testfunc_global() {
    global
$myVar;
   
$localVar = $myVar;
    return
$localVar;
}

function
testfunc_globalsarray() {
   
$localVar = $GLOBALS['myVar'];
    return
$localVar;
}

function
testfunc_globalsarray2() {
    return
$GLOBALS['myVar'];
}

function
testfunc_const() {
    return
BASEVAR;
}

function
testfunc_const2() {
    return
BASEVAR2;
}

// Testing passing value by parameter
memory_get_usage(); // in case this procs garbage collection
$memoryStart = memory_get_usage(true);
$timeStart = microtime(true);
for (
$i = 0; $i < 10000000; $i++) {
   
testfunc_param($baseVar);
}
$timeEnd = microtime(true);
$memoryEnd = memory_get_usage(true);
print
"Pass value by parameter\nTime: ".($timeEnd - $timeStart)."s\nMemory: ".($memoryEnd-$memoryStart)."\n\n";


// Testing reference to global variable
memory_get_usage(); // in case this procs garbage collection
$memoryStart = memory_get_usage(true);
$timeStart = microtime(true);
for (
$i = 0; $i < 10000000; $i++) {
   
testfunc_global();
}
$timeEnd = microtime(true);
$memoryEnd = memory_get_usage(true);
print
"Global var reference\nTime: ".($timeEnd - $timeStart)."s\nMemory: ".($memoryEnd-$memoryStart)."\n\n";


// Testing reference to global variable via $GLOBALS
memory_get_usage(); // in case this procs garbage collection
$memoryStart = memory_get_usage(true);
$timeStart = microtime(true);
for (
$i = 0; $i < 10000000; $i++) {
   
testfunc_globalsarray();
}
$timeEnd = microtime(true);
$memoryEnd = memory_get_usage(true);
print
"GLOBALS array reference\nTime: ".($timeEnd - $timeStart)."s\nMemory: ".($memoryEnd-$memoryStart)."\n\n";

// Testing reference to global variable via $GLOBALS
memory_get_usage(); // in case this procs garbage collection
$memoryStart = memory_get_usage(true);
$timeStart = microtime(true);
for (
$i = 0; $i < 10000000; $i++) {
   
testfunc_globalsarray2();
}
$timeEnd = microtime(true);
$memoryEnd = memory_get_usage(true);
print
"GLOBALS array reference2\nTime: ".($timeEnd - $timeStart)."s\nMemory: ".($memoryEnd-$memoryStart)."\n\n";

// Testing reference to global variable via $GLOBALS
memory_get_usage(); // in case this procs garbage collection
$memoryStart = memory_get_usage(true);
$timeStart = microtime(true);
for (
$i = 0; $i < 10000000; $i++) {
   
testfunc_const();
}
$timeEnd = microtime(true);
$memoryEnd = memory_get_usage(true);
print
"GLOBALS array const define\nTime: ".($timeEnd - $timeStart)."s\nMemory: ".($memoryEnd-$memoryStart)."\n\n";

// Testing reference to global variable via $GLOBALS
memory_get_usage(); // in case this procs garbage collection
$memoryStart = memory_get_usage(true);
$timeStart = microtime(true);
for (
$i = 0; $i < 10000000; $i++) {
   
testfunc_const();
}
$timeEnd = microtime(true);
$memoryEnd = memory_get_usage(true);
print
"GLOBALS array const\nTime: ".($timeEnd - $timeStart)."s\nMemory: ".($memoryEnd-$memoryStart)."\n\n";


echo
"</pre>";

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