KVytyagov’s gists

KVytyagov / intervals_override.php

Created February 19, 2020 12:14

	<?php

	$intervalsCount = 100;

	$days = range(0, 100);
	//shuffle($days);
	$iteratedDays = array_slice($days, 0, $intervalsCount);

	$intervals = [];
	foreach ($iteratedDays as $days) {

KVytyagov / find_result_check_performance.php

Last active June 26, 2025 10:55

performance instanceof vs eq(null)

	<?php
	$iterations = 10**6;

	class SomeVeryLongNameForCompareWithSomeVeryPerfectMethodOrStrategyAndSomeOtherWordsInThisName {}

	class Short{}

	function checkInstanceOfLongClassName($val): bool {
	return $val instanceof SomeVeryLongNameForCompareWithSomeVeryPerfectMethodOrStrategyAndSomeOtherWordsInThisName;
	}

KVytyagov / concat-performance-comparison

Created October 22, 2019 07:28

concat string comparison

	<?php
	$iterations = 10**7;

	$part1 = 'some_part1_string';
	$part2 = 'some_part2_string';
	$part3 = 'some_part3_string';
	$part4 = 'some_part4_string';

	function singleQuotesConcat(string $p1, string $p2, string $p3, string $p4): string {
	return $p1 . '-' . $p2 . '-' . $p3 . '-' . $p4;

KVytyagov / array_unique_values_performance.php

Last active October 9, 2019 10:45

Check performance to get unique values from array

KVytyagov / big-int-sum.php

Created October 10, 2018 18:27

Function to sum two integers in strings that bigger then PHP_INT_MAX

	<?php

	declare(strict_types=1);

	function getLastIdx(string $strInt): int {
	return '' === $strInt ? -1 : strlen($strInt) - 1;
	}

	function getDigitByIdx(string $strInt, int $idx): int {
	return $idx >= 0 ? (int) $strInt[$idx] : 0;

KVytyagov / array_merge-vs-array_push-in-loop.php

Created May 11, 2018 13:56

Performance test array_merge vs array_push in loop

KVytyagov / strtr-vs-str_replace.php

Last active July 11, 2024 11:47

Performance test strtr vs str_replace

	<?php

	$iterations = 10000000;
	$defaultString = 'Test string m8';
	$replaceTpl = 'm8';
	$placeholder = 'is more effective';

	$start = microtime(true);
	for ($i = 0; $i < $iterations; ++$i) {
	$out = str_replace($replaceTpl, $placeholder, $defaultString);

KVytyagov / isset-vs-array_key_exists-vs-both.php

Last active March 13, 2020 10:38

Test performance of isset, array_key_exists, isset OR array_key_exists on NULL-array item

	<?php

	$a = null;
	$key = null;
	$startIdx = 0;

	$func = function() use (&$a, &$key, &$startIdx) {
	$a = array_fill_keys(range($startIdx, $startIdx+=1000), null);
	$key = $startIdx + 1;
	};

KVytyagov / to-array-conversion-perf-test.php

Last active April 11, 2018 13:03

Test for performance conversion variable to array with checking it's type and without it

Konstantin Vytyagov KVytyagov