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Q&A What are the pros and cons of using objects vs associative arrays for JSON results of a CURL request in PHP?

It's just depend on PHP version. Above PHP 7 PHP object is faster and slightly heavier than array. On PHP 5 and below array is faster and lighter. My test code: <?php $jsonobj = '{"Peter":3...

posted 4y ago by Yaskur‭  ·  edited 4y ago by Yaskur‭

Answer
#3: Post edited by user avatar Yaskur‭ · 2021-01-19T12:23:35Z (almost 4 years ago)
  • It's just depend on PHP version. Above PHP 7 PHP object is faster and lighter than array. On PHP 5 and below array is faster.
  • My test code:
  • ```
  • <?php
  • $jsonobj = '{"Peter":35,"Ben":37,"Joe":43}';
  • $t0 = microtime(true);
  • $arraysOf=array();
  • $inicio=memory_get_usage();
  • for ($i=0; $i<100000; $i++) {
  • $arraysOf[] = json_decode($jsonobj,true);
  • }
  • $fin=memory_get_usage();
  • $timeArray = microtime(true) - $t0;
  • $memArray = $fin-$inicio;
  • echo '<p>arrays: '.$timeArray."</p>";
  • echo '<p>memory: '.$memArray."</p>";
  • $t0 = microtime(true);
  • $arraysOf=array();
  • $inicio=memory_get_usage();
  • for ($i=0; $i<100000; $i++) {
  • $arraysOf[] = json_decode($jsonobj);
  • }
  • $fin=memory_get_usage();
  • $timeObject = microtime(true) - $t0;
  • $memObject = $fin-$inicio;
  • echo '<p>Object: '.$timeObject."</p>";
  • echo '<p>memory: '.$memObject."</p>";
  • $timeDiff = abs(round((1 - $timeArray / $timeObject) * 100));
  • $memDiff = abs(round((1 - $memObject / $memArray) * 100));
  • $speed = $timeArray>$timeObject?"Slower":"Faster";
  • $speed2 = $memObject>$memArray?"Lighter":"Heavier";
  • echo '<p>associative arrays is '.$timeDiff.'% '.$speed.' and '.$memDiff.'% '.$speed2.' than object</p>';
  • ?>
  • ```
  • I tested on php 5.4, 7.4 and 8.
  • You can test and check the result on:
  • - [https://php5.gj.lc/](https://php5.gj.lc/)
  • > associative arrays is 25% Faster and 18% Lighter than object
  • - [https://php7.gj.lc/](https://php7.gj.lc/)
  • > associative arrays is 22% Slower and 10% Lighter than object
  • - [https://php8.gj.lc/](https://php8.gj.lc/)
  • > associative arrays is 14% Slower and 10% Lighter than object
  • It's just depend on PHP version. Above PHP 7 PHP object is faster and slightly heavier than array. On PHP 5 and below array is faster and lighter.
  • My test code:
  • ```
  • <?php
  • $jsonobj = '{"Peter":35,"Ben":37,"Joe":43}';
  • $t0 = microtime(true);
  • $arraysOf=array();
  • $inicio=memory_get_usage();
  • for ($i=0; $i<100000; $i++) {
  • $arraysOf[] = json_decode($jsonobj,true);
  • }
  • $fin=memory_get_usage();
  • $timeArray = microtime(true) - $t0;
  • $memArray = $fin-$inicio;
  • echo '<p>arrays: '.$timeArray."</p>";
  • echo '<p>memory: '.$memArray."</p>";
  • $t0 = microtime(true);
  • $arraysOf=array();
  • $inicio=memory_get_usage();
  • for ($i=0; $i<100000; $i++) {
  • $arraysOf[] = json_decode($jsonobj);
  • }
  • $fin=memory_get_usage();
  • $timeObject = microtime(true) - $t0;
  • $memObject = $fin-$inicio;
  • echo '<p>Object: '.$timeObject."</p>";
  • echo '<p>memory: '.$memObject."</p>";
  • $timeDiff = abs(round((1 - $timeArray / $timeObject) * 100));
  • $memDiff = abs(round((1 - $memObject / $memArray) * 100));
  • $speed = $timeArray>$timeObject?"Slower":"Faster";
  • $speed2 = $memObject>$memArray?"Lighter":"Heavier";
  • echo '<p>associative arrays is '.$timeDiff.'% '.$speed.' and '.$memDiff.'% '.$speed2.' than object</p>';
  • ?>
  • ```
  • I tested on php 5.4, 7.4 and 8.
  • You can test and check the result on:
  • - [https://php5.gj.lc/](https://php5.gj.lc/)
  • > associative arrays is 25% Faster and 18% Lighter than object
  • - [https://php7.gj.lc/](https://php7.gj.lc/)
  • > associative arrays is 22% Slower and 10% Lighter than object
  • - [https://php8.gj.lc/](https://php8.gj.lc/)
  • > associative arrays is 14% Slower and 10% Lighter than object
#2: Post edited by user avatar Yaskur‭ · 2021-01-19T12:07:23Z (almost 4 years ago)
  • It's just depend on PHP version. Above PHP 7 PHP object is faster and lighter than array. On PHP 5 and below array is faster.
  • It's just depend on PHP version. Above PHP 7 PHP object is faster and lighter than array. On PHP 5 and below array is faster.
  • My test code:
  • ```
  • <?php
  • $jsonobj = '{"Peter":35,"Ben":37,"Joe":43}';
  • $t0 = microtime(true);
  • $arraysOf=array();
  • $inicio=memory_get_usage();
  • for ($i=0; $i<100000; $i++) {
  • $arraysOf[] = json_decode($jsonobj,true);
  • }
  • $fin=memory_get_usage();
  • $timeArray = microtime(true) - $t0;
  • $memArray = $fin-$inicio;
  • echo '<p>arrays: '.$timeArray."</p>";
  • echo '<p>memory: '.$memArray."</p>";
  • $t0 = microtime(true);
  • $arraysOf=array();
  • $inicio=memory_get_usage();
  • for ($i=0; $i<100000; $i++) {
  • $arraysOf[] = json_decode($jsonobj);
  • }
  • $fin=memory_get_usage();
  • $timeObject = microtime(true) - $t0;
  • $memObject = $fin-$inicio;
  • echo '<p>Object: '.$timeObject."</p>";
  • echo '<p>memory: '.$memObject."</p>";
  • $timeDiff = abs(round((1 - $timeArray / $timeObject) * 100));
  • $memDiff = abs(round((1 - $memObject / $memArray) * 100));
  • $speed = $timeArray>$timeObject?"Slower":"Faster";
  • $speed2 = $memObject>$memArray?"Lighter":"Heavier";
  • echo '<p>associative arrays is '.$timeDiff.'% '.$speed.' and '.$memDiff.'% '.$speed2.' than object</p>';
  • ?>
  • ```
  • I tested on php 5.4, 7.4 and 8.
  • You can test and check the result on:
  • - [https://php5.gj.lc/](https://php5.gj.lc/)
  • > associative arrays is 25% Faster and 18% Lighter than object
  • - [https://php7.gj.lc/](https://php7.gj.lc/)
  • > associative arrays is 22% Slower and 10% Lighter than object
  • - [https://php8.gj.lc/](https://php8.gj.lc/)
  • > associative arrays is 14% Slower and 10% Lighter than object
#1: Initial revision by user avatar Yaskur‭ · 2021-01-19T05:11:18Z (almost 4 years ago)
It's just depend on PHP version. Above PHP 7 PHP object is faster and lighter than array. On PHP 5 and below array is faster.