Fatal error: Allowed memory size of 1879048192 bytes exhausted (tried to allocate 4096 bytes) in /usr/share/php/Composer/DependencyResolver/RuleSetGenerator.php on line 126 code example

Example 1: Allowed memory size of 1610612736 bytes exhausted

export COMPOSER_MEMORY_LIMIT=-1

Example 2: Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 119541600 bytes) in C:\xampp\htdocs\backup-vice.php on line 67

<?php 
ini_set('memory_limit', '1024M'); // or you could use 1G

?>