How to Fix 'Allowed memory size exhausted' Error During Composer Require?

Exceeding Memory Limit During Composer Require Operation: PHP Fatal Error

When executing composer require, users may encounter the following error:

PHP Fatal error: Allowed memory size of 1610612736 bytes exhausted (tried to allocate 67108864 bytes) in .../composer.phar/src/Composer/DependencyResolver/Solver.php on line 220

This indicates that Composer has run out of memory while attempting to resolve dependencies. To address this, several solutions are available:

1. Increase Memory Limit in php.ini

• Determine the current memory limit: php -r "echo ini_get('memory_limit').PHP_EOL;"

• Modify php.ini to increase the limit, e.g.:

  memory_limit = -1  // Unlimited
  or
  memory_limit = 2G // 2 Gigabytes

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2. Set Memory Limit Using Command-Line Argument

php -d memory_limit=-1 composer.phar require <package1> <package2> ...

3. Check Loaded php.ini Files

php --ini

4. Set Environment Variable

COMPOSER_MEMORY_LIMIT=-1 composer require <package1> <package2> ...

5. Use composer.phar Flag (Alternative Method)

composer.phar COMPOSER_MEMORY_LIMIT=-1 require <package1> <package2> ...

6. Other Quick Solutions

• php composer.phar COMPOSER_MEMORY_LIMIT=-1 require <package1> <package2> ...
• COMPOSER_MEMORY_LIMIT=-1 composer require <package1> <package2> ...

When adjusting the memory limit, it is recommended to start with a reasonable value (e.g., 2G) and gradually increase it as needed. Also, check if there are any unnecessary dependencies or plugins that may consume excessive memory.

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