PHP Fatal error: Allowed memory size of 2097152 bytes exhausted (tried to allocate 2002944 bytes) in Unknown on line 0 code example

Example 1: Fatal error: Allowed memory size of 1610612736 bytes exhausted

Fatal error: Allowed memory size of 1610612736 bytes exhausted

export COMPOSER_MEMORY_LIMIT=-1
and restart composer update

Example 2: PHP Fatal error: Allowed memory size of 134217728 bytes exhausted

memory_limit = 64M;

Example 3: Allowed memory size of 1610612736 bytes exhausted (tried to allocate 4096 bytes) laravel

1. Firstly i find which php.ini is working because i was using multiple xampp,
  so using : php --ini
2. after that in that file i updated the memory_limit = -1

Example 4: Fatal error: Allowed memory size of 1610612736 bytes exhausted (tried to allocate 32 bytes) in

;memory_limit=512M