问题
I have tried setting the limit in php.ini but I always get the same error:
Allowed memory size of 262144 bytes exhausted (tried to allocate 341351 bytes) in Unknown on line 0
I can work around this by calling php -d memory_limit=2048M script.php
But can't figure out what to do with composer.
回答1:
Add this at the very top your code of PHP
ini_set("memory_limit", "2048M"); in your PHP script. Make sure to increase memory_limit according to your need.
If you keep on getting this kind of error message of exhausted memory. you can use ini_set("memory_limit", "-1");. This will set your memory limit to no limit.
Note: This will set your memory limit to no limit. Memory limit is the thing which is dependent on your
OSandRAMnot onPHP.Note: Also please make sure if you are doing something on your production environment in your PHP script, whose job is to keep on adding data to there script, either in your static variables(Example:
gathering multiple CSV's data) or some arrays, then it can lead to either failure of that VM or PHP process in case of complete memory exhaust.
回答2:
The default php.ini file for the CLI in xampp is located in %xamppRoot%\php\php.ini not under %xamppRoot%\apache\bin\php.ini
回答3:
As php-cli has a different ini file, this often leads to misconfiguration.
What we can do, for a «unix shebang» php bash script, is to set ini keys on the fly directly on the shebang line, like so:
#!/usr/bin/php -d memory_limit=512M
<?php
phpinfo();
exit;
Then to see if php had understood, using phpinfo():
./myphpProg | grep memory
Correct shell output should contain:
memory_limit => 512M => 512M
To better understand shebangs scripting, doing the above is similar as running the same file from the interpreter:
php -d memory_limit=512M myphpProg
来源：https://stackoverflow.com/questions/43548976/how-do-i-set-the-memory-limit-for-php-cli-when-using-xampp