PHP

composer 1 memory limit
## issue composer will run into memory limit due to memory leak when checking lot of package. 
 ## solution: 
 ### temporary usage unlimited memory 
 php -d memory\_limit=-1 /usr/local/bin/composer require prettus/l5-repository 
 /usr/bin/composer 
 php -d memory\_limit=-1 /usr/bin/composer update 
 ### update to composer 2 
 need to check if current package support composer 2 or not.

install in centos
# Centos 8 Stream 
 ``sudo dnf upgrade --refresh -y`` 
 EPEL 
 ``sudo dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm`` 
 REMI 
 ``sudo dnf install dnf-utils http://rpms.remirepo.net/enterprise/remi-release-8.rpm`` 
 ## if old php is installed 
 ``sudo dnf remove php php-fpm -y`` 
 remove package 
 ``sudo dnf remove php* -y`` 
 reset list 
 ``sudo dnf module list reset php -y`` 
 ## enable php8.1 
 show list 
 ``sudo dnf module list php`` 
 enable remi php8.1 
 ``sudo dnf module enable php:remi-8.1`` 
 basic php for laravel 
 ``dnf install php php-fpm php-opcache php-gd php-curl php-mysqlnd php-mbstring php-dom zip unzip php-zip php-json php-pdo php-pdo_mysql`` 
 other if needed 
 ``php-cli php-intl php-common php-bcmath php-imap php-imagick php-xmlrpc php-json php-readline php-memcached php-redis php-mbstring php-apcu php-xml`` 
 confirm installation 
 ``php -v``

Laragon to Open 2 Different System with different PHP version
Terminal Project with PHP7.4 ``` cmd.exe /k "set PATH=C:\laragon\bin\php\php-7.4.33-nts-Win32-vc15-x64;%PATH%" ``` Terminal Project with PHP8.3 ``` cmd.exe /k "set PATH=C:\laragon\bin\php\php-8.3.7-nts-Win32-vs16-x64;%PATH%" ``` 
 After run that command, you can use command "php artisan yourcommand" or "composer" like always. 
 -- command "composer install"  
 **Attention : Please rename path based on your php version.. **

preg_replace
```php preg_replace('//\W|_/', '', '') // remove non-alphanumeric 
 preg_replace("/[^A-Za-z0-9 ]/", 
 preg_replace('/[^\d]/i', '', '') // remove non-numeric 
 preg_replace('/[^A-Za-z0-9\ \/\-\n\,]+/', '', $address); // remove non alpha + new line, space, some special char 

 ```