PHP Fatal error: Composer detected issues in your platform: Your Composer dependencies require a PHP version “>= 7.2.5”. You are running 7.1.32.

When you using PHP version 7.1.32 within your Laravel project, then showing this type of error in your project. If you want to update the composer still not solve you problem then After that Follow this trick-

add this line in config object of composer.json file

“platform-check”: false

run php artisan config:cache

then run composer dump-autoload in terminal

Tagged : / / / / / / / / / /

Difference between use and require in Perl – use Vs require in perl


|| use Vs require in perl || What is the difference between use and require?

Except of course that use is evaluated at compile time where as require is evaluated at run time in other word, A use anywhere in the code will be evaluated when the code is run compiled, but require – import’s can only get evaluated when encoutered.

The differences are many and often subtle:

  1. use only expects a bareword, require can take a bareword or an expression
  2. use is evaluated at compile-time, require at run-time
  3. use implicitly calls the import method of the module being loaded, require does not
  4. use excepts arguments in addition to the bareword (to be passed to import), require does not
  5. use does not behave like a function (i.e can’t be called with parens, can’t be used in an expression, etc), whereas require does

do $file is like eval `cat $file`, except the former:
1.1: searches @INC and updates %INC.
1.2: bequeaths an *unrelated* lexical scope on the eval’ed code.

require $file is like do $file, except the former:
2.1: checks for redundant loading, skipping already loaded files.
2.2: raises an exception on failure to find, compile, or execute $file.

require Module is like require “”, except the former:
3.1: translates each “::” into your system’s directory separator.
3.2: primes the parser to disambiguate class Module as an indirect object.

use Module is like require Module, except the former:
4.1: loads the module at compile time, not run-time.
4.2: imports symbols and semantics from that package to the current one.

Command to learn more about use and require
> perldoc -f require
> perldoc -f use

Tagged : / / / / / / / /