trigger_error funksiyasi

trigger_error funksiyasi foydalanuvchi xabarini yaratadi. Birinchi parametr sifatida xabar matnini, ikkinchi parametr sifatida esa xato darajasini (standart bo'yicha E_USER_NOTICE) qabul qiladi. Funksiya debug qilish va shaxsiy xatolarni qayta ishlash tizimini yaratish uchun foydalidir.

Sintaksis

phptrigger_error(message, error_level);

Misol

Oddiy bildirishnoma yaratamiz:

php<?php
  trigger_error("This is a notice message");
?>

Kodni bajarish natijasi:

phpNotice: This is a notice message in file.php on line 2

Misol

Foydalanuvchi ogohlantirishini yaratamiz:

php<?php
  trigger_error("Invalid value entered", E_USER_WARNING);
?>

Kodni bajarish natijasi:

phpWarning: Invalid value entered in file.php on line 2

Misol

Fatal xatoni yaratamiz:

php<?php
  trigger_error("Critical system error", E_USER_ERROR);
?>

Kodni bajarish natijasi:

phpFatal error: Critical system error in file.php on line 2

Misol

Shartli konstruktsiyada foydalanish:

php<?php
  $age = -5;
  if ($age < 0) {
    trigger_error("Age cannot be negative", E_USER_WARNING);
  }
?>

Kodni bajarish natijasi:

phpWarning: Age cannot be negative in file.php on line 4