June 2005
Intermediate to advanced
794 pages
18h 27m
German
Content preview from PHP 5 KochbuchBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
10.19 Debug-Informationen protokollieren
Problem
Sie möchten das Debuggen erleichtern, indem Sie Anweisungen zur Ausgabe von Variablen einfügen. Aber Sie möchten auch auf einfache Weise zwischen dem Produktions- und dem Debug-Modus umschalten können.
Lösung
Schreiben Sie eine Funktion, die Mitteilungen in Abhängigkeit von der Definition einer Konstanten ausgibt, die mit Hilfe der Konfigurationseinstellung auto_prepend_file in der Seite eingefügt wird. Speichern Sie den folgenden Code in debug.php:
// Debugging einschalten
define('DEBUG',true);
// Generische Debug-Funktion
function pc_debug($message) {
if (defined('DEBUG') && DEBUG) {
error_log($message);
}
}Setzen Sie die Direktive auto_prepend_file in php.ini:
auto_prepend_file=debug.php
Rufen Sie ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.