June 2005
Intermediate to advanced
794 pages
18h 27m
German
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Kapitel 1. Strings
1.0 Einführung
Strings in PHP sind Zeichenfolgen wie etwa »Wir halten diese Wahrheiten für selbstverständlich« oder »Es war einmal« oder auch »111211211«. Wenn Sie Daten aus einer Datei lesen oder auf einem Webbrowser ausgeben, werden Ihre Daten durch Strings repräsentiert.
Auf individuelle Zeichen in Strings können Sie wie in C mit einer Schreibweise im Stil von Array-Indizes zugreifen. Das erste Zeichen in dem String hat den Index 0. Ein Beispiel:
$nachbar = 'Hilda';
print $nachbar[3];
dPHP-Strings unterscheiden sich jedoch von C-Strings dadurch, dass sie binär-sicher sind (d.h., sie können Null-Bytes enthalten) und auf Anweisung wachsen oder schrumpfen können. Ihre Größe ist nur durch den verfügbaren Speicherplatz beschränkt. ...
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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.