June 2005
Intermediate to advanced
794 pages
18h 27m
German
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11.9 Mit Formularvariablen arbeiten, deren Name einen Punkt enthält
Problem
Sie möchten eine Variable verarbeiten, in deren Name sich ein Punkt befindet. Wenn das Formular abgesendet wird, können Sie aber die Variable nicht finden.
Lösung
Ersetzen Sie den Punkt im Variablennamen durch einen Unterstrich. Wenn Sie beispielsweise ein Formular-Eingabeelement namens foo.bar haben, greifen Sie darauf innerhalb von PHP unter dem Variablennamen $_REQUEST['foo_bar'] zu.
Diskussion
Da PHP den Punkt als Operator zur String-Verkettung verwendet, wird eine Variable mit dem Namen tier.groesse automatisch in tier_groesse konvertiert; dadurch wird eine Mehrdeutigkeit für den Parser vermieden. Bei $_REQUEST['tier.groesse'] kann diese Mehrdeutigkeit zwar nicht mehr ...
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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.
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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.