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Re: Dot in array key name [message #169973 is a reply to message #169966]

Sat, 02 October 2010 13:39

August Karlstrom
Messages: 16
Registered: October 2010

Karma:

Junior Member

On 2010-10-02 08:30, Martin wrote:
> $icons=array();
>
> $icon_name='myicon.png';
>
> if($icons[$icon_name]){
> // the image has already been loaded
> $icon=$icons[$icon_name];
> } else {
> $icon=imagecreatefrompng($icon_name);
> $icons[$icon_name]=$icon;
> }

In the code above you reset the icon array each time the script is run,
which is probably not what you want. You should also use the function
isset in the if-statement condition so it can handle all file names
correctly including "0" and "0.0" (both interpreted as boolean false):

if (!isset($icons[$icon_name])) {
$icons[$icon_name] = imagecreatefrompng($icon_name);
}
$icon = $icons[$icon_name];

> I'm trying not to load an image more than once if it is required more
> than once.
>
> Anyway - i have a bug where sometimes the wrong image is used and
> wondered whether the dot in the image's filename is invalid syntax for
> an array key name?

No, it's perfectly valid.

/August

--
The competent programmer is fully aware of the limited size of his own
skull. He therefore approaches his task with full humility, and avoids
clever tricks like the plague. --Edsger Dijkstra

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[Message index]

		Dot in array key name By: Martin on Sat, 02 October 2010 06:30
		Re: Dot in array key name By: Jerry Stuckle on Sat, 02 October 2010 13:19
		Re: Dot in array key name By: August Karlstrom on Sat, 02 October 2010 13:39
		Re: Dot in array key name By: Martin on Sun, 03 October 2010 02:04
		Re: Dot in array key name By: Tim Roberts on Sun, 03 October 2010 19:20
		Re: Dot in array key name By: Captain Paralytic on Mon, 04 October 2010 09:50

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