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why is it always an endless loop? [message #186140]

Mon, 16 June 2014 16:06

Mr Oldies
Messages: 241
Registered: October 2013

Karma:

Senior Member

$a="one"
$b="one"

while ($a=$b){echo "equal"; $b="two";)

This simple code causes an endless loop.
Why?

As soon as $b is changed, they are no longer equal, yet the loop continues.
This does not happen in BASIC.
If it is placement, where then should $b be placed?

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[Message index]

		why is it always an endless loop? By: Mr Oldies on Mon, 16 June 2014 16:06
		Re: why is it always an endless loop? By: Markus Heinz on Mon, 16 June 2014 16:17
		Re: why is it always an endless loop? By: Derek Turner on Mon, 16 June 2014 16:19
		Re: why is it always an endless loop? By: Stephan Jaschke on Mon, 16 June 2014 16:19
		Re: why is it always an endless loop? By: Doug Miller on Mon, 16 June 2014 16:35
		Re: why is it always an endless loop? By: Denis McMahon on Mon, 16 June 2014 17:27
		Re: why is it always an endless loop? By: J.O. Aho on Mon, 16 June 2014 18:09
		Re: why is it always an endless loop? By: Luuk on Mon, 16 June 2014 18:32
		Re: why is it always an endless loop? By: Christoph Michael Bec on Mon, 16 June 2014 19:41
		Re: why is it always an endless loop? By: Tim Streater on Mon, 16 June 2014 20:45
		Re: why is it always an endless loop? By: Denis McMahon on Mon, 16 June 2014 21:19
		Re: why is it always an endless loop? By: Evan Platt on Tue, 17 June 2014 03:39
		Re: why is it always an endless loop? By: Arno Welzel on Tue, 17 June 2014 06:20
		Re: why is it always an endless loop? By: Arno Welzel on Tue, 17 June 2014 06:22
		Re: why is it always an endless loop? By: Denis McMahon on Tue, 17 June 2014 15:13

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