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Re: terminate a PHP script [message #172593 is a reply to message #172588]

Tue, 22 February 2011 02:08

sheldonlg
Messages: 166
Registered: September 2010

Karma:

Senior Member

On 2/21/2011 8:46 PM, The Natural Philosopher wrote:
> sheldonlg wrote:
>> On 2/21/2011 7:28 PM, The Natural Philosopher wrote:
>>> sheldonlg wrote:
>>>> On 2/21/2011 12:06 PM, Denis McMahon wrote:
>>>> > On 21/02/11 16:51, n00m wrote:
>>>> >>> No, you should not use goto! It causes more problems than it solves.
>>>> >>
>>>> >> Why on the earth???
>>>> >> "goto" can produce 10000 empty lines in no time. Like this:
>>>> >
>>>> > Because there is no structure to a program that uses goto. When it
>>>> > fails
>>>> > to work properly (and it will) it can become impossible to see how it
>>>> > arrived at the point that it fails at.
>>>> >
>>>> >> $cnt = 0;
>>>> >>
>>>> >> mm:
>>>> >> ++$cnt;
>>>> >> echo '<BR>';
>>>> >> if ($cnt< 10000) goto mm;
>>>> >
>>>> > Your goto method uses 5 lines. A while loop uses 2:
>>>> >
>>>> > $i = 10000;
>>>> > while ($i--) echo "<br>\n";
>>>> >
>>>> > and a for loop only 1:
>>>> >
>>>> > for ($cnt = 10000; $cnt--;) echo "<br>\n";
>>>> >
>>>> > or:
>>>> >
>>>> > for ($cnt = 0; $cnt< 10000; $cnt++) echo "<br>\n";
>>>> >
>>>> > Rgds
>>>> >
>>>> > Denis McMahon
>>>>
>>>> I fully agree about gotos. There is NO need for them. What is wrong
>>>> with this pseudocode?
>>>>
>>>> ===========
>>>> if (passes test for failure condition) {
>>>> ... all the rest of the code for success that is already there
>>>> --- except the footer
>>>> }
>>>>
>>>> footer stuff.
>>>> ==========
>>>>
>>>> All it does is add two lines (the if test and a closing brace) and one
>>>> level of indentation, and it does what the OP wants.
>>>>
>>>> Since seeing the if-then-else first appear in Fortran circa 1980, I
>>>> have never used a single goto in any language in which I have coded.
>>>>
>>> Well that's cos you never wrote Assembler :-)
>>>
>>
>> Correct! That was before even my time. :-) By the time I got into it
>> with Fortran IV, the compiled code looked an awful lot like Assembly
>> code. Machines should be labor saving devices. That was what the
>> compiler was for. Besides, it is much easier to debug and maintain a
>> language that is readable, and not like spaghetti code (gotos and jumps).
>>
> The art of writing assembler, is to MAKE it readable DESPITE the language.
>
> And, if you wanted to write hardware code in the 80's for them new
> fangled Micro Processors, that mate, was all there was!

I understand that. I also understand that this is three decades later.
Do you still wear leisure suits and sport an Afro or go to discos?

--
Shelly

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[Message index]

		terminate a PHP script By: bob on Sat, 19 February 2011 21:56
		Re: terminate a PHP script By: Jerry Stuckle on Sat, 19 February 2011 21:59
		Re: terminate a PHP script By: The Natural Philosoph on Sun, 20 February 2011 00:38
		Re: terminate a PHP script By: Jerry Stuckle on Sun, 20 February 2011 01:04
		Re: terminate a PHP script By: me on Sun, 20 February 2011 02:07
		Re: terminate a PHP script By: Twayne on Thu, 24 February 2011 01:59
		Re: terminate a PHP script By: Jerry Stuckle on Thu, 24 February 2011 04:04
		Re: terminate a PHP script By: The Natural Philosoph on Thu, 24 February 2011 12:51
		Re: terminate a PHP script By: Twayne on Thu, 24 February 2011 17:26
		Re: terminate a PHP script By: The Natural Philosoph on Thu, 24 February 2011 17:51
		Re: terminate a PHP script By: Thomas 'PointedEars' on Sun, 20 February 2011 09:47
		Re: terminate a PHP script By: me on Sun, 20 February 2011 15:05
		Re: terminate a PHP script By: n00m on Mon, 21 February 2011 12:53
		Re: terminate a PHP script By: Jerry Stuckle on Mon, 21 February 2011 13:08
		Re: terminate a PHP script By: n00m on Mon, 21 February 2011 16:51
		Re: terminate a PHP script By: Denis McMahon on Mon, 21 February 2011 17:06
		Re: terminate a PHP script By: sheldonlg on Mon, 21 February 2011 17:23
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 00:28
		Re: terminate a PHP script By: sheldonlg on Tue, 22 February 2011 00:52
		Re: terminate a PHP script By: Jerry Stuckle on Tue, 22 February 2011 01:00
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 01:46
		Re: terminate a PHP script By: sheldonlg on Tue, 22 February 2011 02:08
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 03:55
		Re: terminate a PHP script By: sheldonlg on Tue, 22 February 2011 12:06
		Re: terminate a PHP script By: The Natural Philosoph on Wed, 23 February 2011 08:18
		Re: terminate a PHP script By: Tim Streater on Tue, 22 February 2011 17:18
		Re: terminate a PHP script By: sheldonlg on Tue, 22 February 2011 17:26
		Re: terminate a PHP script By: The Natural Philosoph on Wed, 23 February 2011 08:21
		Re: terminate a PHP script By: Jerry Stuckle on Mon, 21 February 2011 17:37
		Re: terminate a PHP script By: sheldonlg on Mon, 21 February 2011 17:53
		Re: terminate a PHP script By: n00m on Mon, 21 February 2011 18:01
		Re: terminate a PHP script By: Peter H. Coffin on Mon, 21 February 2011 19:07
		Re: terminate a PHP script By: Curtis Dyer on Tue, 22 February 2011 22:59
		Re: terminate a PHP script By: Tim Streater on Mon, 21 February 2011 18:04
		Re: terminate a PHP script By: sheldonlg on Mon, 21 February 2011 18:32
		Re: terminate a PHP script By: Tim Streater on Mon, 21 February 2011 18:50
		Re: terminate a PHP script By: Peter H. Coffin on Mon, 21 February 2011 19:09
		Re: terminate a PHP script By: Tim Streater on Mon, 21 February 2011 19:44
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 01:16
		Re: terminate a PHP script By: n00m on Tue, 22 February 2011 01:28
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 01:47
		Re: terminate a PHP script By: sheldonlg on Tue, 22 February 2011 02:10
		Re: terminate a PHP script By: n00m on Tue, 22 February 2011 02:45
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 01:15
		Re: terminate a PHP script By: sheldonlg on Tue, 22 February 2011 01:53
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 03:16
		Re: terminate a PHP script By: Tim Streater on Tue, 22 February 2011 17:01
		Re: terminate a PHP script By: sheldonlg on Tue, 22 February 2011 17:05
		Re: terminate a PHP script By: sheldonlg on Tue, 22 February 2011 17:07
		Re: terminate a PHP script By: Tim Streater on Tue, 22 February 2011 16:59
		Re: terminate a PHP script By: The Natural Philosoph on Wed, 23 February 2011 08:19
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 01:12
		Re: terminate a PHP script By: Tim Streater on Tue, 22 February 2011 17:04
		Re: terminate a PHP script By: n00m on Mon, 21 February 2011 18:54
		Re: terminate a PHP script By: Jerry Stuckle on Mon, 21 February 2011 19:39
		Re: terminate a PHP script By: sheldonlg on Mon, 21 February 2011 21:03
		Re: terminate a PHP script By: sheldonlg on Mon, 21 February 2011 21:06
		Re: terminate a PHP script By: n00m on Mon, 21 February 2011 21:46
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 01:24
		Re: terminate a PHP script By: sheldonlg on Tue, 22 February 2011 02:04
		Re: terminate a PHP script By: Jerry Stuckle on Tue, 22 February 2011 02:09
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 03:38
		Re: terminate a PHP script By: sheldonlg on Tue, 22 February 2011 11:54
		Re: terminate a PHP script By: The Natural Philosoph on Wed, 23 February 2011 08:15
		Re: terminate a PHP script By: sheldonlg on Wed, 23 February 2011 13:05
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 01:23
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 01:06
		Re: terminate a PHP script By: The Natural Philosoph on Tue, 22 February 2011 00:58

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