Sorting an array.

Barrucadu · 09-01-2007, 03:52 AM

I've got an array in this format:

PHP Code:

  $array['text'] = number; 

????: NamePros.com http://www.namepros.com/programming/368875-resolved-sorting-an-array.html

How would I sort by the numbers, not the text? I've tried:

PHP Code:

  $tmp = array();

foreach($array as $key => $var){

     $tmp[$var] = $key;

}

$array = ksort($tmp);

But it dosn't work.

Peter · 09-01-2007, 05:09 AM

The following demonstrated how to do it. I have used print_r to show the order before and after the sorting.

PHP Code:

  <?php

????: NamePros.com http://www.namepros.com/showthread.php?t=368875
$array = array('one'=>'1','three'=>'3','seven'=>'7','two'=>'2');

print_r($array);

asort($array);

print_r($array);

?>

The method of using ksort that you was using will not work in ordering the values in the array as ksort is used for ordering the key (where you have the text) ksort

Barrucadu · 09-01-2007, 06:14 AM

Nevermind, stupid mistake.

Peter · 09-01-2007, 06:18 AM

yeah I see what you have done. The asort returns 1 because it was successful in sorting the array.

Barrucadu · 09-01-2007, 06:19 AM

Still not working

PHP Code:

  echo "<pre>UNSORTED:\r\n";

????: NamePros.com http://www.namepros.com/showthread.php?t=368875
print_r($thing);

echo "\r\nSORTED:\r\n";

asort($thing, SORT_NUMERIC);

print_r($thing);

echo "</pre>";

Outputs:

Code:

<pre>UNSORTED:
Array
(
    [yahoo] => 4
    [opera 9.22] => 9
    [internet explorer 7.0] => 12
    [internet explorer 6.0] => 29
)

SORTED:
Array
(
    [yahoo] => 4
    [opera 9.22] => 9
    [internet explorer 7.0] => 12
    [internet explorer 6.0] => 29
)
</pre>

Peter · 09-01-2007, 06:25 AM

can you post the full code and the expected output.

Looking at what you just posted I might be misunderstanding what you want. The array is already sorted by the values.

mvl · 09-01-2007, 06:26 AM

Originally Posted by Mikor

Still not working

PHP Code:

  echo "<pre>UNSORTED:\r\n";

print_r($thing);

echo "\r\nSORTED:\r\n";

asort($thing, SORT_NUMERIC);

print_r($thing);

echo "</pre>";

Outputs:

Code:

<pre>UNSORTED:
Array
(
    [yahoo] => 4
    [opera 9.22] => 9
    [internet explorer 7.0] => 12
    [internet explorer 6.0] => 29
)

SORTED:
Array
(
    [yahoo] => 4
    [opera 9.22] => 9
    [internet explorer 7.0] => 12
    [internet explorer 6.0] => 29
)
</pre>

The array looks sorted to me, although it already was sorted before the asort. How did expect it to look?

Barrucadu · 09-01-2007, 06:46 AM

Got it working now, I needed to use arsort. (The fact that it was sorted before was a coincidence, it probably won't always be)

Peter · 09-01-2007, 07:08 AM

ahh so you wanted the numbers in reverse order i.e. highest first.

09-01-2007, 03:52 AM	THREAD STARTER #1 (permalink)
Barrucadu Senior Member Join Date: Aug 2005 Location: East Yorkshire, England Posts: 2,689 Follow @barrucadu	Sorting an array. I've got an array in this format: PHP Code: `$array['text'] = number; ????: NamePros.com http://www.namepros.com/programming/368875-resolved-sorting-an-array.html` How would I sort by the numbers, not the text? I've tried: PHP Code: `$tmp = array(); foreach($array as $key => $var){ $tmp[$var] = $key; } $array = ksort($tmp);` But it dosn't work. __________________ Website \| Blog Arch Hurd developer; GNU Webmaster; FSF member #8385

09-01-2007, 05:09 AM	#2 (permalink)
Peter NamePros Expert Join Date: Nov 2003 Location: Scotland Posts: 5,069	The following demonstrated how to do it. I have used print_r to show the order before and after the sorting. PHP Code: `<?php ????: NamePros.com http://www.namepros.com/showthread.php?t=368875 $array = array('one'=>'1','three'=>'3','seven'=>'7','two'=>'2'); print_r($array); asort($array); print_r($array); ?>` The method of using ksort that you was using will not work in ordering the values in the array as ksort is used for ordering the key (where you have the text) ksort __________________ Manage your portfolio using my new Domain Portfolio Management script. Securing Your Domain Name From Theft Last edited by peter@flexiwebhost; 09-01-2007 at 05:21 AM.

09-01-2007, 06:14 AM	THREAD STARTER #3 (permalink)
Barrucadu Senior Member Join Date: Aug 2005 Location: East Yorkshire, England Posts: 2,689 Follow @barrucadu	Nevermind, stupid mistake. __________________ Website \| Blog Arch Hurd developer; GNU Webmaster; FSF member #8385 Last edited by Mikor; 09-01-2007 at 06:18 AM. Reason: Oops!

09-01-2007, 06:18 AM	#4 (permalink)
Peter NamePros Expert Join Date: Nov 2003 Location: Scotland Posts: 5,069	yeah I see what you have done. The asort returns 1 because it was successful in sorting the array. __________________ Manage your portfolio using my new Domain Portfolio Management script. Securing Your Domain Name From Theft

09-01-2007, 06:19 AM	THREAD STARTER #5 (permalink)
Barrucadu Senior Member Join Date: Aug 2005 Location: East Yorkshire, England Posts: 2,689 Follow @barrucadu	Still not working PHP Code: `echo "<pre>UNSORTED:\r\n"; ????: NamePros.com http://www.namepros.com/showthread.php?t=368875 print_r($thing); echo "\r\nSORTED:\r\n"; asort($thing, SORT_NUMERIC); print_r($thing); echo "</pre>";` Outputs: Code: <pre>UNSORTED: Array ( [yahoo] => 4 [opera 9.22] => 9 [internet explorer 7.0] => 12 [internet explorer 6.0] => 29 ) SORTED: Array ( [yahoo] => 4 [opera 9.22] => 9 [internet explorer 7.0] => 12 [internet explorer 6.0] => 29 ) </pre> __________________ Website \| Blog Arch Hurd developer; GNU Webmaster; FSF member #8385

09-01-2007, 06:25 AM	#6 (permalink)
Peter NamePros Expert Join Date: Nov 2003 Location: Scotland Posts: 5,069	can you post the full code and the expected output. Looking at what you just posted I might be misunderstanding what you want. The array is already sorted by the values. __________________ Manage your portfolio using my new Domain Portfolio Management script. Securing Your Domain Name From Theft

09-01-2007, 06:46 AM	THREAD STARTER #8 (permalink)
Barrucadu Senior Member Join Date: Aug 2005 Location: East Yorkshire, England Posts: 2,689 Follow @barrucadu	Got it working now, I needed to use arsort. (The fact that it was sorted before was a coincidence, it probably won't always be) __________________ Website \| Blog Arch Hurd developer; GNU Webmaster; FSF member #8385

09-01-2007, 07:08 AM	#9 (permalink)
Peter NamePros Expert Join Date: Nov 2003 Location: Scotland Posts: 5,069	ahh so you wanted the numbers in reverse order i.e. highest first. __________________ Manage your portfolio using my new Domain Portfolio Management script. Securing Your Domain Name From Theft

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