RE: [PHP] sortind arrays

On 25 January 2007 10:55, Alexander Sagen wrote: > Roman Neuhauser skrev: > > # kalles@operamail.com / 2007-01-25 08:12:14 +0200: > > > How can I sort an array like this so that it would be ASC ordered > > > by the [1] key in subarrays? I need to maintain only the subarray > > > key - value pairs. (Do I make sense?) > > > > > > Array > > > ( > > > [0] => Array > > > ( > > > [0] => Logo > > > [1] => NameC > > > [2] => Home > > > [3] => url > > > ) > > > > > > [1] => Array > > > ( > > > [0] => Logo > > > [1] => NameA > > > [2] => Home > > > [3] => url > > > ) > > > > > > [2] => Array > > > ( > > > [0] => Logo > > > [1] => NameG > > > [2] => Home > > > [3] => url > > > ) > > > } > > > > http://www.php.net/usort > > > I think usort would be a bit overkill, he would probably find himself > making a function to sort and maintain the association between the > subarrays. Go with array_multisort, it would be a one-liner. What total tosh! array_multisort() won't handle this one -- usort() is correct. The only function needed is a (one-liner!) custom comparison to compare individual [1] elements -- usort() takes care of all the rest: function compare_1($a, $b) { return strcmp($a[1], $b[1]); } usort($array, 'compare_1'); Or even, for single use, collapse it to: usort($array, create_function('$a,$b', 'return strcmp($a[1], $b[1]);'); Cheers! Mike --------------------------------------------------------------------- Mike Ford, Electronic Information Services Adviser, Learning Support Services, Learning & Information Services, JG125, James Graham Building, Leeds Metropolitan University, Headingley Campus, LEEDS, LS6 3QS, United Kingdom Email: m.ford@leedsmet.ac.uk Tel: +44 113 283 2600 extn 4730 Fax: +44 113 283 3211 To view the terms under which this email is distributed, please go to http://disclaimer.leedsmet.ac.uk/email.htm