note 106900 added to function.sort

unless you specify the second argument, "regular" comparisons will be used. I quote from the page on comparison operators: "If you compare a number with a string or the comparison involves numerical strings, then each string is converted to a number and the comparison performed numerically." What this means is that "10" < "1a", and "1a" < "2", but "10" > "2". In other words, regular PHP string comparisons are not transitive. This implies that the output of sort() can in rare cases depend on the order of the input array: <?php function echo_sorted($a) { echo "{$a[0]} {$a[1]} {$a[2]}"; sort($a); echo " => {$a[0]} {$a[1]} {$a[2]}\n"; } // on PHP 5.2.6: echo_sorted(array( "10", "1a", "2")); // => 10 1a 2 echo_sorted(array( "10", "2", "1a")); // => 1a 2 10 echo_sorted(array( "1a", "10", "2")); // => 2 10 1a echo_sorted(array( "1a", "2", "10")); // => 1a 2 10 echo_sorted(array( "2", "10", "1a")); // => 2 10 1a echo_sorted(array( "2", "1a", "10")); // => 10 1a 2 ?> ---- Server IP: 81.88.49.17 Probable Submitter: 93.41.205.102 ---- Manual Page -- http://www.php.net/manual/en/function.sort.php Edit -- https://master.php.net/note/edit/106900 Del: integrated -- https://master.php.net/note/delete/106900/integrated Del: useless -- https://master.php.net/note/delete/106900/useless Del: bad code -- https://master.php.net/note/delete/106900/bad+code Del: spam -- https://master.php.net/note/delete/106900/spam Del: non-english -- https://master.php.net/note/delete/106900/non-english Del: in docs -- https://master.php.net/note/delete/106900/in+docs Del: other reasons-- https://master.php.net/note/delete/106900 Reject -- https://master.php.net/note/reject/106900 Search -- https://master.php.net/manage/user-notes.php