|
PODRĘCZNIK PHP 5.x, 4.x, 3.x - częściowo spolszczony / źródło: www.php.net
[Spis]
[A]
[B]
[C]
[D]
[E]
[F]
[G]
[H]
[I]
[J]
[K]
[L]
[M]
[N]
[O]
[P]
[Q]
[R]
[S]
[T]
[U]
[V]
[X]
[W]
[Z]
asort (PHP 3, PHP 4, PHP 5) asort -- Posortuj tablicę zachowując skojarzenia kluczy Opisbool asort ( array &tablica [, int flagi] )
Funkcja ta sortuje tablicę w taki sposób, że klucze zachowują przypisanie
do odpowiednich wartości. Ten sposób sortowania jest używany głównie przy
sortowaniu tablic asocjacyjnych, gdzie znacząca jest kolejność
występowania elementów w tablicy.
Zwraca TRUE w przypadku sukcesu, FALSE w
przypadku porażki.
Przykład 1. Przykład użycia asort() |
<?php
$owoce = array ("d"=>"cytryna, "a"=>"pomarańcza", "b"=>"banan", "c"=>"jabłko");
arsort ($owoce);
reset ($owoce);
while (list ($key, $val) = each ($owoce)) {
echo "$key = $valn";
}
?>
|
Powyższy przykład wyświetli: b = banan
d = cytryna
c = jabłko
a = pomarańcza |
|
Owoce zostały posortowane w porządku alfabetycznym a
skojarzenia kluczy dla każdego elementu zostały zachowane.
Możesz zmodyfikować zachowanie sortowania przez użycie opcjonalnego
parametru flagi. Aby uzyskać szczegóły zobacz
sort().
Patrz także: arsort(), rsort(),
ksort() i sort().
User Contributed Notesrojaro
24-Jun-2004 04:38
Advanced sort array by second index function, which produces ascending (default) or descending output and uses optionally natural case insensitive sorting (which can be optionally case sensitive as well).
Only the first two arguments are required.
<?php
function sabsi ($array, $index, $order='asc', $natsort=FALSE, $case_sensitive=FALSE) {
if(is_array($array) && count($array)>0) {
foreach(array_keys($array) as $key) $temp[$key]=$array[$key][$index];
if(!$natsort) ($order=='asc')? asort($temp) : arsort($temp);
else {
($case_sensitive)? natsort($temp) : natcasesort($temp);
if($order!='asc') $temp=array_reverse($temp,TRUE);
}
foreach(array_keys($temp) as $key) (is_numeric($key))? $sorted[]=$array[$key] : $sorted[$key]=$array[$key];
return $sorted;
}
return $array;
}
?>
csaba at alum dot mit dot edu
23-Jun-2004 01:47
If you have a pair of arrays which have a one to one association (examples: spouses, first to last name, SSN to name), when you sort one, you might wish to sort the other in the same way to maintain the correlation. This example illustrates a way:
<?php
$aMen = array('Fred', 'Bob', 'Tim', 'John', 'Bill');
$aPartner = array('Sue', 'Mary', 'Ann', 'Cathy', 'Nancy');
asort($aMen); $aWomen = array_keys($aMen); foreach ($aWomen as $idx => &$name) $name=$aPartner[$name];
$aMen = array_merge($aMen); ?>
Csaba Gabor
KOmaSHOOTER at gmx dot de
21-May-2003 02:52
here another version from acecream multisorting for arrays :)
<?php
function array_sort_multi2($array, $key,$key2)
{
for ($i = 0; $i < sizeof($array); $i++) {
if(! empty($array[$i][$key][$key2])){
$sort_values[$i] = $array[$i][$key][$key2];
}else{
$sort_values[$i] = $array[$i];
}
}
asort ($sort_values);
reset ($sort_values);
while (list ($arr_keys, $arr_values) = each ($sort_values)) {
$sorted_arr[] = $array[$arr_keys];
}
return $sorted_arr;
}
?>
spectre at hellfish dot NOSPAM dot org
28-Apr-2003 06:54
that works nicely, tho it breaks the result-array up if one or more of arrays indexes are deleted before sorting. this one should fix it up:
change:
for ($i = 0; $i < sizeof($array); $i++) {
to:
foreach ($array as $i => $k) {
acecream
23-Apr-2003 01:02
my version of sorting multi dimensional array
<?php
function array_sort($array, $key)
{
for ($i = 0; $i < sizeof($array); $i++) {
$sort_values[$i] = $array[$i][$key];
}
asort ($sort_values);
reset ($sort_values);
while (list ($arr_key, $arr_val) = each ($sort_values)) {
$sorted_arr[] = $array[$arr_key];
}
return $sorted_arr;
}
?>
mbevan at marginsoftware dot com
03-Dec-2002 10:25
Nevermind... use my last note as a quick tip: if you wish to keep the keys, use asort() and arsort() in place of sort() and rsort().
01-Aug-2002 03:48
Sorry, my last post had a typo:
// unnecessary backslashes break create_function, oops.
if ( is_string($var) ) $var = "\'$var\'";
//it should be:
if ( is_string($var) ) $var = "'$var'";
-- FIXED and TESTED -- :)
Similar to above but for an array of arrays instead of an array of objects.
<?php
function aasort($x,$var,$cmp='strcasecmp'){
if ( is_string($var) ) $var = "'$var'";
uasort($x,
create_function('$a,$b',
'return '.$cmp.'( $a['.$var.'],$b['.$var.']);')
);
return $x;
}
?>
phzzzt .a.t. acm .d.o.t. org
01-Aug-2002 03:32
Similar to above but for an array of arrays instead of an array of objects.
<?php
function aasort($x,$var,$cmp='strcasecmp'){
if ( is_string($var) ) $var = "\'$var\'";
uasort($x,
create_function('$a,$b',
'return '.$cmp.'( $a['.$var.'],$b['.$var.']);')
);
return $x;
}
?>
salchicha at cable dot net dot co
03-Apr-2002 11:23
Here's one I whipped up to allow you to sort an array of a specific class by a member or function:
<?php
function casort($arr, $var) {
$tarr = array();
$rarr = array();
for($i = 0; $i < count($arr); $i++) {
$element = $arr[$i];
$tarr[] = strtolower($element->{$var});
}
reset($tarr);
asort($tarr);
$karr = array_keys($tarr);
for($i = 0; $i < count($tarr); $i++) {
$rarr[] = $arr[intval($karr[$i])];
}
return $rarr;
}
?>
It works very well. For example, I have a Room class with members title, isActive(), date, etc. I can sort an array by casort($rooms, "title") or casort($rooms, "isActive()") and it'll work.
rcwang at cmu dot edu
03-Mar-2002 02:42
Here's my version of sorting multi-dimensional array by 2nd index.
Feel free to change the code to suit your needs.
<?php
function aSortBySecondIndex($multiArray, $secondIndex) {
while (list($firstIndex, ) = each($multiArray))
$indexMap[$firstIndex] = $multiArray[$firstIndex][$secondIndex];
asort($indexMap);
while (list($firstIndex, ) = each($indexMap))
if (is_numeric($firstIndex))
$sortedArray[] = $multiArray[$firstIndex];
else $sortedArray[$firstIndex] = $multiArray[$firstIndex];
return $sortedArray;
}
?>
markus at runout dot at
29-Nov-2001 09:37
for sorting CASEINSENSITIVE try
natcasesort()
there's little difference to sort,
but maybe that doesn't matter for you.
martin dot edelius at spirex dot se
28-May-2001 07:27
In the 'asortbyindex' function above there's a $ sign missing from a variable in one of the for loops:
for ($iteration = 0; $iteration < $lastiteration; iteration++)
should be:
for ($iteration = 0; $iteration < $lastiteration; $iteration++)
freeman at generalresources dot com
04-May-2001 01:51
The asortbyindex($sortarray, $index) looks like sort not asort. The key of the $sortarray was changed.
odeen at gmx dot de
30-Aug-2000 05:05
hi
the 2d arry sort works good for me,
but you should use
strtolower()
for the right alphabetical order, like this:for ($index = 0; $index < strlen ($s1); $index++) {
/**
** $s1 comes after $s2
**/
if (strtolower($s1[$index]) > strtolower($s2[$index])) return ($order);
/**
** $s1 comes before $s2
**/
if (strtolower($s1[$index]) < strtolower($s2[$index])) return (1 - $order);
}
have fun olli
sweetland at whoadammit dot com
15-Aug-2000 09:02
Here's a little routine I whipped up to sort multi-dimensional arrays:
<?php
function comesafter ($s1, $s2) {
$order = 1;
if (strlen ($s1) > strlen ($s2)) {
$temp = $s1;
$s1 = $s2;
$s2 = $temp;
$order = 0;
}
for ($index = 0; $index < strlen ($s1); $index++) {
if ($s1[$index] > $s2[$index]) return ($order);
if ($s1[$index] < $s2[$index]) return (1 - $order);
}
return ($order);
}
function asortbyindex ($sortarray, $index) {
$lastindex = count ($sortarray) - 1;
for ($subindex = 0; $subindex < $lastindex; $subindex++) {
$lastiteration = $lastindex - $subindex;
for ($iteration = 0; $iteration < $lastiteration; iteration++) {
$nextchar = 0;
if (comesafter ($sortarray[$iteration][$index], $sortarray[$iteration + 1][$index])) {
$temp = $sortarray[$iteration];
$sortarray[$iteration] = $sortarray[$iteration + 1];
$sortarray[$iteration + 1] = $temp;
}
}
}
return ($sortarray);
}
?>
It's a bit long with all the comments, but I hope it helps.
bwuhlman at tallships dot ca
03-Aug-2000 12:01
Well, actually, asort has *two* annoying features.
It works perfectly well sorting hashes (or associative arrays, as you might have it), but doggedly refuses to sort regular arrays maintaining index assocation. Kind've makes sense, but the docs don't explicitly say you can't do it.
Urgggh.
jacko at kring dot co dot uk
25-Feb-2000 08:26
asort has one anoying feature, it ignores any default or implicit order in the data. i.e. if two elements of an array contain "banana" then it is not garanteed that the first will still be the first after the sort.
This makes the Burrows-Wheeler block sort a bit of a pain to impliment, with a trailing string having to be appended to all strings before sorting, and removed after sorting. To maintain the so called "banana" order.
otterley.at.dynamine.net
14-Oct-1999 10:34
This function is the equivalent of sort values %hash in Perl.
| 
