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這篇文章主要介紹PHP中對(duì)數(shù)組進(jìn)行排序的方法,文中介紹的非常詳細(xì),具有一定的參考價(jià)值,感興趣的小伙伴們一定要看完!
php是一個(gè)嵌套的縮寫名稱,是英文超級(jí)文本預(yù)處理語(yǔ)言,它的語(yǔ)法混合了C、Java、Perl以及php自創(chuàng)新的語(yǔ)法,主要用來做網(wǎng)站開發(fā),許多小型網(wǎng)站都用php開發(fā),因?yàn)閜hp是開源的,從而使得php經(jīng)久不衰。
PHP中數(shù)組是較為常用的數(shù)據(jù)類型,如何對(duì)數(shù)組中的數(shù)據(jù)進(jìn)行排序,以方便對(duì)數(shù)據(jù)進(jìn)行管理,本文就帶大家一起來看一看如何利用PHP內(nèi)置函數(shù)對(duì)數(shù)組進(jìn)行排序。
1.依據(jù)數(shù)組鍵值對(duì)數(shù)組排序
<?php $arr1 = array(3,1,5,2,0); sort($arr1); print_r($arr1); echo "<br>"; $arr2 = array(3,1,5,2,0); rsort($arr2); print_r($arr2); ?>
輸出:Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 [4] => 5 ) Array ( [0] => 5 [1] => 3 [2] => 2 [3] => 1 [4] => 0 )
sort()
- 對(duì)數(shù)組進(jìn)行升序排列; rsort()
- 對(duì)數(shù)組進(jìn)行降序排列
2.依據(jù)關(guān)聯(lián)數(shù)組鍵值對(duì)數(shù)組排序
<?php $fruits1 = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple"); arsort($fruits1); foreach ($fruits1 as $key => $val) { echo "$key = $val;"; } echo "<br>"; $fruits2 = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple"); asort($fruits2); foreach ($fruits2 as $key => $val) { echo "$key = $val\n"; } ?>
輸出:a = orange;d = lemon;b = banana;c = apple; c = apple b = banana d = lemon a = orange
arsort()
- 根據(jù)關(guān)聯(lián)數(shù)組的值,對(duì)數(shù)組進(jìn)行降序排列;asort()
- 根據(jù)關(guān)聯(lián)數(shù)組的值,對(duì)數(shù)組進(jìn)行升序排列
3. 根據(jù)關(guān)聯(lián)數(shù)組的鍵對(duì)數(shù)組排序
<?php $fruits1 = array("d"=>"lemon", "a"=>"orange", "b"=>"banana", "c"=>"apple"); krsort($fruits1); foreach ($fruits1 as $key => $val) { echo "$key = $val\n"; } echo "<br>"; $fruits2 = array("d"=>"lemon", "a"=>"orange", "b"=>"banana", "c"=>"apple"); ksort($fruits2); foreach ($fruits2 as $key => $val) { echo "$key = $val\n"; } ?>
輸出:d = lemon c = apple b = banana a = orange a = orange b = banana c = apple d = lemon
krsort()
- 根據(jù)關(guān)聯(lián)數(shù)組的鍵,對(duì)數(shù)組進(jìn)行降序排列;ksort()
- 根據(jù)關(guān)聯(lián)數(shù)組的鍵,對(duì)數(shù)組進(jìn)行升序排列
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