asort()函數是PHP中的內置函數,用於根據值對數組進行排序。它以保持索引和值之間的關係的方式進行排序。默認情況下,它以值的升序排序。
用法:
bool asort( $array, $sorting_type )
參數:該函數接受上述和以下描述的兩個參數:
- $array:此參數指定要排序的數組。它是必填參數。
- $sorting_type:這是一個可選參數。下麵討論了不同的排序類型:
- SORT_REGULAR:$sorting_type的值為SORT_REGULAR,然後正常比較各項。
- SORT_NUMERIC:$sorting_type的值為SORT_NUMERIC,然後對項目進行數值比較。
- SORT_STRING:$sorting_type的值為SORT_STRING,然後將項目作為字符串進行比較。
- SORT_LOCALE_STRING:$sorting_type的值為SORT_STRING,然後根據當前語言環境將項目作為字符串進行比較。
返回值:如果成功,則此函數返回True;如果失敗,則返回False。
以下示例程序旨在說明PHP中的asort()函數。
程序1:
<?php
// PHP program to illustrate
// asort() function
// Input different array elements
$arr = array("0" => "Web Technology",
"1" => "Machine Learing",
"2" => "GeeksforGeeks",
"3" => "Computer Graphics",
"4" => "Videos",
"5" => "Report Bug",
"6" => "Article",
"7" => "Sudo Placement",
"8" => "SContribute",
"9" => "Reset",
"10" => "Copy",
"11" => "IDE",
"12" => "Gate Note",
);
// Implementation of asort()
asort($arr);
// for-Loop for displaying result
foreach ($arr as $key => $val) {
echo "[$key] = $val";
echo"\n";
}
?>
輸出:
[6] = Article [3] = Computer Graphics [10] = Copy [12] = Gate Note [2] = GeeksforGeeks [11] = IDE [1] = Machine Learing [5] = Report Bug [9] = Reset [8] = SContribute [7] = Sudo Placement [4] = Videos [0] = Web Technology
程序2:
<?php
// PHP program to illustrate
// asort() function
// Input different array elements
$arr = array("a" => 11,
"b" => 22,
"d" => 33,
"n" => 44,
"o" => 55,
"p" => 66,
"r" => 77,
"s" => 2,
"q" => -11,
"t" => 3,
"u" => 1000,
"z" => 1,
);
// Implementation of asort()
asort($arr);
// for-Loop for displaying result
foreach ($arr as $key => $val) {
echo "[$key] = $val";
echo"\n";
}
?>
輸出:
[q] = -11 [z] = 1 [s] = 2 [t] = 3 [a] = 11 [b] = 22 [d] = 33 [n] = 44 [o] = 55 [p] = 66 [r] = 77 [u] = 1000
相關文章:
參考: http://php.net/manual/en/function.asort.php
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注:本文由純淨天空篩選整理自jit_t大神的英文原創作品 PHP | asort() Function。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。