正如标题所示,我想在 php 中按值按字母顺序对数组进行排序。
$arr = array(
'k' => 'pig',
'e' => 'dog'
)
会变成
$arr = array(
'e' => 'dog',
'k' => 'pig'
)
有什么想法吗?
编辑:这是我想要排序的实际数组。
Array ( [0] => Newtown [1] => Montgomery [2] => Welshpool [6] => Llanfyllin [7] => Llansanffraid [8] => Llanymynech [9] => Oswestry [14] => Oswestry Town Service [15] => Aston Way [16] => College Road [17] => Shrewsbury [18] => Royal Shrewsbury Hospital [19] => Worthen [20] => Brockton [22] => Cefn Blodwell [23] => Treflach [24] => Trefonen [25] => Morda [26] => Marches School [28] => North Shropshire College [37] => Park Hall [38] => Gobowen [39] => St Martins [40] => Ifton Heath [42] => Guilsfield [43] => Four Crosses [45] => Pant [46] => Llynclys [49] => Oswestry Town Service Schools [51] => Woodside School [56] => Whittington [57] => Babbinswood [58] => Hindford [59] => Ellesmere [62] => Forden [63] => Kingswood Cock Hotel [65] => Coleg Powys [85] => Borfa Green [86] => Bryn Siriol [87] => Maesydre School [92] => Crew Green [93] => Ford [104] => Llanrhaeadr [106] => Meifod [114] => Llangynog [116] => Llangedwyn [119] => Porthywaen [132] => Llanfair Caereinion [133] => Pontrobet [136] => Dolanog [141] => Llansilin [144] => Abermule [145] => Llandyssil [146] => Carhowel [149] => Cefn Coch [150] => Tregynon [151] => Manafon [152] => Berriew [157] => Bettws Cedewain [158] => Newtown High School [160] => Newtown Coleg Powys [173] => Llanerfyl [174] => Machynlleth [175] => Talybont [176] => Aberystwyth [183] => Bala [184] => Llanrwst [185] => Llandudno [188] => Middletown [196] => Llanidloes [202] => Wrexham [203] => Rhayader )
你想要 php 函数“asort”:
http://php.net/manual/en/function.asort.php
它对数组进行排序,维护索引关联。
编辑:我刚刚注意到您正在使用标准数组(非关联)。如果您不介意保留索引关联,请使用 sort():
注意 sort() 对数组进行操作就地,所以你只需要调用
sort($a);
doSomething($a);
这行不通;
$a = sort($a);
doSomething($a);
sort()
。这将给出一个新数组,其数字键从 0
开始。asort()
。另请参阅 PHP 中排序函数比较表。
另请注意,对于包含以大写和小写字母开头的字符串的数组,
sort()
的默认行为并不那么“直观”。默认情况下,先对大写字母开头的字符串进行排序,然后对小写字母开头的字符串进行排序。如果您想按字母顺序排列数组而不考虑大小写,则需要传递标志 SORT_NATURAL | SORT_FLAG_CASE
,如 PHP 文档中所述。例如:
sort($array, SORT_NATURAL | SORT_FLAG_CASE);
array_multisort($arr, SORT_DESC);