按鍵排序關聯數組

我想按鍵排序關聯數組。我使用ksort函數，但返回1而不是array.Below是我的代碼。按鍵排序關聯數組

$states=array("DD"=>"Daman and Diu", "LD"=>"Lakshdweep", "DN"=>"Dadra 
and nagar haveli", "AN"=>"Andaman and Nicobar island", "SK"=>"Sikkim", 
"MZ"=>"Mizoram", "GA"=>"Goa", "PY"=>"Puduchery", "CH"=>"Chandigarh", 
"ML"=>"Meghalaya", "AR"=>"Arunachal Pradesh", "TR"=>"Tripura", 
"HP"=>"Himanchal Pradesh", "NL"=>"Nagaland", "PB"=>"Punjab", 
"CG"=>"Chattisgarh", "JK"=>"Jammu and Kashmir", "UA"=>"Uttrakhand", 
"HR"=>"Haryana", "JH"=>"Jharkhand", "KL"=>"Kerela", "MN"=>"Manipur" , 
"AS"=>"Assam", "RJ"=>"Rajasthan", "MP"=>"Madhya Pradesh", 
"KA"=>"Karnataka", "BR"=>"Bihar", "OR"=>"Orissa", "GJ"=>"Gujrat", 
"AP"=>"Andhra Pradesh", "TN"=>"TamilNadu", "DL"=>"Delhi", 
"MH"=>"Maharastra", "WB"=>"WestBengal", "UP"=>"UttarPradesh", 
); 


$states = ksort($states); 
print_r($states);

輸出我得到的是：1

我想數組，而不是1

來源

2012-12-20 Bhuvnesh Gupta

不知道函數應該如何工作：閱讀[在手冊中]（http://php.net/ksort）！ –

'ksort（$ states）''而不是'$ states = ksort（$ states）' –

@ÁlvaroG.Vicario好的我知道了 –

不要reaffect ksort你的陣列的結果，ksort需要一個數組引用：

$states=array(
"DD"=>"Daman and Diu", "LD"=>"Lakshdweep", "DN"=>"Dadra and nagar haveli", "AN"=>"Andaman and Nicobar island", "SK"=>"Sikkim", "MZ"=>"Mizoram", "GA"=>"Goa", "PY"=>"Puduchery", "CH"=>"Chandigarh", "ML"=>"Meghalaya", "AR"=>"Arunachal Pradesh", "TR"=>"Tripura", "HP"=>"Himanchal Pradesh", "NL"=>"Nagaland", "PB"=>"Punjab", "CG"=>"Chattisgarh", "JK"=>"Jammu and Kashmir", "UA"=>"Uttrakhand", "HR"=>"Haryana", "JH"=>"Jharkhand", "KL"=>"Kerela", "MN"=>"Manipur" , "AS"=>"Assam", "RJ"=>"Rajasthan", "MP"=>"Madhya Pradesh", "KA"=>"Karnataka", "BR"=>"Bihar", "OR"=>"Orissa", "GJ"=>"Gujrat", "AP"=>"Andhra Pradesh", "TN"=>"TamilNadu", "DL"=>"Delhi", "MH"=>"Maharastra", "WB"=>"WestBengal", "UP"=>"UttarPradesh" 
    ); 

ksort($states); 
print_r($states);

更多信息有關ksort here

來源

2012-12-20 11:10:08 Oussama

好的謝謝你的回答。 –

不要做$states = ksort($states);。
做ksort($states);。

*排序函數直接改變數組。

來源

2012-12-20 11:10:04 lolesque

使用ksort（）通過數組排序的鍵

不分配結果。嘗試在排序後按以下方式打印：

ksort($states); 
print_r($states);

來源

2012-12-20 11:10:40

按鍵排序關聯數組

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