本文實例總結了php常用數組array函數。分享給大家供大家參考，具體如下：
array_combine
功能：用一個數組的值作為新數組的鍵名，另一個數組的值作為新數組的值
案例：
|
1
2
3
4
5
6
7
8
|
<?php$a = array("one","two","three");$b = array("一","二","三");$c = array_combine($a,$b);print_r($c);/**結果*Array ( [one] => 一 [two] => 二 [three] => 三 )*/ |
array_chunk
功能：拆分數組成多個數組
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
<?php$input_array = array("a"=>"apple","b"=>"blue","c","d","e");echo "<pre>";print_r(array_chunk($input_array, 2));print_r(array_chunk($input_array, 2,True));echo "</pre>";/**結果Array( [0] => Array ( [0] => apple [1] => blue ) [1] => Array ( [0] => c [1] => d ) [2] => Array ( [0] => e ))Array( [0] => Array ( [a] => apple [b] => blue ) [1] => Array ( [0] => c [1] => d ) [2] => Array ( [2] => e ))*/ |
array_count_values
功能：統計數組中值出現的次數
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
|
<?php$input_array = array("a"=>"apple","b"=>"blue","c","d","e");echo "<pre>";print_r(array_count_values($input_array));echo "</pre>";/**結果Array( [apple] => 1 [blue] => 1 [c] => 1 [d] => 1 [e] => 1)*/ |
array_diff
功能：第一個數組中去掉第二個數組中有的數據，返回剩下的內容作為結果
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
<?php$array1 = array("a"=>"apple","b"=>"blue","c","d","e");$array2 = array("apple","c","d","f");$result = array_diff($array1, $array2);$result2 = array_diff($array2, $array1);echo "<pre>";print_r($result);//數組1中去掉數組2中剩下的print_r($result2);//數組2中去掉數組1中剩下的echo "</pre>";/**結果Array( [b] => blue [2] => e)Array( [3] => f)*/ |
array_map
功能：將回調函數執行到數組中
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
<?php//定義回調函數function cube($n){ return ($n*$n*$n);}$a = array(1,2,3,4,5);$b = array_map("cube",$a);echo "<pre>";print_r($b);echo "</pre>";/**結果Array( [0] => 1 [1] => 8 [2] => 27 [3] => 64 [4] => 125)*/ |
array_merge
功能：合并一個或多個數組
說明：如果后面有鍵名相同的會覆蓋掉前面的內容，鍵名為數字的會添加到后面
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
<?php$array1 = array("color"=>"red",2,4);$array2 = array("a","b","color"=>"green","shape"=>"trapezoid",4);$result1 = array_merge($array1,$array2);$result2 = array_merge_recursive($array1,$array2);echo "<pre>";print_r($result1);print_r($result2);echo "</pre>";/**結果Array( [color] => green [0] => 2 [1] => 4 [2] => a [3] => b [shape] => trapezoid [4] => 4)Array( [color] => Array ( [0] => red [1] => green ) [0] => 2 [1] => 4 [2] => a [3] => b [shape] => trapezoid [4] => 4)*/ |
array_pop
功能：剔除數組最后一個元素，返回被剔除的元素內容
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
|
<?php$stack = array("orange","banana","apple","1");$last = array_pop($stack);echo "<pre>";print_r($stack);print_r($last);echo "</pre>";/**結果Array( [0] => orange [1] => banana [2] => apple)1*/ |
array_push
功能：將一個多個單元壓入數組末尾，返回之后的數組個數
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
<?php$stack = array("orange","banana");$count = array_push($stack,"apple","red","blue");echo "<pre>";print_r($stack);print_r($count);echo "</pre>";/**結果Array( [0] => orange [1] => banana [2] => apple [3] => red [4] => blue)5*/ |
array_rand
功能：獲取隨機的鍵名
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
<?php$input = array("orange","banana","apple","red","blue");$rand = array_rand($input,2);;print_r($rand);$rand = array_rand($input,3);print_r($rand);/**結果Array( [0] => 1 [1] => 4)Array( [0] => 0 [1] => 1 [2] => 3)*/ |
array_search
功能：查詢數組中的內容，返回鍵值，如果有多個匹配，返回第一個匹配的內容
|
1
2
3
4
5
6
7
8
9
10
11
12
|
<?php$array = array("blue"=>"b","red"=>"r","green","r");$key = array_search('b', $array);echo $key;echo "<br>";$key = array_search('r', $array);echo $key;echo "<br>";/**結果bluered*/ |
array_shift
功能：移除開頭的元素，與array_pop相反
|
1
2
3
4
5
6
7
8
9
10
|
<?php$fruit = array("milk","orange","banana","apple");$top = array_shift($fruit);print_r($top);echo "<br>";print_r($fruit);/**結果milkArray ( [0] => orange [1] => banana [2] => apple )*/ |
array_unique
功能：去除數組重復的元素，保留第一個出現的，包括鍵名和值
|
1
2
3
4
5
6
7
8
9
10
|
<?php$input = array("a"=>"green","red","b"=>"green","blue","c"=>"red");$result = array_unique($input);print_r($result);echo "<br>";print_r($input);/**結果Array ( [a] => green [0] => red [1] => blue )Array ( [a] => green [0] => red [b] => green [1] => blue [c] => red )*/ |
array_slice
功能：從數組中取出部分元素
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
<?php$input = array("a","b","c","d","e");$output = array_slice($input,2);//第二個參數沒有時，表示取到最后一個元素print_r($output);echo "<br>";$output = array_slice($input,-2,1);//第二個參數是正數時，表示個數；倒數第一個是-1，倒數第二個是-2print_r($output);echo "<br>";$output = array_slice($input,0,3);print_r($output);echo "<br>";$output = array_slice($input,2,-1);//第二個參數是負數時，表示位置，取到哪一位，不包括本身print_r($output);echo "<br>";$output = array_slice($input,2,-1,true);//第三個參數為true時，保留原有的鍵值print_r($output);echo "<br>";/**結果Array ( [0] => c [1] => d [2] => e )Array ( [0] => d )Array ( [0] => a [1] => b [2] => c )Array ( [0] => c [1] => d )Array ( [2] => c [3] => d )*/ |
count
功能：返回數組元素個數，元素為數組的算一個
|
1
2
3
4
5
6
7
8
9
10
11
12
|
<?php$input = array("a","b","c",array("d","e"));$count = count($input);echo $count;echo "<br>";$input = array("a","b","c","d","e");$count = count($input);echo $count;/**結果45*/ |
current
功能:獲取當前的指針指向元素
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
<?php$array = array("foot","bike","car","plane");$result = current($array);echo $result."<br>";next($array);//使指針指向下一個元素$result = current($array);echo $result."<br>";prev($array);//使指針指向前一個元素$result = current($array);echo $result."<br>";end($array);//使指針指向最后一個元素$result = current($array);echo $result."<br>";/**結果footbikefootplane*/ |
in_array
功能：檢驗某值是否存在數組中，有返回True，沒有返回False
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
<?php$os_list = array("Mac","NT","Irix","Linux");if(in_array("Irix",$os_list)){ echo "當前操作系統列表中存在Irix";}else{ echo "當前操作系統列表中不存在Irix";}echo "<br>";if(in_array("mac",$os_list)){ echo "當前操作系統列表中存在mac";}else{ echo "當前操作系統列表中不存在mac";}echo "<br>";/**結果當前操作系統列表中存在Irix當前操作系統列表中不存在mac*/ |
list
功能：將數組中的信息賦值給多個變量
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
|
<?php$info = array("red","blue","green");list($flag,$sky,$grassland) = $info;echo "$flag,$sky,$grassland";echo "<br>";list($flag,,$grassland) = $info;echo "$flag,$grassland";echo "<br>";list(,,$grassland) = $info;echo "$grassland";echo "<br>";/**結果red,blue,greenred,greengreen*/ |
shuffle
功能：打亂數組
|
1
2
3
4
5
6
7
8
9
10
|
<?php$numbers = range(1,5);//生成一個隨機數組print_r($numbers);echo "<br/>";shuffle($numbers);//打亂數組print_r($numbers);/**結果Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 )Array ( [0] => 4 [1] => 1 [2] => 5 [3] => 2 [4] => 3 )*/ |
array_keys
功能：獲取數組的鍵名，第二個參數可以指定獲取某個元素
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
|
<?php$array = array(0=>100,"color"=>"red");print_r(array_keys($array));echo "<br>";$array = array("blue","red","green","blue","blue");print_r(array_keys($array,"blue"));echo "<br>";$array = array("color"=>array("blue","red","green"),"size"=>array("small","medium","large"));print_r(array_keys($array));echo "<br>";/**結果Array ( [0] => 0 [1] => color )Array ( [0] => 0 [1] => 3 [2] => 4 )Array ( [0] => color [1] => size )*/ |
array_reverse
功能：獲取數組的反向
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
<?php$input = array("php",3.0,array("green","red"));$result = array_reverse($input); //打亂鍵名$result_keyed = array_reverse($input,TRUE);//保留鍵名print_r($result);print_r($result_keyed);/**結果Array( [0] => Array ( [0] => green [1] => red ) [1] => 3 [2] => php)Array( [2] => Array ( [0] => green [1] => red ) [1] => 3 [0] => php)*/ |
arsort
功能：逆向排序，索引不變
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );arsort($fruits);//按照字符逆向排序或數字foreach($fruits as $key=>$val){ echo "$key = $val<br>";}/**結果b = orangea = lemonc = bananad = apple*/ |
asort
功能：進行正向排序
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );arsort($fruits);//按照字符逆向排序或數字foreach($fruits as $key=>$val){ echo "$key = $val<br>";}echo "<p>";asort($fruits);//按照字符正向排序或數字foreach($fruits as $key=>$val){ echo "$key = $val<br>";}/**結果b = orangea = lemonc = bananad = appled = applec = bananaa = lemonb = orange*/ |
krsort
功能：按照鍵名進行逆向排序
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );krsort($fruits);//按照鍵名逆向排序或數字foreach($fruits as $key=>$val){ echo "$key = $val<br>";}/**結果d = applec = bananab = orangea = lemon*/ |
ksort
功能：按照鍵名進行正向排序
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );ksort($fruits);//按照鍵名正向排序或數字foreach($fruits as $key=>$val){ echo "$key = $val<br>";}/**結果a = lemonb = orangec = bananad = apple*/ |
rsort
功能：按照值進行逆向排序，鍵名改變
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );rsort($fruits);//按照值進行逆向排序或數字，鍵名改變foreach($fruits as $key=>$val){ echo "$key = $val<br>";}/**結果0 = orange1 = lemon2 = banana3 = apple*/ |
sort
功能：按照值進行正向排序，鍵名改變
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );sort($fruits);//按照值進行逆向排序或數字，鍵名改變foreach($fruits as $key=>$val){ echo "$key = $val<br>";}/**結果0 = apple1 = banana2 = lemon3 = orange*/ |
希望本文所述對大家PHP程序設計有所幫助。
