本文实例总结了php常用数组array函数。分享给大家供大家参考，具体如下：
array_combine
功能：用一个数组的值作为新数组的键名，另一个数组的值作为新数组的值
案例：
一 [two] => 二 [three] => 三 ) */
array_chunk
功能：拆分数组成多个数组
"apple","b"=>"blue","c","d","e"); echo ""; print_r(array_chunk($input_array, 2)); print_r(array_chunk($input_array, 2,True)); echo ""; /**结果 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：统计数组中值出现的次数
"apple","b"=>"blue","c","d","e"); echo ""; print_r(array_count_values($input_array)); echo ""; /**结果 Array ( [apple] => 1 [blue] => 1 [c] => 1 [d] => 1 [e] => 1 ) */
array_diff
功能：第一个数组中去掉第二个数组中有的数据，返回剩下的内容作为结果
"apple","b"=>"blue","c","d","e");
$array2 = array("apple","c","d","f");
$result = array_diff($array1, $array2);
$result2 = array_diff($array2, $array1);
echo "";
print_r($result);//数组1中去掉数组2中剩下的
print_r($result2);//数组2中去掉数组1中剩下的
echo "
";
/**结果
Array
(
[b] => blue
[2] => e
)
Array
(
[3] => f
)
*/
array_map
功能：将回调函数执行到数组中
"; print_r($b); echo ""; /**结果 Array ( [0] => 1 [1] => 8 [2] => 27 [3] => 64 [4] => 125 ) */
array_merge
功能：合并一个或多个数组
说明：如果后面有键名相同的会覆盖掉前面的内容，键名为数字的会添加到后面
"red",2,4);
$array2 = array("a","b","color"=>"green","shape"=>"trapezoid",4);
$result1 = array_merge($array1,$array2);
$result2 = array_merge_recursive($array1,$array2);
echo "";
print_r($result1);
print_r($result2);
echo "
";
/**结果
Array
(
[color] => green
[0] => 2
[1] => 4
[2] => a
[3] => b
[shape] => trapezoid
[4] => 4
)
Array
(
[color] => Array
(
[0] => red
[1] => green
)
[0] => 2
[1] => 4
[2] => a
[3] => b
[shape] => trapezoid
[4] => 4
)
*/
array_pop
功能：剔除数组最后一个元素，返回被剔除的元素内容
"; print_r($stack); print_r($last); echo ""; /**结果 Array ( [0] => orange [1] => banana [2] => apple ) 1 */
array_push
功能：将一个多个单元压入数组末尾，返回之后的数组个数
"; print_r($stack); print_r($count); echo ""; /**结果 Array ( [0] => orange [1] => banana [2] => apple [3] => red [4] => blue ) 5 */
array_rand
功能：获取随机的键名
1 [1] => 4 ) Array ( [0] => 0 [1] => 1 [2] => 3 ) */
array_search
功能：查询数组中的内容，返回键值，如果有多个匹配，返回第一个匹配的内容
"b","red"=>"r","green","r");
$key = array_search('b', $array);
echo $key;
echo "
";
$key = array_search('r', $array);
echo $key;
echo "
";
/**结果
blue
red
*/
array_shift
功能：移除开头的元素，与array_pop相反
"; print_r($fruit); /**结果 milk Array ( [0] => orange [1] => banana [2] => apple ) */
array_unique
功能：去除数组重复的元素，保留第一个出现的，包括键名和值
"green","red","b"=>"green","blue","c"=>"red"); $result = array_unique($input); print_r($result); echo "
"; print_r($input); /**结果 Array ( [a] => green [0] => red [1] => blue ) Array ( [a] => green [0] => red [b] => green [1] => blue [c] => red ) */
array_slice
功能：从数组中取出部分元素
"; $output = array_slice($input,-2,1);//第二个参数是正数时，表示个数；倒数第一个是-1，倒数第二个是-2 print_r($output); echo "
"; $output = array_slice($input,0,3); print_r($output); echo "
"; $output = array_slice($input,2,-1);//第二个参数是负数时，表示位置，取到哪一位，不包括本身 print_r($output); echo "
"; $output = array_slice($input,2,-1,true);//第三个参数为true时，保留原有的键值 print_r($output); echo "
"; /**结果 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：返回数组元素个数，元素为数组的算一个
";
$input = array("a","b","c","d","e");
$count = count($input);
echo $count;
/**结果
4
5
*/
current
功能:获取当前的指针指向元素
"; next($array);//使指针指向下一个元素 $result = current($array); echo $result."
"; prev($array);//使指针指向前一个元素 $result = current($array); echo $result."
"; end($array);//使指针指向最后一个元素 $result = current($array); echo $result."
"; /**结果 foot bike foot plane */
in_array
功能：检验某值是否存在数组中，有返回True，没有返回False
";
if(in_array("mac",$os_list)){
echo "当前操作系统列表中存在mac";
}else{
echo "当前操作系统列表中不存在mac";
}
echo "
";
/**结果
当前操作系统列表中存在Irix
当前操作系统列表中不存在mac
*/
list
功能：将数组中的信息赋值给多个变量
"; list($flag,,$grassland) = $info; echo "$flag,$grassland"; echo "
"; list(,,$grassland) = $info; echo "$grassland"; echo "
"; /**结果 red,blue,green red,green green */
shuffle
功能：打乱数组
"; shuffle($numbers);//打乱数组 print_r($numbers); /**结果 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：获取数组的键名，第二个参数可以指定获取某个元素
100,"color"=>"red"); print_r(array_keys($array)); echo "
"; $array = array("blue","red","green","blue","blue"); print_r(array_keys($array,"blue")); echo "
"; $array = array("color"=>array("blue","red","green"),"size"=>array("small","medium","large")); print_r(array_keys($array)); echo "
"; /**结果 Array ( [0] => 0 [1] => color ) Array ( [0] => 0 [1] => 3 [2] => 4 ) Array ( [0] => color [1] => size ) */
array_reverse
功能：获取数组的反向
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，索引不变
"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
arsort($fruits);//按照字符逆向排序或数字
foreach($fruits as $key=>$val){
echo "$key = $val
";
}
/**结果
b = orange
a = lemon
c = banana
d = apple
*/
asort
功能：进行正向排序
"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
arsort($fruits);//按照字符逆向排序或数字
foreach($fruits as $key=>$val){
echo "$key = $val
";
}
echo "";
asort($fruits);//按照字符正向排序或数字
foreach($fruits as $key=>$val){
echo "$key = $val
";
}
/**结果
b = orange
a = lemon
c = banana
d = apple
d = apple
c = banana
a = lemon
b = orange
*/
krsort
功能：按照键名进行逆向排序
"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
krsort($fruits);//按照键名逆向排序或数字
foreach($fruits as $key=>$val){
echo "$key = $val
";
}
/**结果
d = apple
c = banana
b = orange
a = lemon
*/
ksort
功能：按照键名进行正向排序
"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
ksort($fruits);//按照键名正向排序或数字
foreach($fruits as $key=>$val){
echo "$key = $val
";
}
/**结果
a = lemon
b = orange
c = banana
d = apple
*/
rsort
功能：按照值进行逆向排序，键名改变
"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
rsort($fruits);//按照值进行逆向排序或数字，键名改变
foreach($fruits as $key=>$val){
echo "$key = $val
";
}
/**结果
0 = orange
1 = lemon
2 = banana
3 = apple
*/
sort
功能：按照值进行正向排序，键名改变
"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
sort($fruits);//按照值进行逆向排序或数字，键名改变
foreach($fruits as $key=>$val){
echo "$key = $val
";
}
/**结果
0 = apple
1 = banana
2 = lemon
3 = orange
*/
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