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：

<?php$a = array("one","two","three");$b = array("一","二","三");$c = array_combine($a,$b);print_r($c);/**结果*Array ( [one] => 一 [two] => 二 [three] => 三 )*/

array_chunk

功能：拆分数组成多个数组

<?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>";/**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

<?php$input_array = array("a"=>"apple","b"=>"blue","c","d","e");echo "<pre>";print_r(array_count_values($input_array));echo "</pre>";/**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

<?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);//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 "</pre>";/**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

<?php//定义回调函数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>";/**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

<?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>";/**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

<?php$stack = array("orange","banana","apple","1");$last = array_pop($stack);echo "<pre>";print_r($stack);print_r($last);echo "</pre>";/**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

<?php$stack = array("orange","banana");$count = array_push($stack,"apple","red","blue");echo "<pre>";print_r($stack);print_r($count);echo "</pre>";/**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

<?php$input = array("orange","banana","apple","red","blue");$rand = array_rand($input,2);;print_r($rand);$rand = array_rand($input,3);print_r($rand);/**结果Array( [0] => 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

<?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>";/**结果bluered*/

array_shift

功能：移除开头的元素，与array_pop相反

<?php$fruit = array("milk","orange","banana","apple");$top = array_shift($fruit);print_r($top);echo "<br>";print_r($fruit);/**结果milkArray ( [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

<?php$input = array("a"=>"green","red","b"=>"green","blue","c"=>"red");$result = array_unique($input);print_r($result);echo "<br>";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

<?php$input = array("a","b","c","d","e");$output = array_slice($input,2);//第二个参数没有时，表示取到最后一个元素print_r($output);echo "<br>";$output = array_slice($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-2print_r($output);echo "<br>";$output = array_slice($input,0,3);print_r($output);echo "<br>";$output = array_slice($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($output);echo "<br>";$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 "<br>";/**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

<?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;/**结果45*/

current

功能:获取当前的指针指向元素

<?php$array = array("foot","bike","car","plane");$result = current($array);echo $result."<br>";next($array);//使指针指向下一个元素$result = current($array);echo $result."<br>";prev($array);//使指针指向前一个元素$result = current($array);echo $result."<br>";end($array);//使指针指向最后一个元素$result = current($array);echo $result."<br>";/**结果footbikefootplane*/

in_array

功能：检验某值是否存在数组中，有返回True，没有返回False

<?php$os_list = array("Mac","NT","Irix","Linux");if(in_array("Irix",$os_list)){ echo "当前操作系统列表中存在Irix";}else{ echo "当前操作系统列表中不存在Irix";}echo "<br>";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 "<br>";/**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

<?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>";/**结果red,blue,greenred,greengreen*/

shuffle

功能：打乱数组

<?php$numbers = range(1,5);//生成一个随机数组print_r($numbers);echo "<br/>";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

<?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>";/**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

<?php$input = array("php",3.0,array("green","red"));$result = array_reverse($input); //打乱键名$result_keyed = array_reverse($input,TRUE);//保留键名print_r($result);print_r($result_keyed);/**结果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，索引不变

<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );arsort($fruits);//按照字符逆向排序或数字foreach($fruits as $key=>$val){ echo "$key = $val<br>";}/**结果b = orangea = lemonc = bananad = apple*/

asort

功能：进行正向排序

<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );arsort($fruits);//按照字符逆向排序或数字foreach($fruits as $key=>$val){ echo "$key = $val<br>";}echo "<p>";asort($fruits);//按照字符正向排序或数字foreach($fruits as $key=>$val){ echo "$key = $val<br>";}/**结果b = orangea = lemonc = bananad = appled = applec = bananaa = lemonb = orange*/

krsort

功能：按照键名进行逆向排序

<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );krsort($fruits);//按照键名逆向排序或数字foreach($fruits as $key=>$val){ echo "$key = $val<br>";}/**结果d = applec = bananab = orangea = lemon*/

ksort

功能：按照键名进行正向排序

<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );ksort($fruits);//按照键名正向排序或数字foreach($fruits as $key=>$val){ echo "$key = $val<br>";}/**结果a = lemonb = orangec = bananad = apple*/

rsort

功能：按照值进行逆向排序，键名改变

<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );rsort($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<br>";}/**结果0 = orange1 = lemon2 = banana3 = apple*/

sort

功能：按照值进行正向排序，键名改变

<?php$fruits = array( "a"=>"lemon", "b"=>"orange", "c"=>"banana", "d"=>"apple", );sort($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<br>";}/**结果0 = apple1 = banana2 = lemon3 = orange*/

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