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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：
<"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
<"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
<"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
<"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($result2);//数组2中去掉数组1中剩下的
echo "</pre>";
/**结果
Array
(
[b] => blue
[2] => e
)
Array
(
[3] => f
)
*/
array_map
功能：将回调函数执行到数组中
<"cube",$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
<"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
<"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
<"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
<"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
<"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
blue
red
*/
array_shift
功能：移除开头的元素，与array_pop相反
<"milk","orange","banana","apple"); $top = array_shift($fruit); print_r($top); echo "<br>"; print_r($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
<"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
<"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-2 print_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
<"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
4
5
*/
current
功能:获取当前的指针指向元素
<"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 $result."<br>"; /**结果 foot bike foot plane */
in_array
功能：检验某值是否存在数组中，有返回True，没有返回False
<"Mac","NT","Irix","Linux");
if(in_array("Irix",$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",$os_list)){
echo "当前操作系统列表中存在mac";
}else{
echo "当前操作系统列表中不存在mac";
}
echo "<br>";
/**结果
当前操作系统列表中存在Irix
当前操作系统列表中不存在mac
*/
list
功能：将数组中的信息赋值给多个变量
<"red","blue","green"); list($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,green red,green green */
shuffle
功能：打乱数组
<"<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
<"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",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
<"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 = $val<br>";
}
/**结果
b = orange
a = lemon
c = banana
d = apple
*/
asort
功能：进行正向排序
<"a"=>"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
arsort($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 = $val<br>";
}
/**结果
b = orange
a = lemon
c = banana
d = apple
d = apple
c = banana
a = lemon
b = orange
*/
krsort
功能：按照键名进行逆向排序
<"a"=>"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
krsort($fruits);//按照键名逆向排序或数字
foreach($fruits as $key=>$val){
echo "$key = $val<br>";
}
/**结果
d = apple
c = banana
b = orange
a = lemon
*/
ksort
功能：按照键名进行正向排序
<"a"=>"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
ksort($fruits);//按照键名正向排序或数字
foreach($fruits as $key=>$val){
echo "$key = $val<br>";
}
/**结果
a = lemon
b = orange
c = banana
d = apple
*/
rsort
功能：按照值进行逆向排序，键名改变
<"a"=>"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
rsort($fruits);//按照值进行逆向排序或数字，键名改变
foreach($fruits as $key=>$val){
echo "$key = $val<br>";
}
/**结果
0 = orange
1 = lemon
2 = banana
3 = apple
*/
sort
功能：按照值进行正向排序，键名改变
<"a"=>"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
sort($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 = apple
1 = banana
2 = lemon
3 = orange
*/
更多关于PHP相关内容感兴趣的读者可查看本站专题：《PHP数组(Array)操作技巧大全》、《php字符串(string)用法总结》、《php常用函数与技巧总结》、《PHP错误与异常处理方法总结》、《PHP基本语法入门教程》、《php面向对象程序设计入门教程》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家PHP程序设计有所帮助。
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php,数组,array,函数
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