《PHP學(xué)習(xí)：php常用數(shù)組array函數(shù)實(shí)例總結(jié)【賦值,拆分,合并,計(jì)算,添加,刪除,查詢(xún),判斷,排序】》要點(diǎn)：
本文介紹了PHP學(xué)習(xí)：php常用數(shù)組array函數(shù)實(shí)例總結(jié)【賦值,拆分,合并,計(jì)算,添加,刪除,查詢(xún),判斷,排序】，希望對(duì)您有用。如果有疑問(wèn)，可以聯(lián)系我們。
本文實(shí)例總結(jié)了php常用數(shù)組array函數(shù).分享給大家供大家參考,具體如下：PHP編程
array_combinePHP編程
功能：用一個(gè)數(shù)組的值作為新數(shù)組的鍵名,另一個(gè)數(shù)組的值作為新數(shù)組的值PHP編程
案例：PHP編程
<?php
$a = array("one","two","three");
$b = array("一","二","三");
$c = array_combine($a,$b);
print_r($c);
/**結(jié)果
*Array ( [one] => 一 [two] => 二 [three] => 三 )
*/
array_chunkPHP編程
功能：拆分?jǐn)?shù)組成多個(gè)數(shù)組PHP編程
<?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(jié)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_valuesPHP編程
功能：統(tǒng)計(jì)數(shù)組中值出現(xiàn)的次數(shù)PHP編程
<?php
$input_array = array("a"=>"apple","b"=>"blue","c","d","e");
echo "<pre>";
print_r(array_count_values($input_array));
echo "</pre>";
/**結(jié)果
Array
(
[apple] => 1
[blue] => 1
[c] => 1
[d] => 1
[e] => 1
)
*/
array_diffPHP編程
功能：第一個(gè)數(shù)組中去掉第二個(gè)數(shù)組中有的數(shù)據(jù),返回剩下的內(nèi)容作為結(jié)果PHP編程
<?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(shù)組1中去掉數(shù)組2中剩下的
print_r($result2);//數(shù)組2中去掉數(shù)組1中剩下的
echo "</pre>";
/**結(jié)果
Array
(
[b] => blue
[2] => e
)
Array
(
[3] => f
)
*/
array_mapPHP編程
功能：將回調(diào)函數(shù)執(zhí)行到數(shù)組中PHP編程
<?php
//定義回調(diào)函數(shù)
function cube($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(jié)果
Array
(
[0] => 1
[1] => 8
[2] => 27
[3] => 64
[4] => 125
)
*/
array_mergePHP編程
功能：合并一個(gè)或多個(gè)數(shù)組PHP編程
說(shuō)明：如果后面有鍵名相同的會(huì)覆蓋掉前面的內(nèi)容,鍵名為數(shù)字的會(huì)添加到后面PHP編程
<?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(jié)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_popPHP編程
功能：剔除數(shù)組最后一個(gè)元素,返回被剔除的元素內(nèi)容PHP編程
<?php
$stack = array("orange","banana","apple","1");
$last = array_pop($stack);
echo "<pre>";
print_r($stack);
print_r($last);
echo "</pre>";
/**結(jié)果
Array
(
[0] => orange
[1] => banana
[2] => apple
)
1
*/
array_pushPHP編程
功能：將一個(gè)多個(gè)單元壓入數(shù)組末尾,返回之后的數(shù)組個(gè)數(shù)PHP編程
<?php
$stack = array("orange","banana");
$count = array_push($stack,"apple","red","blue");
echo "<pre>";
print_r($stack);
print_r($count);
echo "</pre>";
/**結(jié)果
Array
(
[0] => orange
[1] => banana
[2] => apple
[3] => red
[4] => blue
)
5
*/
array_randPHP編程
功能：獲取隨機(jī)的鍵名PHP編程
<?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(jié)果
Array
(
[0] => 1
[1] => 4
)
Array
(
[0] => 0
[1] => 1
[2] => 3
)
*/
array_searchPHP編程
功能：查詢(xún)數(shù)組中的內(nèi)容,返回鍵值,如果有多個(gè)匹配,返回第一個(gè)匹配的內(nèi)容PHP編程
<?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(jié)果
blue
red
*/
array_shiftPHP編程
功能：移除開(kāi)頭的元素,與array_pop相反PHP編程
<?php
$fruit = array("milk","orange","banana","apple");
$top = array_shift($fruit);
print_r($top);
echo "<br>";
print_r($fruit);
/**結(jié)果
milk
Array ( [0] => orange [1] => banana [2] => apple )
*/
array_uniquePHP編程
功能：去除數(shù)組重復(fù)的元素,保留第一個(gè)出現(xiàn)的,包括鍵名和值PHP編程
<?php
$input = array("a"=>"green","red","b"=>"green","blue","c"=>"red");
$result = array_unique($input);
print_r($result);
echo "<br>";
print_r($input);
/**結(jié)果
Array ( [a] => green [0] => red [1] => blue )
Array ( [a] => green [0] => red [b] => green [1] => blue [c] => red )
*/
array_slicePHP編程
功能：從數(shù)組中取出部分元素PHP編程
<?php
$input = array("a","b","c","d","e");
$output = array_slice($input,2);//第二個(gè)參數(shù)沒(méi)有時(shí),表示取到最后一個(gè)元素
print_r($output);
echo "<br>";
$output = array_slice($input,-2,1);//第二個(gè)參數(shù)是正數(shù)時(shí),表示個(gè)數(shù)；倒數(shù)第一個(gè)是-1,倒數(shù)第二個(gè)是-2
print_r($output);
echo "<br>";
$output = array_slice($input,0,3);
print_r($output);
echo "<br>";
$output = array_slice($input,2,-1);//第二個(gè)參數(shù)是負(fù)數(shù)時(shí),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(gè)參數(shù)為true時(shí),保留原有的鍵值
print_r($output);
echo "<br>";
/**結(jié)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 )
*/
countPHP編程
功能：返回?cái)?shù)組元素個(gè)數(shù),元素為數(shù)組的算一個(gè)PHP編程
<?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(jié)果
4
5
*/
currentPHP編程
功能:獲取當(dāng)前的指針指向元素PHP編程
<?php
$array = array("foot","bike","car","plane");
$result = current($array);
echo $result."<br>";
next($array);//使指針指向下一個(gè)元素
$result = current($array);
echo $result."<br>";
prev($array);//使指針指向前一個(gè)元素
$result = current($array);
echo $result."<br>";
end($array);//使指針指向最后一個(gè)元素
$result = current($array);
echo $result."<br>";
/**結(jié)果
foot
bike
foot
plane
*/
in_arrayPHP編程
功能：檢驗(yàn)?zāi)持凳欠翊嬖跀?shù)組中,有返回True,沒(méi)有返回FalsePHP編程
<?php
$os_list = array("Mac","NT","Irix","Linux");
if(in_array("Irix",$os_list)){
echo "當(dāng)前操作系統(tǒng)列表中存在Irix";
}else{
echo "當(dāng)前操作系統(tǒng)列表中不存在Irix";
}
echo "<br>";
if(in_array("mac",$os_list)){
echo "當(dāng)前操作系統(tǒng)列表中存在mac";
}else{
echo "當(dāng)前操作系統(tǒng)列表中不存在mac";
}
echo "<br>";
/**結(jié)果
當(dāng)前操作系統(tǒng)列表中存在Irix
當(dāng)前操作系統(tǒng)列表中不存在mac
*/
listPHP編程
功能：將數(shù)組中的信息賦值給多個(gè)變量PHP編程
<?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(jié)果
red,blue,green
red,green
green
*/
shufflePHP編程
功能：打亂數(shù)組PHP編程
<?php $numbers = range(1,5);//生成一個(gè)隨機(jī)數(shù)組 print_r($numbers); echo "<br/>"; shuffle($numbers);//打亂數(shù)組 print_r($numbers); /**結(jié)果 Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 ) Array ( [0] => 4 [1] => 1 [2] => 5 [3] => 2 [4] => 3 ) */
array_keysPHP編程
功能：獲取數(shù)組的鍵名,第二個(gè)參數(shù)可以指定獲取某個(gè)元素PHP編程
<?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(jié)果
Array ( [0] => 0 [1] => color )
Array ( [0] => 0 [1] => 3 [2] => 4 )
Array ( [0] => color [1] => size )
*/
array_reversePHP編程
功能：獲取數(shù)組的反向PHP編程
<?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(jié)果
Array
(
[0] => Array
(
[0] => green
[1] => red
)
[1] => 3
[2] => php
)
Array
(
[2] => Array
(
[0] => green
[1] => red
)
[1] => 3
[0] => php
)
*/
arsortPHP編程
功能：逆向排序,索引不變PHP編程
<?php
$fruits = array(
"a"=>"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
arsort($fruits);//按照字符逆向排序或數(shù)字
foreach($fruits as $key=>$val){
echo "$key = $val<br>";
}
/**結(jié)果
b = orange
a = lemon
c = banana
d = apple
*/
asortPHP編程
功能：進(jìn)行正向排序PHP編程
<?php
$fruits = array(
"a"=>"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
arsort($fruits);//按照字符逆向排序或數(shù)字
foreach($fruits as $key=>$val){
echo "$key = $val<br>";
}
echo "<p>";
asort($fruits);//按照字符正向排序或數(shù)字
foreach($fruits as $key=>$val){
echo "$key = $val<br>";
}
/**結(jié)果
b = orange
a = lemon
c = banana
d = apple
d = apple
c = banana
a = lemon
b = orange
*/
krsortPHP編程
功能：按照鍵名進(jìn)行逆向排序PHP編程
<?php
$fruits = array(
"a"=>"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
krsort($fruits);//按照鍵名逆向排序或數(shù)字
foreach($fruits as $key=>$val){
echo "$key = $val<br>";
}
/**結(jié)果
d = apple
c = banana
b = orange
a = lemon
*/
ksortPHP編程
功能：按照鍵名進(jìn)行正向排序PHP編程
<?php
$fruits = array(
"a"=>"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
ksort($fruits);//按照鍵名正向排序或數(shù)字
foreach($fruits as $key=>$val){
echo "$key = $val<br>";
}
/**結(jié)果
a = lemon
b = orange
c = banana
d = apple
*/
rsortPHP編程
功能：按照值進(jìn)行逆向排序,鍵名改變PHP編程
<?php
$fruits = array(
"a"=>"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
rsort($fruits);//按照值進(jìn)行逆向排序或數(shù)字,鍵名改變
foreach($fruits as $key=>$val){
echo "$key = $val<br>";
}
/**結(jié)果
0 = orange
1 = lemon
2 = banana
3 = apple
*/
sortPHP編程
功能：按照值進(jìn)行正向排序,鍵名改變PHP編程
<?php
$fruits = array(
"a"=>"lemon",
"b"=>"orange",
"c"=>"banana",
"d"=>"apple",
);
sort($fruits);//按照值進(jìn)行逆向排序或數(shù)字,鍵名改變
foreach($fruits as $key=>$val){
echo "$key = $val<br>";
}
/**結(jié)果
0 = apple
1 = banana
2 = lemon
3 = orange
*/
更多關(guān)于PHP相關(guān)內(nèi)容感興趣的讀者可查看本站專(zhuān)題：《PHP數(shù)組(Array)操作技巧大全》、《php字符串(string)用法總結(jié)》、《php常用函數(shù)與技巧總結(jié)》、《PHP錯(cuò)誤與異常處理方法總結(jié)》、《PHP基本語(yǔ)法入門(mén)教程》、《php面向?qū)ο蟪绦蛟O(shè)計(jì)入門(mén)教程》、《php+mysql數(shù)據(jù)庫(kù)操作入門(mén)教程》及《php常見(jiàn)數(shù)據(jù)庫(kù)操作技巧匯總》PHP編程
希望本文所述對(duì)大家PHP程序設(shè)計(jì)有所幫助.PHP編程
轉(zhuǎn)載請(qǐng)注明本頁(yè)網(wǎng)址：
http://www.fzlkiss.com/jiaocheng/2476.html
