php常用數組處理方法

標籤：

1. array_shift()  將數組第一個單元移出資料並返回。

demo1:

<?php 

$tmparray=array("1","2","3","4");

$tmparray=array_shift($tmparray);

print_r($tmparray);//array("1");

?>

2.array_chunk()將一個數組分割成多個數組,後面參數控制單元數目

<?php

$tmparray=array("a","b","c","d","e");

$tmparray=array_chunk($tmparray,2);

print_r($tmparray);//array(0=>array(0=>a,1=>b),1=>array(0=>c,1=>d),2=>array(0=>2));

?>

3.array_push()將傳入的值壓入array的末尾。

$tmparray=array("a","b");

$tmparray=array_push($tmparray,"c","d");

print_r($tmparray);//array(0=>a,1=>b,2=>c,3=>d);

?>

4.array_unshift() 將傳入的單元整體插入到數組中 

<?php 
$tmparray= array ("a", "b"); 
$resarray = array_unshift ($tmparray, "c", "d"); 
print_r($resarray )//Array([0] => a[1] =>b[2] =>c[3] =>d) //返回4 數組個數
?> 

5.array_unique對數組去重，並返回一個新的數組 

<? 
$tmparray = ("a" => "a","b" => "b","c" => "c","d" => "b"); 
$resarray = array_unique($tmparray);//("a" => "a","b" => "b","c" => "c"); 
?> 

php常用數組處理方法