在 PHP 中，有三種型別的陣列：
- 數值陣列 - 帶有數字 ID 鍵的陣列
- 關聯陣列 - 帶有指定的鍵的陣列，每個鍵關聯一個值
- 多維陣列 - 包含一個或多個陣列的陣列
看具體實體：
創建陣列
<?php
//方式 1
$cars = array("Volvo","BMW","Toyota");
//方式 2
$cars[0] = "Volvo";
$cars[1] = "BMW";
$cars[2] = "Toyota";
//方式 3
$cars = [
"Volvo",
"BMW",
"Toyota",
]
?>
<?php
$cars = array("Volvo","BMW","Toyota");
echo "I like " . $cars[0] . ", " . $cars[1] . " and " . $cars[2] . ".";
?>
獲取陣列的長度 - count () 函式
<?php
$cars = array("Volvo","BMW","Toyota");
echo count($cars);
?>
遍歷陣列
<?php
$cars = array("Volvo","BMW","Toyota");
//第一種方式
$arrlength = count($cars);
for($x = 0 ;$x < $arrlength ;$x++) {
echo $cars[$x];
echo "<br>";
}
//第二種方式
foreach ($cars as $key => $value){
echo $value;
echo "<br/>";
}
?>
array_chunk () 函式 (把陣列分割為帶有兩個元素的陣列塊)
<?php
$cars = array("Volvo","BMW","Toyota","Honda","Mercedes","Opel");
print_r(array_chunk($cars,2));
?>
array_keys () 函式 (回傳包含陣列中所有鍵名的一個新陣列)
<?php
$a = array("Volvo"=>"XC90","BMW"=>"X5","Toyota"=>"Highlander");
print_r(array_keys($a));
?>
array_push () 函式 (向陣列尾部插入 “blue” 和 “yellow”)
<?php
$a = array("red","green");
array_push($a,"blue","yellow");
print_r($a);
?>
array_pop () 函式 (洗掉陣列中的最后一個元素)
<?php
$a = array("red","green","blue");
array_pop($a);
print_r($a);
?>
array_reverse () 函式 (回傳翻轉順序的陣列)
<?php
$a = array("a"=>"Volvo","b"=>"BMW","c"=>"Toyota");
print_r(array_reverse($a));
?>
sort () 函式 (對陣列中的元素按字母進行升序排序)
<?php
$cars = array("Volvo","BMW","Toyota");
sort($cars);
?>
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標籤：PHP
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