論壇 › PHP › Arrays

admin 發表於 2020-11-3 19:02:12

Arrays

<?php
$cars = array("Volvo", "BMW", "Toyota");
echo count($cars);
?>結果: 3

admin 發表於 2020-11-3 19:05:07

<?php
$cars = array("Volvo", "BMW", "Toyota");
echo "I like " . $cars . ", " . $cars . " and " . $cars . ".";
?>結果: I like Volvo, BMW and Toyota.

admin 發表於 2020-11-3 19:09:23

<?php
$cars = array("Volvo", "BMW", "Toyota");
$arrlength = count($cars);

for($x = 0; $x < $arrlength; $x++) {
echo $cars[$x];
echo "<br>";
}
?>結果:
Volvo
BMW
Toyota

admin 發表於 2020-11-3 19:12:36

$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43"); 和
$age['Peter'] = "35";
$age['Ben'] = "37";
$age['Joe'] = "43";意思一樣。

admin 發表於 2020-11-3 19:15:20

<?php
$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");

foreach($age as $x => $x_value) {
echo "Key=" . $x . ", Value=" . $x_value;
echo "<br>";
}
?>結果:
Key=Peter, Value=35
Key=Ben, Value=37
Key=Joe, Value=43

admin 發表於 2020-11-3 19:21:49

Multidimensional Arrays
<?php
$cars = array (
array("Volvo",22,18),
array("BMW",15,13),
array("Saab",5,2),
array("Land Rover",17,15)
);

echo $cars.": In stock: ".$cars.", sold: ".$cars.".<br>";
echo $cars.": In stock: ".$cars.", sold: ".$cars.".<br>";
echo $cars.": In stock: ".$cars.", sold: ".$cars.".<br>";
echo $cars.": In stock: ".$cars.", sold: ".$cars.".<br>";
?>結果:
Volvo: In stock: 22, sold: 18.
BMW: In stock: 15, sold: 13.
Saab: In stock: 5, sold: 2.
Land Rover: In stock: 17, sold: 15.

admin 發表於 2020-11-3 19:29:33

<?php
$cars = array("Volvo", "BMW", "Toyota");
sort($cars);
?>排序

admin 發表於 2020-11-3 19:31:56

PHP array sort functions:
[*]sort() - sort arrays in ascending order
[*]rsort() - sort arrays in descending order
[*]asort() - sort associative arrays in ascending order, according to the value
[*]ksort() - sort associative arrays in ascending order, according to the key
[*]arsort() - sort associative arrays in descending order, according to the value
[*]krsort() - sort associative arrays in descending order, according to the key

admin 發表於 2020-11-3 19:33:33

<?php
$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");
arsort($age);
?>sort associative arrays in descending order, according to the value

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