作者：bake

(PHP 4, PHP 5, PHP 7, PHP 8)

strlen — 獲取字串長度

http://localhost/bake_web/test/strlen.php

<?php
$str = 'abcdef';
echo strlen($str); // 6

$str = ' ab cd ';
echo strlen($str); // 7
?>

(PHP 4, PHP 5, PHP 7, PHP 8)

shuffle — 打乱数组

shuffle.php

<?php
$numbers = range(1, 20);
shuffle($numbers);
foreach ($numbers as $number) {
echo "$number ";
}
?>