Question

我确定这很简单，但是从字符串中随机化文本的最佳方法是什么？类似的东西：

$content = "{hey|hi|hello there}! {i am|i'm} {good|great}!";

我怎么能这样输出：

哎！我很好！你好！我很棒！等。

Answer 1

也许尝试类似的事情：

$content = "{hey|hi|hello there}! {i am|i'm} {good|great}!";

$randomOutput = preg_replace('/(\{.*?\})/s', function($matches) {
    $possibilities = (array) explode('|', trim($matches[0], '{}'));

    return $possibilities[array_rand($possibilities)];
}, $content);

PHP版本＆lt; 5.3

function randomOutputCallback($matches) {
    $possibilities = (array) explode('|', trim($matches[0], '{}'));

    return $possibilities[array_rand($possibilities)];
}

$content = "{hey|hi|hello there}! {i am|i'm} {good|great}!";

$randomOutput = preg_replace('/(\{.*?\})/s', 'randomOutputCallback', $content);

Answer 2

如果使用数组：

$greeting = array("hey","hi","hello there");
$suffix = array("good","great");

$randGreeting = $greeting[rand(0, sizeof($greeting))];
$randSuffix   = $suffix[rand(0,(sizeof($suffix)))];

echo "$randGreeting, I'm $randSuffix!";

当然，您也可以将最后一行写为：

echo $randomGreeting . ", I'm " . $randSuffix . "!";

Answer 3

我会将元素排列在一个数组中......类似于This Live Demo。

<?php

$responseText = array(
    array("hey","hi","hello there"),
    "! ",
    array("i am", "i'm"),
    " ",
    array("good", "great"),
    "! "
);

echo randomResponse($responseText);

function randomResponse($array){
    $result='';
    foreach ($array as $item){
        if (is_array($item))
            $result.= $item[rand(0, count($item)-1)];
        else
            $result.= $item;
    }
    return ($result);
}
?>

我如何随机化一个字符串？

3 个答案: