在php中不重复的数组

我正在使用我的代码，允许用户输入一个单词，单词的每个字母都会给出一个含义

示例：用户输入文本“APPLE”。 输出：

每个字母的意思都是数组

我已经在这里有了我的代码，但是它的意思是重复的

例如：

A -  **Arrow**
L -  Love
A - **Arrow**
S - Soul

这是我的密码

<?php
$chars = str_split("APPLE");
foreach($chars as $char){
    if (substr($char, 0, 1) === 'A')
    {
    $meaning = array("Angel","Ancient","Arrow");
    echo $meaning[array_rand($meaning)];
    }
}
?>

您可以保存以前使用的术语的“缓存”数组。例如：

<?php
$chars = str_split("APPLE");
$used_terms = array();
foreach($chars as $char){
    if (substr($char, 0, 1) === 'A') {
        $meaning = array("Angel","Ancient","Arrow");
        do {
            $term = $meaning[array_rand($meaning)];
        } while (in_array($term, $used_terms));
        $used_terms[] = $term;

        echo $term;
    }
}
?>

$chars = str_split("APPLE");
$words = array(
    // its up to you what words you want to map
    'A' => array("Angel","Ancient","Arrow"),
    'E' => array('Elephat', 'Eardrum'),
    'L' => array('Level', 'Laravel', 'Love'),
    'S' => array('Sweet', 'Spicy', 'Savy'),
    'P' => array('Powerful', 'Predictable', 'Pass', 'piss')
);

foreach($chars as $char){
    $random_key = array_rand($words[$char]); // get random key
    $key = $words[$char][$random_key]; // get the word
    unset($words[$char][$random_key]); // unset it so that it will never be repeated
    echo "$char - $key <br/>";
}

---

您可以在循环中临时取消设置它，这样就不会得到DUP。例如：

<?php
$chars = str_split("APPLE");
$used_terms = array();
foreach($chars as $char){
    if (substr($char, 0, 1) === 'A') {
        $meaning = array("Angel","Ancient","Arrow");
        do {
            $term = $meaning[array_rand($meaning)];
        } while (in_array($term, $used_terms));
        $used_terms[] = $term;

        echo $term;
    }
}
?>

$chars = str_split("APPLE");
$words = array(
    // its up to you what words you want to map
    'A' => array("Angel","Ancient","Arrow"),
    'E' => array('Elephat', 'Eardrum'),
    'L' => array('Level', 'Laravel', 'Love'),
    'S' => array('Sweet', 'Spicy', 'Savy'),
    'P' => array('Powerful', 'Predictable', 'Pass', 'piss')
);

foreach($chars as $char){
    $random_key = array_rand($words[$char]); // get random key
    $key = $words[$char][$random_key]; // get the word
    unset($words[$char][$random_key]); // unset it so that it will never be repeated
    echo "$char - $key <br/>";
}

$chars=str_split（“苹果”）；
$words=数组(
//这取决于你想映射什么词
'A'=>数组（“天使”、“古代”、“箭头”），
'E'=>数组（'Elephat'，'earrumn'），
'L'=>数组（'Level'，'Laravel'，'Love'），
'S'=>数组（'Sweet'、'spice'、'Savy'），
'P'=>数组（'power'、'Predictable'、'Pass'、'piss'）
);
foreach（$chars作为$char）{
$random_key=array_rand（$words[$char]）；//获取随机键
$key=$words[$char][$random_key]；//获取单词
unset（$words[$char][$random_key]）；//将其取消设置，使其不再重复
回显“$char-$key
”；
}

My bad，这应该是一个do while循环。更新。不过，@Ghost的unset方法更有效：）