Question

我有一个名为$ featuresSEO的数组，其中包含许多单词，如：

Array (
    [0] => Japan 
    [1] => Japanese 
    [2] => Tokyo 
    [3] => Yokohama 
    [4] => Osaka 
    [5] => Asian 
    [6] => Nagoya 
)

然后我有一个如下字符串：

 Searching the |*-*| Dating membership database is the key to locating |*-*| people
 you would be interested in. You can search for |*-*| Singles including |*-*| Women
 and |*-*| Men in any location worldwide. Join now to search for |*-*| Singles.

我一直在尝试用数组中的随机字替换|*-*|的实例。我已经尝试过str_replace（）但无法使随机方面正常工作。

有人能把我推向正确的方向吗？

THX

Answer 1

逐个替换它们。这个将用随机单词替换每个出现。您可能会多次从$wordarray看到相同的单词，因为它每次随机选择1个。

for ($i = 0; $i < substr_count($string, '|*-*|'); $i++){
     $string = preg_replace('/\|\*-\*\|/',$wordarray[rand(0,count($wordarray)-1)],$string, 1);
}

想要只使用一次这个词吗？将数组洗牌并循环遍历：

shuffle($wordarray);
foreach ($wordarray as $word){
    $string = preg_replace('/\|\*-\*\|/',$word,$string,1);
}

Answer 2

试试这个

$string = ' Searching the |*-*| Dating membership database is the key to locating |*-*| people
 you would be interested in. You can search for |*-*| Singles including |*-*| Women
 and |*-*| Men in any location worldwide. Join now to search for |*-*| Singles.';

$words = array('Japanese', 'Tokyo', 'Asian');

$placeholder = '|*-*|';
$pos = null;

while(null === $pos || false !== $pos) {
    $pos = strpos($string, $placeholder);
    $string = substr_replace($string, $words[rand(0, count($words)-1)], $pos, strlen($placeholder));

}

echo $string;

第一个词出乎意料

Answer 3

试试这个

<?php
    $array = array("Japan","Japanese","Tokyo","Yokohama","Osaka","Asian","Nagoya");
    $a = array_rand($array);
    $string= "abc|*-*|";
    echo str_replace("|*-*|", $array[$a], $string);
?>

Answer 4

仅替换第一场比赛的代码来自here。以下代码仅使用列表中的每个单词一次：

$wordlist = array(
    'Japan',
    'Japanese',
    'Tokyo',
    'Yokohama',
    'Osaka',
    'Asian',
    'Nagoya'
);
$string = "
Searching the |*-*| Dating membership database is the key to locating |*-*| people
you would be interested in. You can search for |*-*| Singles including |*-*| Women
and |*-*| Men in any location worldwide. Join now to search for |*-*| Singles.
";
$replace = '|*-*|';
while(true){
    $index = strpos($string, $replace);
    if($index === false){
        // ran out of place holder strings
        break;
    }
    if(count($wordlist) == 0){
        // ran out of words
        break;
    }
    $word = array_splice($wordlist, rand(0, count($wordlist) - 1), 1);
    $string = substr_replace($string, $word[0], $index, strlen($replace));
}
echo $string;

PHP随机替换单词

4 个答案: