php str_replace() 搜索中的重复词

Question

正在尝试使用 str_replace() 搜索和替换一些内容。如果 $find 是唯一的，它工作正常，但是一旦 $find 有重复的单词，整个事情就搞砸了。

例如style1 将应用于两个 $find[0] && $find[1]，因为两者都是 Lorem Ipsum，同样适用于 dummy。

如何处理这种情况？

$find = Array(
    [0] => Lorem Ipsum 
    [1] => Lorem Ipsum 
    [2] => typesetting 
    [3] => dummy 
    [4] => dummy 
);

$replace = Array(
    [0] => style1
    [1] => style2
    [2] => style3
    [3] => style4
    [4] => style5
);

$string = "Lorem Ipsum is simply dummy text of the printing and typesetting industry. 
           Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, 
           when an unknown printer took a galley of type and scrambled it to make a type specimen book.";

$result = str_replace($find,$replace,$string);
echo $result;

Answer 1

您可以使用 str_replace_first 的实现，如 this question 中所述，并迭代 $find 和 $replace 数组，替换每个值在$find 仅数组：

function str_replace_first($search, $replace, $subject) {
    if (($pos = strpos($subject, $search)) !== false) {
        return substr_replace($subject, $replace, $pos, strlen($search));
    }
    return $subject;
}

$result = $string;
foreach ($find as $key => $search) {
    $result = str_replace_first($search, $replace[$key], $result);
}
echo $result;

输出：

style1 is simply style4 text of the printing and style3 industry. 
style2 has been the industry's standard style5 text ever since the 1500s, 
when an unknown printer took a galley of type and scrambled it to make a type specimen book.

Demo on 3v4l.org

php str_replace() 搜索中的重复词

php str_replace() duplicate words on search

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