php - Preg_replace 与数组替换

Question

$string = ":abc and :def have apples.";
$replacements = array('Mary', 'Jane');

应该变成:

Mary and Jane have apples.

现在我是这样做的:

preg_match_all('/:(\w+)/', $string, $matches);

foreach($matches[0] as $index => $match)
   $string = str_replace($match, $replacements[$index], $string);

我可以使用 preg_replace 之类的东西在单次运行中完成吗？

Answer 1

您可以将 preg_replace_callback 与一个回调一起使用，一个接一个地消耗您的替换:

$string = ":abc and :def have apples.";
$replacements = array('Mary', 'Jane');
echo preg_replace_callback('/:\w+/', function($matches) use (&$replacements) {
    return array_shift($replacements);
}, $string);

输出:

Mary and Jane have apples.