<?php $arr = ['foo' => [5 => 'bar', 10 => 'baz']]; $match = 'foo.{key}.bar'; $pattern = '/'.preg_replace('/\{(\w+?)\}/', '(.+)', str_replace('.', '\.', $match)).'/'; if (preg_match($pattern, $match, $matches)) { var_dump($match); }
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