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PHP preg_filter() 函数
tryphp_func_regex_preg_filter
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<!DOCTYPE html> <html> <body> <?php $input = [ "It is 5 o'clock", "40 days", "No numbers here", "In the year 2000" ]; $result = preg_filter('/[0-9]+/', '($0)', $input); print_r($result); ?> </body> </html>