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PHP regular use case

2022-06-11 04:15:00 【Know the black and accept the white】

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One 、 string manipulation

1.1 PHP Remove all spaces in the string 

<?php
$string = 'google 123, 456';
$pattern = '/(\w+)(\d+),(\d+)/i';
$replacement = 'phpphp ${2},$
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