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@ 2021-11-28T13:05:28Z

<?php

$text = 'The $girl$ is a $good$ person';
echo preg_replace('/\$[^\s$]+\$/', '\$$0\$', $text);

Output
Performance
VLD
References
Branches

preg_replace: documentation ( source)

preferences:dark modelive previewkey bindings

55.94 ms | 1384 KiB | 5 Q