RegExp修复php标签

Question

I made a website using php. In some places I put these php tags <?php ?> in other places just those <? ?> <? ?> .

After doing a server migration the latter tags do not work because of php version differences. The new server understands only these tags <?php ?> .

Is there any easy regular expression that you can provide me to replace all <? some php code here ?> <? some php code here ?> to <?php some php code here ?> .

Answer 1

You have two possibilities here:

1. Enable the short tags with short_open_tag=On in php.ini
2. You could use a negative lookahead: <\\?(?!php) , these needs to be replaced with <?php , see a demo on regex101.com .