Batch script to replace PHP short open tags with

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don’t use regexps for parsing formal languages – you’ll always run into haystacks you did not anticipate. like:

<?
$bla="?> now what? <?";

it’s safer to use a processor that knows about the structure of the language. for html, that would be a xml processor; for php, the built-in tokenizer extension. it has the T_OPEN_TAG parser token, which matches <?php, <? or <%, and T_OPEN_TAG_WITH_ECHO, which matches <?= or <%=. to replace all short open tags, you find all these tokens and replace T_OPEN_TAG with <?php and T_OPEN_TAG_WITH_ECHO with <?php echo .

the implementation is left as an exercise for the reader 🙂

EDIT 1: ringmaster was so kind to provide one.

EDIT 2: on systems with short_open_tag turned off in php.ini, <?, <%, and <?= won’t be recognized by a replacement script. to make the script work on such systems, enable short_open_tag via command line option:

php -d short_open_tag=On short_open_tag_replacement_script.php

p.s. the man page for token_get_all() and googleing for creative combinations of tokenizer, token_get_all, and the parser token names might help.

p.p.s. see also Regex to parse define() contents, possible? here on SO

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