CODEWITHSUNDEEP
phpregex
Nate
Nate

Reputation: 577

php regex to match template tags

I have a some template tags in a PHP file that I can't seem to match with a regular expression. Actually, what I'm using I've made work before but I can't make it work this time. All the template tags will look like this {$EXAMPLE}, two squigglies surrounding a dollar sign followed by anything. Actually, the word example will always be uppercase and may contain underscores or dashes, but that part isn't really necessary. What I have already is this:

Template file:

{$HEADER}
{$MENU}
{$BODY}
{$FOOTER}

PHP file:

$template = file_get_contents(TEMPLATE);
preg_match_all('^{$.*}^U', $template, $matches);
var_dump($matches);

where var_dump outputs an empty array.

Upvotes: 0

Views: 890

Answers (3)

user2680766
user2680766

Reputation:

Since the curly braces and the dollar sign are meta-characters, you need to escape them with backslashes. Change your regular expression from ^{$.*}^U to ^\\{\\$.*\\}^U and your code will work perfectly.

Upvotes: 1

Awlad Liton
Awlad Liton

Reputation: 9351

Try this:

$template = file_get_contents(TEMPLATE);
preg_match_all('/^(\{\$.*\})^U/', $template, $matches);
var_dump($matches);

See live demo here: http://rubular.com/r/52kKX0dIdl

Upvotes: 1

Casimir et Hippolyte
Casimir et Hippolyte

Reputation: 89557

You can use this:

preg_match_all('~{\$[^}]+}~', $template, $matches); // negated character class + greedy quantifier

or

preg_match_all('~{\$[A-Z_-]+}~', $template, $matches); // follows your description

Upvotes: 1

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