Php curly braces to array

Question

I would like to check the open .txt file for brackets that open and close, as shown below:

file { nextopen { //content } } 

No, this is not my own language or anything else, but I want to say the nextopen function and all the contents inside the brackets, as well as all the contents from the inside of the file function and add it to the array if you know what I mean. therefore, all content inside braces will be in an array. if you know how to do this, answer.

the array should look like this:

 array( [file] => '{ nextopen { //content } }', [nextopen] => '{ //content }' ); 

Answer 1

The basic algorithm for this is similar to the following

• for each sequence { no-braces-here } , put it in the buffer and replace it with a magic number identifying its position in the buffer
• repeat (1) until more sequences are found
• for each entry in the buffer - if it contains magic numbers, replace each number with the corresponding line from the buffer.
• The buffer is what we are looking for.

in php

 class Parser { var $buf = array(); function put_to_buf($x) { $this->buf[] = $x[0]; return '@' . (count($this->buf) - 1) . '@'; } function get_from_buf($x) { return $this->buf[intval($x[1])]; } function replace_all($re, $str, $callback) { while(preg_match($re, $str)) $str = preg_replace_callback($re, array($this, $callback), $str); return $str; } function run($text) { $this->replace_all('~{[^{}]*}~', $text, 'put_to_buf'); foreach($this->buf as &$s) $s = $this->replace_all(' ~@ (\d+)@~', $s, 'get_from_buf'); return $this->buf; } } 

Test

 $p = new Parser; $a = $p->run("just text { foo and { bar and { baz } and { quux } } hello! } ??"); print_r($a); 

result

 Array ( [0] => { baz } [1] => { quux } [2] => { bar and { baz } and { quux } } [3] => { foo and { bar and { baz } and { quux } } hello! } ) 

let me know if you have any questions.