How to parse a file in PHP - php

Question

I have a string with the following content
[text1] some content [text2] some
content some content [text3] some
content
The "[textn]" are finite and also have specific names. I want to get the content into an array. Any idea?

Answer 1

If you don't wanna use regular expressions, then strtok() would do the trick here:
strtok($txt, "["); // search for first [
while ($id = strtok("]")) { // alternate ] and [
$result[$id] = strtok("["); // add token
}

Answer 2

In php there are function for splitting the string with regexp delimiters, like preg_match, preg_match_all, look them up.
If you have a word list, you can split the string like this (obviously, one could write it much nicer):
$words = array('[text1]','[text2]','[text3]');
$str = "[text1] some content [text2] some content some content [text3] some content3";
for ($i=0; $i<sizeof($words) ; $i++) {
$olddel = $del;
$del = $words[$i];
list($match,$str) = explode($del,$str);
if ($i-1 >= 0) { $matches[$i-1] = $olddel.' '.$match; }
}
$matches[] =$del." ".$str;
print_r($matches);
This will output: Array ( [0] => [text1] some content [1] => [text2] some content some content [2] => [text3] some content3 )

Answer 3

preg_match or preg_match_all, you need to give us an example if you want regex.
$string = "[text1] some content [text2] some content some content [text3] some content";
preg_match_all("#\[([^\[\]]+)\]#is", $string, $matches);
print_r($matches); //Array ( [0] => Array ( [0] => [text1] [1] => [text2] [2] => [text3] ) [1] => Array ( [0] => text1 [1] => text2 [2] => text3 ) )
Non-recursive.

Answer 4

Is [ and ] part of the string or did you just use them to highlight the part that you want to extract? If it is not, then you can use
if (preg_match_all("/\b(text1|text2|text3|foo|bar)\b/i", $string, $matches)) {
print_r($matches);
}