find word/string in string , do I need regex? - php

Question

I have the following String:
... 12:32 +0304] "GET /test.php?param=value ....
I want to extract the test.php out of this String. I tried to find a php function which could do this but there was nothing helpful. So my next guess was, what about regex and I tried for so long to get the part between GET / and ?. I failed badly...
Does a function in php exists which could help me out or do I need regex for this? If I do so, how can I get a string out of a string? Important, I don't want to know if test.php is in the string. I want to get everything between GET / and ?.

Answer 1

The regex extracting anything between GET / and ? in a capture group:
GET \/(.*?)\?
Demo: https://regex101.com/r/wR9yM5/1
In PHP it can be used like this:
$str = '... 12:32 +0304] "GET /test.php?param=value ....';
preg_match('/GET \/(.*?)\?/', $str, $re);
print_r($re[1]);
Demo: https://ideone.com/0XzZwo

Answer 2

<?php
$string = '... 12:32 +0304] "GET /test.php?param=value ....';
$find = explode("GET /", explode(".php", $string)[0])[1].".php";
echo $find; // test.php
?>

Answer 3

Try this:
(?>(\/))(\w+.php)
Or if You want any extention, 2 or 3 digits:
(?>(\/))(\w+.\w{3})
If only 3, delete "2," from brackets.
PHP CODE:
<?php
$subject='12:32 +0304] "GET /test.php?param=value';
$pattern='/(?>(\/))(\w+.{2,3})/s';
if (preg_match($pattern, $subject, $match))
echo $match[0];
?>

Answer 4

Without regex:
function between_solidus_and_question_mark($str) {
$start = strtok($str, '/');
$middle = strtok('?');
$end = strtok(null);
if($start && $end) {
return $middle;
}
}
$str = '... 12:32 +0304] "GET /test.php?param=value ....';
var_dump(between_solidus_and_question_mark($str));
Outputs:
test.php