Ex: Found: 84 Displaying: 1 - 84
I want to get out the number 84 between Found and Displaying with preg_match but I'm very bad at regular expression.
Do you know what good tutorial to learn regular expression? I can't find a good one on Google.
Edit inserted from comments below:
I just simplify my problem here. The real problem that I will find it in a full HTML page such as google search. You know what i mean right?
If your input will always be in the same format, there's no need to use regular expressions. Instead, just split the string on spaces:
// explode() on spaces, returning at most 2 array elements.
$parts = explode(" ", "Found: 84 Displaying: 1 - 84", 2);
echo $parts[1];
Update If you really really really want to use preg_match() for this, here's how. This is not recommended for an application this simple though.
// Array will hold matched results
$matches = array();
$input = "Found: 84 Displaying: 1 - 84";
// Your regex will match the pattern ([0-9]+) (one or more digits, between Found and Displaying
$result = preg_match("/^Found: ([0-9]+) Displaying/", $input, $matches);
// See what's inside your $matches array
print_r($matches);
// The number you want should be in $matches[1], the first subgroup captured
echo $matches[1];
explode() to a regex question... (I do have 10-20 rep for each, but it's not the same :) )
preg_match(). Heck you could also use trim(substr($str, 6, 4)) if the number is between 10 and 999.Fairly simple regex, I included PHP code that uses it:
<?php
preg_match("/(\d+)/", "Found: 84 Displaying: 1 - 84", $matches);
//$matches[0] should have the first number, i.e. 84
echo $matches[0]; // outputs "84"
?>
http://www.regular-expressions.info/ has some pretty good information about how to write regular expressions.
Edit: as mentioned, regular expressions are overkill in this case, tokenizing works fine.
