looping

[avo]

HI

 

Can anyone help me out here please

what i would like to do is loop through the given url ($url_fetched)

for more instances of the given parameters ($start_string to $end string)

the bellow code will echo our what it finds between start and end but i need it to keep looking for these instances until none are left then return false until then return the string ($extractedstring).

 

this is what i have so far

 

function split_string($url_fetched,$start_string,$end_string){
$string = $url_fetched;
$m1     = $start_string;
$m2     = $end_string;

$extractedstring = substr($string,strpos($string,$m1)+strlen($m1),(strpos($string,$m2,strpos($string,$m1)+strlen($m1))-(strpos($string,$m1)+strlen($m1))));
return $extractedstring ;

 

 

 

by just using this function as it is it will output something like.

 

$page = "http://www.phpfreaks.com"; 
<?=split_string ($page,'PHP' ,'your');?>

 

output:-

Freaks.com:

 

but if the page had multiple instances of PHP 'some text i want' your i would only get Freaks.com: as its the first instance

 

hope this made sense.

 

Regards.

 

[btherl]

There's a number of ways to approach this.  Using regexp is probably most efficient, but if you're not willing to learn the dark arts yet you can do it with strpos() and substr().  Try this (including the missing end of the function):

 

function split_string($url_fetched,$start_string,$end_string){
$string = $url_fetched;
$m1     = $start_string;
$m2     = $end_string;
        
        $extracted = array();
        while ($offset < strlen($string) {
                $m1_offset = strpos($string, $m1);
                $m2_offset = strpos($string, $m2);
                if ($m1_offset !== false) {
                        $extracted[] = substr($string, $m1_offset, ($m2_offset - $m1_offset));
                        $string = substr($string, $m2_offset + strlen($m2)); # Remove matched portion from input
                } else {
                        break; # Finish loop, no more mathes
                }
        }
        return $extracted;
}

 

I have not tested this code, but the algorithm should work.  Basically it chops off the matched portion after finding a match, ensuring that the next match will be found next time around the loop.

[avo]

Hi

 

Thank you !!!

 

Just tested the code but its giving me some troubles.

 

i corrected an error on the while line )

 

when tested instead of it outputing the found data it output array

 

Any ideas please

 

all appreciated.

[btherl]

I made it return an array because there are many strings matched.  Do you want all the strings to be stuck together into one long string?