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many rows of html text, want a value from each line

text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here

many lines
please tell me how to get
want-this-number
0
rgb192
Asked:
rgb192
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1 Solution
 
Terry WoodsIT GuruCommented:
For the exact text provided, this should work:
preg_match_all('#(?<=<a href="/start\.php\?a=request-link&amp;s=new-york&amp;f=intake&amp;l=)\d+#',$text,$matches);
print_r($matches);

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Terry WoodsIT GuruCommented:
You could also be more flexible in the URLs you accept, such as:

preg_match_all('#<a href="/start\.php[^"]*(?:\?|&amp;)l=(\d+)#',$text,$matches);
print_r($matches[1]);

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Ray PaseurCommented:
Please see http://www.laprbass.com/RAY_temp_rgb192.php

The important part of this question is not so much the part you want to extract, but instead it is the set of rules that describe the surrounding data.  In this case the rules can be inferred from the test data sample, and the test data sample shows exactly the same surrounding data for each element you want.  Maybe that's good enough, but it might be a more interesting and useful question if you got some of the live data and used that for your test set.  Just a thought... ~Ray

<?php // RAY_temp_rgb192.php
error_reporting(E_ALL);

// SEE http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/Q_28158846.html

$txt = <<<EOD
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
EOD;


// START SIGNAL
$a = 'l=';

// STOP SIGNAL
$z = '"';

// MAKE AN ARRAY BY BREAKING STRING ON START SIGNAL
$arr = explode($a, $txt);
unset($arr[0]);

// USE THE STOP SIGNAL TO DECLOP THE ELEMENTS OF THE ARRAY
foreach ($arr as $sub)
{
    $sub = explode($z, $sub);
    $out[] = $sub[0];
}

// SHOW THE EXTRACTED SUBSTRINGS
print_r($out);

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rgb192Author Commented:
Terry's code
Array ( ) Array ( [0] => Array ( ) )


<?php

$text = <<<EOD
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
text here<a href="/start.php?a=request-link&amp;s=new-york&amp;f=intake&amp;l=want-this-number"><img src="/images/start.gif" alt="Start"></a>more text here
EOD;
  preg_match_all('#<a href="/start\.php[^"]*(?:\?|&amp;)l=(\d+)#',$text,$matches);
print_r($matches[1]);


preg_match_all('#(?<=<a href="/start\.php\?a=request-link&amp;s=new-york&amp;f=intake&amp;l=)\d+#',$text,$matches);
print_r($matches);

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rgb192Author Commented:
Ray has the correct answer, not sure if Terry has correct answer

I opened another question asking why Ray's code works
http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/Q_28161784.html
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rgb192Author Commented:
did I implement Terry's code correctly?
0
 
rgb192Author Commented:
Ray had the only answer that I knew how to use.

Thanks
0
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