a little help please!

[daydreamer]

I am trying to get a number from a string that will be in the range of 0.00 to 99.99.

 

It will occur in the string like this:

 

   <p><em class="example">
			                     3.30
							</em></p>

 

spaces included!

 

here is what i have so far:

 

<?php
preg_match("/(?=\"example\"> \s)[0-9]\.[0-9][0-9]+/",$xxx,$matches);
print_r($matches);
?>

 

What do i need to change?

 

thanks.

[effigy]

<pre>
<?php
$data = <<<DATA
   <p><em class="example">
			                     3.30
							</em></p>
DATA;
preg_match('/<em class="example">\s*(\d{1,2}.\d{2})/', $data, $matches);
array_shift($matches);
print_r($matches);
?>
</pre>

[daydreamer]

thanks alot! it works exactly how i need it to. been trying for ages.

 

anyway, how come 3.30 gets saved into the array but "<em class="example">" does not?

 

is it because that part of the expression is inside brackets?

 

cheers!

 

[effigy]

The whole pattern is stored in index 0, and the parenthetical content is stored in subsequent numbers. array_shift($matches); removed the entire pattern match.

[nrg_alpha]

Perhaps I'm splitting hairs here (I get the sense I am).. but I noticed the dot is not escaped in the pattern (thus it will capture any single character between the set of digits). depending on the data found in <em class="example">, the current pattern could find '3-30' for example. If there is a possibility to have something other than the dot between digits, would you not need to escape it in the pattern?

 

preg_match('/<em class="example">\s*(\d{1,2}\.\d{2})/', $data, $matches);

 

But again, depending on how the data that is found in <em class="example"> is decided / filtered, it probably doesn't matter?

[DarkWater]

Oh, good catch.