regular expression for page scraping - php

Question

I'm trying to write a page scraping script to take a currency of a site. I need some help writing the regular expression.
Here is what I have so far.
<?php
function converter(){
// Create DOM from URL or file
$html = file_get_contents("http://www.bloomberg.com/personal- finance/calculators/currency-converter/");
// Find currencies. ( using h1 to test)
preg_match('/<h1>(.*)<\/h1>/i', $html, $title);
$title_out = $title[1];
echo $title_out;
}
$foo = converter();
echo $foo;
?>
Here is where the currencies are kept on the Bloomberg site.
site: http://www.bloomberg.com/personal-finance/calculators/currency-converter/
//<![CDATA[
var test_obj = new Object();
var price = new Object();
price['ADP:CUR'] = 125.376;
What would the expression look like to get that rate?
Any help would be great!!

Answer 1

This works for me - does it need to be more flexible? And does it need to take various whitespace - or is it alway exactly one space? (around the equal sign)
"/price\['ADP:CUR'\] = (\d+\.\d+/)"
Usage:
if(preg_match("/price\['ADP:CUR'\] = (\d+\.\d+)/", $YOUR_HTML, $m)) {
//Result is in $m[1]
} else {
//Not found
}

Answer 2

there you go:
/ADP:CUR[^=]*=\s*(.*?);/i

Answer 3

This returns an associate array identical to the javascript object on the bloomberg site.
<?php
$data = file_get_contents('http://www.bloomberg.com/personal-finance/calculators/currency-converter/');
$expression = '/price\\[\'(.*?)\'\\]\\s+=\\s+([+-]?\\d*\\.\\d+)(?![-+0-9\\.]);/';
preg_match_all($expression, $data, $matches);
$array = array_combine($matches[1], $matches[2]);
print_r($array);
echo $array['ADP:CUR'];// string(7) "125.376"
?>