Trying to find text that contain price in with regular expressions - php

Question

So lets say the text i have is :
<div>
<span>one something 1 $2502</span><br>
<span>
one something 2
</span><br>
<span>one something 3 $25102
</span><br>
<span>
one something 4 $2102</span><br>
</div>
I am trying to make a pattern that will catch all the text between the span so far I've managed to catch the first span no problem but the rest of them I have trouble with
Here is what I got so far:
\>(.*?\$\s*?(\d+\.?\d+).*?)\<
I thought of using something like \>\r*?\n*?(.*?\$\s*?(\d+\.?\d+).*?)>\r*?\n*?\< to catch the others but it won't work

Answer 1

You shouldn't be using regex to match markup languages; as soon as nested tags are involved, things get hairy very quickly. That said, on your examples where there is just plain text between two innermost tags involved, you could give this a try:
>[^<>]*\$\s*(\d+(?:\.\d*)?)[^<>]*<
That will match any text between two >...< delimiters (unless it contains angle brackets itself) that contains at least one number preceded by a $. If it's more than one, it'll capture the last one.
Explanation:
> # Match >
[^<>]* # Match anything besides < or >
\$ # Match $
\s* # Match optional whitespace
( # Match and capture...
\d+ # a number
(?: # possibly followed by:
\.\d* # a dot and optional digits
)? # but make that part optional.
) # End of capturing group
[^<>]* # Match anything besides < or >
< # Match <

Answer 2

<?php
$string = ' <div>
<span>one something 1 $2502</span><br>
<span>
one something 2
</span><br>
<span>one something 3 $25102
</span><br>
<span>
one something 4 $2102</span><br>
</div>';
preg_match_all('~<span>(.+)</span>~Usi', $string, $matches);
print_r($matches[1]);
?>
Works fine for me.

Answer 3

Just picking everything within the span is simple: <span>([^<]*)<\/span>
Let me know if this works for you.
If you only want the price: <span>[^$<]*(\$\d+)[^<]*<\/span> should work

Answer 4

I wouldn't use a regex for this. If you add an id to your div you can easily grab the spans text by using the DOM tools:
var div = document.getElementById('mydiv');
var text = [].slice.call( div.childNodes ).filter(function( node ){
return node.nodeName == 'SPAN'
}).map(function( span ){ return span.innerText });
console.log( text ); //=> ["one something 1 $2502", "one something 2", "one something 3 $25102", "one something 4 $2102"]
Edit: With jQuery what you can do is find a pattern, for example, if you know all the spans you want to grab have a br tag after it you could find them like this:
var $spans = $('span').filter(function(){
return $(this).next('br').length
});
var text = $spans.map(function(){
return $(this).text();
});
If the pattern is not unique then you might have to use regex after all...