Extract strings from php

I need to extract strings from txt file

example :

<itrader="1" utrader="2334">
<itrader="2" utrader="5436">
<itrader="3" utrader="4326">
<itrader="4" utrader="9789">
<itrader="5" utrader="6388">

to :

Itrader = 1
Utrader = 2334
Itrader = 2
Utrader = 5436
Itrader = 3
Utrader = 4326
Itrader = 4
Utrader = 9789
Itrader = 5
Utrader = 6388


Please help me with this

 

If your string data is always like your example, then this function is what you need.

<?php

# Here's the function

function extract_data($string) {
	
	$string = str_replace('<', '', $string);
	$string = str_replace('>', '', $string);
	$string = str_replace('"', '', $string);

	$data = array();
	$count = 0;
	
	$array1 = explode("\n", $string);
	foreach ($array1 as $item) {
		$array2 = explode(' ', $item);
		foreach ($array2 as $item2) {
			$array3 = explode('=', $item2);
			if (strlen(trim($array3[0]))>0) {
				$data[$count][trim($array3[0])] = trim($array3[1]);
			}
		}
		$count++;
	}
	
	return $data;
	
}

# This is how you use this function.

$string = '

	<itrader="1" utrader="2334">
	<itrader="2" utrader="5436">
	<itrader="3" utrader="4326">
	<itrader="4" utrader="9789">
	<itrader="5" utrader="6388">

';

$data = extract_data($string);

# The result of the function is an array data 
# containing the itrader and utrader counts.

print_r($data);

?>

PHP:

 

Yah thanks rep added

 

Here's another method:

<?php
function extract_data($string)
{
	preg_match_all('/<itrader="(\d+?)" utrader="(\d+?)">/', $string, $matches);
	foreach($matches[1] as $key => $value)
		$data[$value] = $matches[2][$key];
	return $data;
}
?>

PHP:

 

If I were you, I would go with brendandonhue's method. Less code, and most likely a lot quicker to process.

 

You could also use array_combine() (I try to avoid loops whenever possible)

function extract_data($string)
{
    preg_match_all('/<itrader="(\d+?)" utrader="(\d+?)">/', $string, $matches);
    return array_combine($matches[1], $matches[2]);
}

PHP:

 

I found the code from brendandonhue thanks

 

array_combine() is PHP5 only.

 

Which everybody should be using by now, as PHP 4 is officially dead.

 

Unfortunately, lots of hosts are still using PHP4. IMO, may as well add 2 lines of code for the compatibility, IMO, but either way works.

 

I see your point.

Though, I'm trying to make people upgrade first, and only if there's no way for them to upgrade, then I post the PHP 4 solution/change. I've been doing it like this for a while. Just doing my best trying to kill PHP 4.