Get specific values from PHP Array - php

Question

I'd like to get some values out of an array and print them out on the page.
For [1], these things should be extracted: USD 7.0269 6.4119 0.14231 0.15596
The array looks like this:
print_r($arr);
[1] => USD United States of America 7.0269 6.4119 Dollars 0.14231 0.15596 � Copyright 2003-2011. Powered by CurrencyXchanger 3.580
[2] => EUR Euro Member Countries 9.0373 8.3253 Euro 0.1107 0.1201 � Copyright 2003-2011. Powered by CurrencyXchanger 3.580
What is the best solution to accomplish this?

Answer 1

I'd use preg_match_all() after I trim off the area of interest:
foreach ($arr as $line) {
// currency is in the first four characters (apparently)
$currency = substr($line, 0, 4);
// we use everything left of 'Copyright'
$rest = strstr($line, 'Copyright', true);
// match each occurrence of nn.nnnn
if (preg_match_all('/\d+\.\d+/', $rest, $matches)) {
// $matches[0] contains all the amounts
echo $currency, ' ', join(' ', $matches[0]), PHP_EOL;
}
}
For PHP < 5.2 you need this line to calculate $rest:
$rest = substr($line, 0, strpos($line, 'Copyright'));
Demo

Answer 2

Here is a regex solution:
foreach($arr as $key => $item)
{
preg_match('/^([A-Z]){3}[\sA-Za-z]+(\d+\.\d+)\s+(\d+\.\d+)\s+[A-Za-z]+\s+(\d+\.\d+)\s+(\d+\.\d+)/', $item, $matches);
$result[$key] = array_shift($matches);
}
The regex corresponds to your pattern and captures everything you want inside consecutive elements of $matches. Since $matches[0] represents the full match, we remove the first element and assign it to your result array.

Answer 3

Try
foreach($arr as $v) {
$items = explode(' ', $v);
$new_arr[] = $items[0]; //Getting the currency type
foreach($items as $k => $m) {
if(is_numeric($m) && floor($m) != $m && $k != (count($items) - 1))
$new_arr[] = $m;
}
}
//displaying the $new_arr
foreach($new_arr as $n) {
if(is_numeric($n) === FALSE)
echo "\n";
echo $n . ' ';
}
See it in action here

Answer 4

Done quickly:
$result = array_map(
function ($string) {
preg_match_all('/(\d+\.\d+)\s/', $string, $matches);
return substr($string, 0, 3) . ' ' . implode(' ', $matches[1]);
},
$arr
);
Result:
Array
(
[0] => USD 7.0269 6.4119 0.14231 0.15596
[1] => EUR 9.0373 8.3253 0.1107 0.1201
)

Answer 5

With Regular Expressions you can get it.
foreach($arr as $key => $value) {
preg_match_all('/(\d+\.\d+)/', $value, $matches);
$result[substr($value, 0, 3)] = array_shift($matches);
}
You get an Array like this
var_dump($result);
array (
'USD' => array( 7.0269, 6.4119, 0.14231, 0.15596 )
'EUR' => array( 9.0373, 8.3253, 0.1107, 0.1201 )
)