How can I split PHP up and reuse parts of it? -

i'm trying split line of php up, reason being don't need of code , can reuse parts of it.

the main reason i'm doing because currency shows more digits currencies e.g. 1.2562 instead of 1.25, want use substr function on get's , able modify other get's.

http://prntscr.com/6ttw8o

symbol required, substr isn't, $converter required, end part of substr isn't can change, new currency required.

$symbol[2] . substr(($converter->convert($defaultcurrency, $newcurrency) * 1),  0, 4) . " <b>" .$newcurrency. "</b>"; 

i've tried doing explode, i'm not entirely sure how have never had split before i'm little puzzled on how go it.

once code has gone through checking current 1 set, want grab specified split code pieces , output it.

put code in function this:

function formatcurrency($symbol, $converter, $defaultcurrency, $newcurrency, $factor=1.0, $suffix="", $substrchars=0) {     if($substrchars>0) {         return $symbol . substr(($converter->convert($defaultcurrency, $newcurrency) * $factor),  0, $substrchars) . $suffix . " <b>" . $newcurrency. "</b>";     } else {         return $symbol . ($converter->convert($defaultcurrency, $newcurrency) * $factor) . $suffix . " <b>" . $newcurrency. "</b>";     }  } 

if call without $substrchars parameter, omit substr() call, otherwise strip first $substrchars characters:

if( $_get['currency'] === "gbp" ){     $newcurrency = $_get['currency'];     $string = formatcurrency($symbol[1], $converter, $defaultcurrency, $newcurrency, 2.0, ".00", 0); } elseif( $_get['currency'] === "usd" ){     $newcurrency = $_get['currency'];     $string = formatcurrency($symbol[2], $converter, $defaultcurrency, $newcurrency, 1.0, "", 4); } 

this solution readable because see difference between 2 branches in conditional statement.