Converti valore percentuale in valore decimale in PHP

Question

Come convertire il valore percentuale in valore decimale in PHP da utilizzare in un calcolo?

Esempio: 6,15% = .0615

Answer 1

$dec = $pct/100; 

// if you actually have a % sign in $pct strip it out 
$pct = '15%'; 
$dec = str_replace('%', '', $pct)/100; 

Answer 2

function percentToDecimal($percent) 
{ 
    $percent = str_replace('%', '', $percent); 
    return $percent/100; 
} 

Answer 3

echo floatval("6.15%")/100;