在PHP中將百分比值轉換爲十進制值

Question

如何將PHP中的百分比值轉換爲十進制值以用於計算？

實施例：6.15％= 0.0615

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;