php code to check on the credit card number if it’s prepaid or not

my client has a limelight CRM , and need me to check on the entered credit card number if it's prepaid cards or not ??

does anyone here did this check before, i need the customer when he enters the card number, i take this number and check if it's prepaid card or not ??

the limelight CRM has this option called prepaid filtered , and if it had this option , that's mean it's applicable on PHP

please help me urgently

thank you

Filed under: php