iamtom Posted November 16, 2008 Share Posted November 16, 2008 Thnaks in advance for any pointers... I have a data filed that is 4 characters long, It is set to hold 4 numbers XXXX I and using it to hold the last 4 of credit card number , $last4 = substr($Ccrd, -4, 4); My problem is when any on the first characters are 0's it does not show them, so I get " 145" when I should get "0145". How can I prevent this and show the leading 0 ? Thanks Tom Link to comment https://forums.phpfreaks.com/topic/132942-leading-zeros/ Share on other sites More sharing options...
ddrudik Posted November 16, 2008 Share Posted November 16, 2008 That doesn't seem to follow with how strings work, consider this code: <?php $Ccrd="1234123412340001"; $last4 = substr($Ccrd, -4, 4); echo $last4; ?> output: 0001 Possibly show the code where you assign $Ccrd. Link to comment https://forums.phpfreaks.com/topic/132942-leading-zeros/#findComment-691333 Share on other sites More sharing options...
corbin Posted November 16, 2008 Share Posted November 16, 2008 He means it's 145 in the database.... @OP google zerofill. Link to comment https://forums.phpfreaks.com/topic/132942-leading-zeros/#findComment-691335 Share on other sites More sharing options...
gevans Posted November 16, 2008 Share Posted November 16, 2008 Store the number as a string instead of a number $number = 0055; echo $number;//prints 55 $number = "0055"; echo $number;//prints 0055 <?php $Ccrd="1234123412340001"; $last4 = settype(substr($Ccrd, -4, 4), "string"); echo $last4; ?> too the last bit of code from ddrudik, just need to set it as a string Link to comment https://forums.phpfreaks.com/topic/132942-leading-zeros/#findComment-691339 Share on other sites More sharing options...
.josh Posted November 16, 2008 Share Posted November 16, 2008 sprintf Link to comment https://forums.phpfreaks.com/topic/132942-leading-zeros/#findComment-691340 Share on other sites More sharing options...
ddrudik Posted November 16, 2008 Share Posted November 16, 2008 He means it's 145 in the database.... I see where everyone's going with the question, it's just that the code and output shown in the question do not match with a string or number designation, consider: <pre> <?php $Ccrd="1234123412340145"; $last4 = substr($Ccrd, -4, 4); echo "[$last4]<br>"; $Ccrd=1234123412340145; $last4 = substr($Ccrd, -4, 4); echo "[$last4]"; ?> output: [0145] [0100] Link to comment https://forums.phpfreaks.com/topic/132942-leading-zeros/#findComment-691507 Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.