Php uses str_pad to automatically add 0 digits if the card number is not enough. str_pad card number _ PHP Tutorial

The str_pad card number is used by php to automatically fill in the number of digits below the number of digits based on str_pad. Php uses the str_pad method to automatically add 0 digits when the card number is insufficient. the str_pad function can help us implement the str_pad function in php () the function fills the string in php. based on str_pad, the function automatically fills in the number of digits that are not enough. The str_pad card number

The str_pad function can automatically fill in the blank digits in php to help us implement it. the str_pad () function fills the string with the specified length.

The str_pad () function fills the string with the specified length.
Syntax
Str_pad (string, length, pad_string, pad_type)

Parameters	Description
String	Required. Specifies the string to be filled.
Length	Required. Specify the length of the new string. If the value is smaller than the length of the original string, no operation is performed.
Pad_string	Optional. The specified string for filling. The default value is blank.
Pad_type	Optional. Specify the other side of the string to be filled. Possible values: STR_PAD_BOTH-fill in the two ends of the string. If it is not an even number, the right side will receive additional filling. STR_PAD_LEFT-fill in the left side of the string. STR_PAD_RIGHT-fill in the string to the right. This is the default one.

Example:

The code is as follows:

$ CardCount = 10;
$ Arr = array ();
For ($ I = 1; $ I <= $ cardCount; $ I ++ ){
$ StrCard = str_pad ($ I, 10, '0', STR_PAD_LEFT );
$ Arr [] = $ strCard;
}
Print_r ($ arr );

The output result is as follows:

The code is as follows:

Array ([0] => 0000000001 [1] => 0000000002 [2] => 0000000003 [3] => 0000000004 [4] => 0000000005 [5] => 0000000006 [6] => 0000000007 [7] => 0000000008 [8] => 0000000009 [9] => 0000000010)

I hope this article will help you with PHP programming.

The str_pad function in php can help us implement the padding function automatically. the str_pad () function fills the string...