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str_pad
Pad a string to a certain length with another string
(PHP 4 >= 4.0.1, PHP 5)
string str_pad ( string input, int pad_length [, string pad_string [, int pad_type]] )
This functions returns the input string padded on the left, the right, or both sides to the specified padding length. If the optional argument pad_string is not supplied, the input is padded with spaces, otherwise it is padded with characters from pad_string up to the limit.
Parameters
- input
The input string.
- pad_length
If the value of pad_length is negative or less than the length of the input string, no padding takes place.
- pad_string
- Note:
The pad_string may be truncated if the required number of padding characters can't be evenly divided by the pad_string's length.
- pad_type
Optional argument pad_type can be
STR_PAD_RIGHT,STR_PAD_LEFT, orSTR_PAD_BOTH. If pad_type is not specified it is assumed to beSTR_PAD_RIGHT.
Examples
Example 2444. str_pad() example
<?php
$input = "Alien";
echo str_pad($input, 10); // produces "Alien "
echo str_pad($input, 10, "-=", STR_PAD_LEFT); // produces "-=-=-Alien"
echo str_pad($input, 10, "_", STR_PAD_BOTH); // produces "__Alien___"
echo str_pad($input, 6 , "___"); // produces "Alien_"
?>