(PHP 4 >= 4.0.1, PHP 5, PHP 7, PHP 8)
str_pad — Pad a string to a certain length with another string
$string,$length,$pad_string = " ",$pad_type = STR_PAD_RIGHT
This function returns the string 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
string is padded with spaces, otherwise it
is padded with characters from pad_string
up to the limit.
stringThe input string.
length
The desired length of the final padded string.
If the value of length is negative,
less than, or equal to the length of the input string, no padding
takes place, and string will be returned.
pad_stringNote:
The
pad_stringmay be truncated if the required number of padding characters can't be evenly divided by thepad_string's length.
pad_type
Optional argument pad_type can be
STR_PAD_RIGHT, STR_PAD_LEFT,
or STR_PAD_BOTH. If
pad_type is not specified it is assumed to be
STR_PAD_RIGHT.
Returns the padded string.
Example #1 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($input, 6, "___"); // produces "Alien_"
echo str_pad($input, 3, "*"); // produces "Alien"
?>