This should take care of what you just described in your comment:
echo str_pad(strlen("hello"), 3 , "0", STR_PAD_LEFT);
This will return
005
题
this is a really noob question I guess, but I am very new to php and have no idea how to even begin this one, basically I have a set of $vars that I have to display the length of as a 3 digit number that is right justified.
Any pointers as to how to do this?
Many thanks for all your help.
解决方案
This should take care of what you just described in your comment:
echo str_pad(strlen("hello"), 3 , "0", STR_PAD_LEFT);
This will return
005
其他提示
Your answer lies within PHP documentation: http://php.net/manual/en/function.str-pad.php
From their 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_"
?>
The printf version:
printf("%40d", 123); // 123
40 chars right justified