CODEWITHSUNDEEP
php
JCunning
JCunning

Reputation: 9

How do you automatically add a '0' in front of any number 1-9 in PHP?

I need a way to be able to automatically add a '0' in front of any number if the number a user enters is a number between 1-9 in PHP. I need this because I am trying to make a 10 character date so that I can search for exercises added to my website between the dates.

The easiest way to do this I thought was to start with a year, then the month, then the day so I get something like this: 2001/04/15. I can just have the user manually add a '0', but I was hoping there was a way to do that automatically.

So far, I have this, but it doesn't work quite right. Can someone help me out here?

Thanks in advance.

//Checks to see if start day is a number 1-9
//If so, adds a '0' at the beginning of the start day variable

    if($_POST['eday'] == 1 || $_POST['eday'] == 2 || $_POST['eday'] == 3 || $_POST['eday'] == 4 ||
    $_POST['eday'] == 5 || $_POST['eday'] == 6 || $_POST['eday'] == 7 || $_POST['eday'] == 8 || 
    $_POST['eday'] == 9) {
    $_POST['eday'] = 0 . $_POST['eday'];

    echo $_POST['eday'] . '<br>';
}

Upvotes: 0

Views: 61

Answers (3)

Fallenreaper
Fallenreaper

Reputation: 10682

Here is another thing: http://www.w3schools.com/php/func_string_str_pad.asp

pad_str($str,20,".");

will pad out to 20 characters of "."

There is and optional 4th parameter.

STR_PAD_BOTH

STR_PAD_RIGHT (Default if not supplied)

STR_PAD_LEFT

so for you:

$str = $_POST['eday'];
pad_str($str,2,"0", STR_PAD_LEFT);

Now $str is set and you can use it where ever you need.

Upvotes: 0

SamyQc
SamyQc

Reputation: 365

You are complicating yourself for nothing dude, you could do it like that :

if($_POST['eday'] < 10) $number = '0'.$_POST['eday'];
else $number = $_POST['eday'];

Upvotes: 0

Barmar
Barmar

Reputation: 780818

Use printf formatting:

printf("%02d<br>", $_POST['eday']);

Upvotes: 2

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