How Can I Zero-Pad Single-Digit Numbers in a String Using PHP?

Zero-Pad Digits in String

Problem:

You need to convert single-digit numbers (1 to 9) into strings with leading zeros (e.g., convert 5 to 05). You're seeking a concise and efficient solution for this task.

Solution:

The sprintf function provides a straightforward way to achieve this:

$s = sprintf('%02d', $digit);

• $digit is the single-digit number you wish to pad with zeros.
• d is a format specifier that indicates that the integer should be right-padded with zeros to a total length of 2 characters.

Additional Notes:

• It's important to note that sprintf returns a string, not a double.
• For more information on sprintf, refer to its PHP documentation.

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