How can I start a for-loop with 01 instead of 1?

Question

How do I start a for-loop with 01 as opposed to 1? I\'ve tried the below, but it doesn\'t seem to work.

for ($i = 01; $i <= 12;          


        

Answer 1

01 is the octal number 1 (which is equivalent to the decimal 1 in this case). Since you want to format the output to have two digits for the number, consider using printf:

printf("

• % marks the start of a conversion
• 0 means "pad the string with zero"
• 2 means "the replacement should have a minimum length of 2"
• d means "the argument is an integer"

References:

• PHP Manual: printf
• PHP Manual: sprintf