How to use printf in PHP

Posted in PHP | PHP Functions on September 07, 2019

In this article I will explain how the printf() function can be used in PHP.

printf() function in PHP

The printf() function is used to output a formatted string.
In printf() function, The arg1, arg2, ++ parameters will be added at percent (%) signs in the main string.
The printf() function works "step-by-step".
In printf() function, you must use placeholders, If there are more % signs than arguments

Syntax

printf(format,arg1,arg2,arg++)

Parameter

format format is required parameter. Determine the string and how to format the variables in it.
Possible format values:
- %% - It's return a percent sign.
- %b - It is represent binary number.
- %c - The character according to the ASCII value.
- %d - It is represent signed decimal number.
- %e - It is represent scientific notation.
- %u - It is represent unsigned decimal number.
- %f - It is represent floating-point number.
- %F - It is represent floating-point number.
- %o - It is represent octal number.
- %s - It is represent String.
- %x - It is represent Hexadecimal number (lowercase letters).
- %X - It is represent Hexadecimal number (uppercase letters).
Additional format values. These are placed between the % and the letter.
- + (Forces both + and - in front of numbers. By default, only negative numbers are marked)
- ' (Specifies what to use as padding. Default is space. Must be used together with the width specifier)
- - (Left-justifies the variable value)
- [0-9] (Specifies the minimum width held of to the variable value)
- .[0-9] (Specifies the number of decimal digits or maximum string length)
arg1 arg1 is required parameter. The argument to be inserted at the first %-sign in the format string.
arg2 arg2 is optional parameter. The argument to be inserted at the second %-sign in the format string.
arg++ arg++ is optional parameter. The argument to be inserted at the third, fourth, etc. %-sign in the format string.

Example

The following example show to how the printf() function can be used in PHP.

<html>

<body>

<h3 style="color: darkblue;">printf() function example in PHP</h3>

<?php

$str = "Hello";

$num = 999;

printf("%s C-sharpcorner user. you visit number is %u",$str,$num);

</body>

</html>

Output

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