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printf() function in PHP
The printf() function output a formatted string. It returns the length of the outputted string.
Syntax
printf (format, argument1, argument2, ... )
Parameters
format − Specifies the string and how to format the variables in it.
The following are the possible format values −
%% - Returns a percent sign
%b - Binary number
%c - The character according to the ASCII value
%d - Signed decimal number (negative, zero or positive)
%e - Scientific notation using a lowercase (e.g. 1.2e+2)
%E - Scientific notation using a uppercase (e.g. 1.2E+2)
%u - Unsigned decimal number (equal to or greather than zero)
%f - Floating-point number (local settings aware)
%F - Floating-point number (not local settings aware)
%g - shorter of %e and %f
%G - shorter of %E and %f
%o - Octal number
%s - String
%x - Hexadecimal number (lowercase letters)
%X - Hexadecimal number (uppercase letters)
argument1 − The argument to be inserted at the first %-sign in the format string.
argument2 − The argument to be inserted at the second %-sign in the format string.
Return
The printf() function returns the length of the outputted string.
Example
The following is an example −
<?php
$val = 2976;
printf("%f",$val);
?>Output
The following is the output −
2976.000000
Example
Let us see another example −
<?php
$s = "Welcome";
printf("[%s]<b>",$s);
?>Output
The following is the output −
[Welcome]<br>
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