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PHP sprintf() Function

PHP sprintf() Function

PHP sprintf() function is used to write a formatted string to a variable. It replaces the percent sign (%) with the variables passed as the argument and returns a formatted string as the output. This function is supported by PHP 4 and above versions.

Syntax:

  sprintf($format,$arg1,$arg2,$arg++);

Parameter Values

Parameter Description
format This is a required parameter. This parameter contains the string and how to format the variables in it. Some of the possible format values:
  • %% - Returns a percent sign.
  • %b – Inserts a binary number.
  • %c – Inserts the character according to the ASCII value.
  • %d – Inserts a signed decimal number.
  • %e – Inserts a scientific notation using a lowercase.
  • %E – Inserts a scientific notation using a uppercase.
  • %u – Inserts a unsigned decimal number.
  • %f – Inserts a floating-point number.
  • %o – Inserts an octal number.
  • %s – Inserts a string.
  • %x – Inserts a hexadecimal number.
arg1 This is a required parameter. This parameter contains the argument to be inserted at the first %-sign.
arg2 This is an optional parameter. This parameter contains the argument to be inserted at the second %-sign.
arg++ This is an optional parameter. This parameter contains the argument to be inserted at the upcoming %-sign.

Here is an example of sprintf() function in PHP:

<html>
<body>

<?php
$age = 20;
$name = "Someone";
sprintf("%s is %u years old.",$name,$age);
?>

</body>
</html>
Output:
Someone is 20 years old.

Here is an another example of sprintf() function in PHP:

<html>
<body>

<?php
$price = 226;
sprintf("%f",$price);
?>

</body>
</html>
Output:
226.000000

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