PHP Reference
Tags:
Categories: , ,

Quick Reference

The PHP fscanf() function parses the input from an open file according to the specified format.

<?php
$file = fopen('test.txt', 'r') ;
$data = fscanf($file, '%s%s') ;

foreach($data as $value) {
    var_dump($value)  ;
}
?>

Output

// parses input from the file according to the format

Syntax

fscanf(file, format, vars)

Parameters

ParameterDescription
fileSpecifies the file to check (required)
formatSpecifies the format (required)

  • %% - Returns a percent sign

  • %b - Binary number

  • %c - The character according to the ASCII value

  • %d - Signed decimal number

  • %e - Scientific notation (e.g. 1.2e+2)

  • %u - Unsigned decimal number

  • %f - Floating-point number (local settings aware)

  • %F - Floating-point number (not local settings aware)

  • %o - Octal number

  • %s - String

  • %x - Hexadecimal number (lowercase letters)

  • %X - Hexadecimal number (uppercase letters)


Other formatting placed between the % and the letter (example %.2f):

  • + (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. Example: %'x20s (this uses "x" as padding)

  • - (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)
varsOptional assigned values

PHP Notes:

  • When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
  • Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
If you like our content, and find it helpful, please consider making a small donation. Thank you!

We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.