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PHP Reference

Quick Reference

The PHP umask() function changes the file permissions for files.

				
					<?php
$file = 'test.txt';
echo (umask($file));
?>

Output

				
					// sets PHP's umask to mask & 0777 and returns the old umask

Syntax

				
					umask(mask)

Parameters

ParameterDescription
maskSpecifies the new permissions; the mask parameter consists of four numbers (default is 0777):

  • The first number is always zero

  • The second number specifies permissions for the owner

  • The third number specifies permissions for the owner's user group

  • The fourth number specifies permissions for everybody else


Possible values (to set multiple permissions, add up the following numbers):

  • 1 = execute permissions

  • 2 = write permissions

  • 4 = read permissions

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.

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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

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