fix: Removed files accidentally added on PR 27489 (#35469)
This commit is contained in:
Randell Dawson
Valeriy
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---
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title: Cookies
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---
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## Cookies
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Definition: A cookie is a small file that the server embeds on the user's computer. Each time the same computer requests a page with a browser, it will send the cookie too. With PHP, you can both create and retrieve cookie values. The name of the cookie is automatically assigned to a variable of the same name.
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#### More Information:
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<!-- Please add any articles you think might be helpful to read before writing the article -->
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- [PHP setcookie() Function](https://www.w3schools.com/php/func_http_setcookie.asp)
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---
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title: Date
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---
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## Date
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This is a stub. <a href='https://github.com/freecodecamp/guides/tree/master/src/pages/php/functions/date/index.md' target='_blank' rel='nofollow'>Help our community expand it</a>.
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<a href='https://github.com/freecodecamp/guides/blob/master/README.md' target='_blank' rel='nofollow'>This quick style guide will help ensure your pull request gets accepted</a>.
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<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds -->
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#### More Information:
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<!-- Please add any articles you think might be helpful to read before writing the article -->
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---
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title: Die and Exit
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---
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## Die and Exit
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The `die()` and `exit()` functions are identical. They each take one argument (a string) containing an error message. Upon being run they output the message and immediately halt execution of the script.
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```PHP
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<?php
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die('Die() function was run');
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```
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```PHP
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<?php
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exit('Exit() function was run');
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```
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#### More Information:
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* <a href="https://secure.php.net/manual/en/function.die.php" rel="nofollow">php.net die() manual</a>
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* <a href="https://secure.php.net/manual/en/function.exit.php" rel="nofollow">php.net exit() manual</a>
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---
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title: Echo and Print
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---
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## Echo and Print
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The echo and print functions provide a way to write out the value of a variable or argument to the screen.
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### echo
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The `echo()` function writes out the value of a variable or argument to the screen.
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```PHP
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<?php
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echo "freeCodeCamp";
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```
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NOTE: A short hand way to open the PHP tag and echo is <?=
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```
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<?= "freeCodeCamp"; ?>
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```
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### print
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The `print()` function out the value of a variable or argument to the screen.
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```PHP
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<?php
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print "freeCodeCamp";
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```
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### print_r
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The `print_r()` function writes out the value of any variable (such as an array) or argument to the screen, unlike the echo or print functions which are more limited.
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```PHP
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<?php
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$freecodecamp = "freeCodeCamp";
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print_r($freecodecamp);
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```
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#### More Information:
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* <a href="https://secure.php.net/manual/en/function.echo.php" rel="nofollow">php.net echo() manual</a>
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* <a href="https://secure.php.net/manual/en/function.print.php" rel="nofollow">php.net print() manual</a>
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* <a href="https://secure.php.net/manual/en/function.print-r.php" rel="nofollow">php.net print_r() manual</a>
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---
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title: File Reading
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---
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## File Reading
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This is a stub. <a href='https://github.com/freecodecamp/guides/tree/master/src/pages/php/functions/files/reading/index.md' target='_blank' rel='nofollow'>Help our community expand it</a>.
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<a href='https://github.com/freecodecamp/guides/blob/master/README.md' target='_blank' rel='nofollow'>This quick style guide will help ensure your pull request gets accepted</a>.
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<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds -->
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#### More Information:
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<!-- Please add any articles you think might be helpful to read before writing the article -->
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---
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title: File Uploading
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---
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## File Uploading
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This is a stub. <a href='https://github.com/freecodecamp/guides/tree/master/src/pages/php/functions/files/uploading/index.md' target='_blank' rel='nofollow'>Help our community expand it</a>.
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<a href='https://github.com/freecodecamp/guides/blob/master/README.md' target='_blank' rel='nofollow'>This quick style guide will help ensure your pull request gets accepted</a>.
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<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds -->
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#### More Information:
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<!-- Please add any articles you think might be helpful to read before writing the article -->
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---
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title: Files
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---
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## Files
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PHP provides several functions for working with files. These functions allow the developer to enable user file uploads, for php to read and use data from a file, and lastly for php to write data to a file.
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#### More Information:
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* <a href="https://secure.php.net/manual/en/function.readfile.php" rel="nofollow">php.net readfile() manual</a>
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* <a href="https://secure.php.net/manual/en/function.fopen.php" rel="nofollow">php.net fopen() manual</a>
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* <a href="https://secure.php.net/manual/en/function.fread.php" rel="nofollow">php.net fread() manual</a>
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* <a href="https://secure.php.net/manual/en/function.fclose.php" rel="nofollow">php.net fclose() manual</a>
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* <a href="https://secure.php.net/manual/en/function.fgets.php" rel="nofollow">php.net fgets() manual</a>
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* <a href="https://secure.php.net/manual/en/function.feof.php" rel="nofollow">php.net feof() manual</a>
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* <a href="https://secure.php.net/manual/en/function.fgetc.php" rel="nofollow">php.net fgetc() manual</a>
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---
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title: Functions
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---
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## PHP Functions Introduction
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A function is a block of statements that can be used repeatedly in a program.
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### Simple Function + Call
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```php
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function say_hello() {
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return "Hello!";
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}
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echo say_hello();
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```
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### Simple Function + Parameter + Call
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```php
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function say_hello($friend) {
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return "Hello " . $friend . "!";
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}
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echo say_hello('Tommy');
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```
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### strtoupper - Makes all Chars BIGGER AND BIGGER!
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```php
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function makeItBIG($a_lot_of_names) {
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foreach($a_lot_of_names as $the_simpsons) {
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$BIG[] = strtoupper($the_simpsons);
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}
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return $BIG;
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}
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$a_lot_of_names = ['Homer', 'Marge', 'Bart', 'Maggy', 'Lisa'];
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var_dump(makeItBIG($a_lot_of_names));
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```
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## strtolower Function
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The strtolower() function converts a string to lowercase.
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```
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<?php
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echo strtolower("Hello WORLD."); //hello world.
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?>
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```
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#### More Information:
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* <a href="https://secure.php.net/manual/en/functions.user-defined.php">php.net user defined functions manual</a>
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---
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title: Time
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---
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## Time
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The `time()` function returns the current unix timestamp (number of seconds since the Unix Epoch - January 1 1970 00:00:00 GMT).
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### Example
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```php
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<?php
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echo time();
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```
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**Output:**
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```text
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1511732226
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```
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#### More Information:
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* <a href="https://secure.php.net/manual/en/function.time.php">php.net time() manual</a>
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