Some cool things from the world of PHP
1 Built-in web server
Most PHP developers don't know that since PHP 5.4 the language comes with an integrated development server, which means that you don't need to set up an Apache Virtual Host for developing your project.
In the command line set the path to the document root or where the code lies.
$ cd ~/public_html
$ php -S localhost:8000Read More : http://php.net/manual/en/features.commandline.webserver.php
2 Remove duplicate values from the array
$a = array_flip(array_flip($a));
<?php
$a = array('1','1','2','2','3','3');
printr(arrayflip(array_flip($a)));
/*
Result:
Array ( [1] => 1 [2] => 3 [3] => 5 )
*/
?>
</pre></code>
3 Variable variable names
A variable variable takes the value of a variable and treats that as the name of a variable.
<?php $a="php"; $$a="cool"; echo "$a is $php"; ?>
/*
Output : php is cool
*/
</pre></code>
Read More : http://php.net/manual/en/language.variables.variable.php
4 Swapping two variables
list($a, $b) = array($b, $a);Written by Ankesh
Related protips
5 Responses
Tip 2 can be replaced with http://be2.php.net/array_unique
A prefer to assign values within a string with sprintf, which allow me to replace the pattern easly :)
<?php $var = 'hello, ' . $world . '!';?>vs.
<?php $var = sprintf('hello, %s!', $world);?>
@tschuermans thanks for sharing.
2 Remove duplicate values from the array
ehm...
$array = array_unique($array);
3 Variable variable names
Seriously: Don't use it. Its a good way to introduce hard to find bugs and to annoy your coworkers.
2 is wrong. 3 is just terrible practice. This isn't really anything cool.
