I am a cool php programmer :)

Some useful BASH shell hot keys and useful tips.

Check out these hot keys. They can help a lot to save your time.
Since I started using them, I'm just a new man :)

This one is so important, that I'll write it separately.

Ctrl+R	To search in previous commands. It displays the last occurrence.
Ctrl+R+R	It displays the occurrence before the last.

These commands are also very useful. When I say they are "useful", I really mean that I use them! :)

Ctrl+K	To delete the characters from the cursor to the end of the line.
ESC+D	To delete the characters from the cursor position to the end of the word
Ctrl+A	To move the cursor to the beginning of the command line
Ctrl+E	To move the cursor to the end of the command
Ctrl+L	To clear the screen, puts the current command line at the top of the screen

And I've got one additional tip for you. Use aliases!
Don't be lazy. It's so worth it!
To create your own alias, edit the file ~/.bashrc. Put there your alias.
Here is my alias that I use very frequently:

 alias pr='cd /var/www/myprojects' 

In this file you can see already added aliases. To check them out, you can also use alias command.

How to get list of available timezones in php

<?php
    print_r( DateTimeZone::listIdentifiers( ) ); 
?>

Some basic UNIX commands

Today I will write down some basic UNIX commands.
"cd -" will switch you to the previous directory.

testuser@test:~/Downloads$ cd ../Desktop/
testuser@test:~/Desktop$ cd -
/home/testuser/Downloads
testuser@test:~/Downloads$ 

"cd ~" or "cd" will switch you to your home directory.

testuser@test:~/Downloads$ cd ../Desktop/
testuser@test:~/Desktop$ cd -
/home/testuser/Downloads
testuser@test:~/Downloads$ 

"pwd" (print working directory) is used to output the path of the current working directory.

testuser@test:~/Desktop$ pwd
/home/testuser/Desktop

How to found out extra fields in Symfony2 form?

If you encounter this error message while working with Symfony2 forms, follow my advice.

This form should not contain extra fields.

This way to find out the fields that are considered "extra" is very simple. I use the code quite frequently. Here it is:

$data = $request->request->all();

print("REQUEST DATA<br/>");
foreach ($data as $k => $d) {
    print("$k: <pre>"); print_r($d); print("</pre>");
}

$children = $form->all();

print("<br/>FORM CHILDREN<br/>");
foreach ($children as $ch) {
    print($ch->getName() . "<br/>");
}

$data = array_diff_key($data, $children);
//$data contains now extra fields

print("<br/>DIFF DATA<br/>");
foreach ($data as $k => $d) {
    print("$k: <pre>"); print_r($d); print("</pre>");
}
...
$form->bind($data);

Have a nice day!