Common Guidelines

We Support (there could be exceptions)

Always Remember

Don't try to prematurely optimize your code; keep it readable and understandable.
All code in any code-base should look like a single person typed it, even when many people are contributing to it.
Strictly enforce the agreed-upon style.
Whatever you do, you should be able to explain the reason to other person.
If it makes sense, if it feels right, do it. Code is just a means, not an end.
If you have multiple code blocks doing some specific task, try to separate them with blank line and start each of them with a descriptive comment. It increases code readability. For example,
```
// Code block 1.
// Initialize variables.
$sum_even = 0;
$sum_odd = 0;

// Code block 2.
// Calculate sum of even numbers.
for ($i = 2; $i <= 50; $i += 2) {
  $sum_even += $i;
}

// Code block 3.
// Calculate sum of odd numbers.
for ($i = 1; $i <= 50; $i += 2) {
  $sum_odd += $i;
}

$result = $sum_even * $sum_odd;
```
Code blocks 1, 2 and 3 separated by blank spaces and with descriptive comments.

This is just an example, in real world scenarios code blocks can be longer and doing complex things.

Always use 2 spaces for indentation
Strings longer than 80 characters should be written across multiple lines using string concatenation.
Use braces with all multi-line blocks.
Place 1 space before the leading brace.
Set off operators with spaces.
No trailing white spaces.
Be descriptive with your naming for variables and functions.
Comment as much as you can.
Use /* ... */ for multi-line comments and // for single line comments.
Configure your editor according to these standards.
If you have long arrays, try to use multiline arrays.