Functions should be called with no spaces between the function
name, the opening parenthesis, and the first parameter; spaces
between commas and each parameter, and no space between the last
parameter, the closing parenthesis, and the semicolon. Here's an
example:
| $var = foo($bar, $baz, $quux); |
As displayed above, there should be one space on either side of an
equals sign used to assign the return value of a function to a
variable. In the case of a block of related assignments, more space
may be inserted to promote readability:
| $short = foo($bar);
$long_variable = foo($baz); |
