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These include if, for, while, switch, etc.
Use of the "elseif" construct is permitted but highly discouraged in favor of the "else if" combination.
Here is an example if statement, since it is the most complicated of them:
<?php
if ((condition1) || (condition2)) {
action1;
} elseif ((condition3) && (condition4)) {
action2;
} else {
if (condition5) {
action3;
}
defaultaction;
}
?>
Control statements should have one space between the control
keyword and opening parenthesis, to distinguish them from function
calls.
The opening brace is written on the same line as the conditional
statement. The closing brace is always written on its own line. Any
content within the braces should be indented.
PHP allows for these statements to be written without braces in some
circumstances. However, all "if", "elseif" or "else" statements should
use braces.
You are strongly encouraged to always use curly braces even in
situations where they are technically optional. Having them increases
readability and decreases the likelihood of logic errors being
introduced when new lines are added.
For switch statements:
Control statements written with the "switch" construct should have a
single space before the opening parenthesis of the conditional
statement, and also a single space after the closing parenthesis.
All content within the "switch" statement should be indented. Content
under each "case" statement should contain an additional indent.
<?php
switch ($var) {
case 1:
break;
case 2:
break;
default:
break;
}
?>
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