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Altering operator precedence with parentheses

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The order in which operators are evaluated is determined by the operator precedence (see also the Remarks section).

In 

$a = 2 * 3 + 4;

$a gets a value of 10 because 2 * 3 is evaluated first (multiplication has a higher precedence than addition) yielding a sub-result of 6 + 4, which equals to 10.

The precedence can be altered using parentheses: in 

$a = 2 * (3 + 4);

$a gets a value of 14 because (3 + 4) is evaluated first.

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* Operators
* Null Coalescing Operator
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* Execution Operator
* Incrementing and Decrementing Operators --
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* Altering operator precedence with parentheses
* Association
* Basic Assignment
* Comparison Operators
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