Spacing Around Binary Operators
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Rule: All binary arithmetic, comparison, assignment, bitwise, logical, string, and type operators MUST be preceded and followed by at least one space.
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Reason: This ensures that operators are clearly separated from their operands, improving readability and consistency.
Example (Correct):
$a = $b + $c;
$result = $a == $b;
Example (Incorrect):
$a=$b+$c;
$result=$a==$b;
No Space Around Increment/Decrement Operators
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Rule: The increment (
++) and decrement (--) operators MUST NOT have any space between the operator and the operand. -
Reason: This is the standard syntax for increment and decrement operations and ensures that the operators are correctly applied to the operands.
Example (Correct):
$i++;
--$i;
Example (Incorrect):
$i ++;
$i --;
No Space Within Type Casting Operators
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Rule: Type casting operators (e.g.,
(int),(float), etc.) MUST NOT have any space within the parentheses. -
Reason: This is the correct syntax for type casting in PHP, and it keeps the code clean and consistent.
Example (Correct):
$intValue = (int) $input;
$floatValue = (float) $value;
Example (Incorrect):
$intValue = ( int ) $input;
$floatValue = ( float ) $value;
Spacing Around Conditional (Ternary) Operator
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Rule: The conditional (ternary) operator MUST be preceded and followed by at least one space around both the
?and:characters. -
Reason: This improves readability by ensuring that the ternary operator is clearly separated from the operands.
Example (Correct):
$result = ($a > $b) ? $a : $b;Example (Incorrect):
$result = ($a > $b)?$a:$b;Summary:
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Binary operators (arithmetic, comparison, assignment, bitwise, logical, string, type) MUST have spaces before and after them.
-
Increment/decrement operators (
++,--) MUST NOT have spaces between the operator and operand. -
Type casting operators MUST NOT have space within the parentheses.
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Conditional (ternary) operator MUST have spaces around both
?and:characters.