- = Assignment $a=5
- == Equality if ($a == 5)
- === Identical if ($a === $b Same value and of the same type.
- != or <> Not Equal if ($a != $b)
- !== Not Identical $a !== $b
- < Less Than if ($a < $b)
- > Greater Than if ($a > $b)
- <= Less than or equal to
- >= Greater than or equal to
- ++ Increment $a++ ++$a
- -- Decrement $a-- --$a
- -= Combined operator-assignment -= $a-=5
- Ternary conditional operator: $first ? $second : $third
- If the value of the first subexpression is TRUE (non-zero), then the second subexpression is evaluated, and that is the result of the conditional expression. Otherwise, the third subexpression is evaluated, and that is the value.
- Example:
$string=$first ? $second : $third
The above can be expressed like the following:
if ( $first ) {
$string = $second ;
} else {
$string = $third ;
}
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- + Addition $a + $b
- - Subtraciotn - $a - $b
- * Multiplication * $a * $b
- / Division / $a / $b
- % Modulus $a % $b
- & And $a & $b
- | Or $a | $b
- ^ Xor $a ^ $b
- ~ Not ~ $a
- << Shift left $a<<$b Shift the bits of $a $b steps to the left (each step means "multiply by two")
- >> Shift right $a<<$b Shift the bits of $a $b steps to the right (each step means "divide by two")
- @ Error Control Operator - Ignore error messages from an expression
- `` Execution Operators - Execute the given command
- . Concatination operator for strings
- .= Concatenating assignment operator
$a = "Hello ";
$b = $a . "World!"; // now $b contains "Hello World!"
$a = "Hello ";
$a .= "World!"; // now $a contains "Hello World!"
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