PHP support for operators includes the following:
PHP supports the standard mathematical operators:
$a = 4; $b = 2; //Addition: $a + b = 6 //Subtraction: $a - $b = 2 //Multiplication: $a * $b = 8 //Division :$a / $b = 2 //Modulus (remainder of $a / $b): $a % $b = 0 //Increment: $a++ (would equal 5 since $a = 4)
The two main assignment operators in php are "=" and ".". The equals sign should be obvious; it assigns a value to a variable:
$a = 4; $b = $a; // $b = 4
PHP supports the standard comparison operators, as shown in Table 1-1:
OPERATOR | DESCRIPTION |
---|---|
$a == $b | test if two values are equal |
$a != $b | test if two values are not equal |
$a < $b | test if the first value is less than the second |
$a > $b | test if the first value is greater than the second |
$a <= $b | test if the first value is less than or equal to the second |
$a >= $b | test if the first value is greater than or equal to the second |
PHP also supports the standard increment and decrement operators:
$a = 5; $a++; // $a = 6 $b = 5; $b--; //$b = 4
The "." operator concatenates two values:
$sentence_a = "The quick brown "; $sentence_b = "fox jumped..."; $sentence_c = $a . $b; //$sentence_c = "The quick brown fox jumped...";
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