Memory Refresh
Php



Aritmetic





If the operator is placed after its operand, the interpreter will first return the value of the latter (unchanged), and then either increment or decrement it by one. Use with care. <?php $a = 1; echo $a++; // output 1 echo $a; // output 2 $a = 1; echo ++$a; // output 2 echo $a; // output 2 Incrementing or decrementing booleans has no effect <?php $a = TRUE; echo ++$a; // 1 echo $a; // 1 PHP follows Perl's convention when dealing with arithmetic operations on character variables. <?php $i = 'W'; for ($n=0; $n<6; $n++) { echo ++$i . "n"; } // output X Y Z AA AB AC