case-Phpdoc专题

CASE

PHP code

<?php
/*
 * Set result to true if value1 equals value2.  The value2 must be a constant value?
 * opcode number: 48
 */
$i=0;
switch ($i) {
   case 0:
         echo "i=0";
         break;
   case 1:
         echo "i=1";
         break;
   case 2:
         echo "i=2";
         break;
}
?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$i

line	#	op	return	operands
6	0	ASSIGN		!0,0
8	1	CASE	~1	!0,0
	2	JMPZ		~1,->6
9	3	ECHO		'i%3D0'
10	4	BRK		1
11	5	JMP		->8
	6	CASE	~1	!0,1
	7	JMPZ		~1,->11
12	8	ECHO		'i%3D1'
13	9	BRK		1
14	10	JMP		->13
	11	CASE	~1	!0,2
	12	JMPZ		~1,->16
15	13	ECHO		'i%3D2'
16	14	BRK		1
17	15	JMP		->16
18	16	RETURN		1