Php/docs/internals2.opcodes.fetch-is
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FETCH_IS
PHP code
<?php/* * Fetch the value from variable which is to be used to test if it is set or not, through isset()/isempty(). * opcode number: 89 */echo isset($_SESSION['userid']);echo isset($_SESSION['userid'][1]);echo isset($_SESSION->prop->prop);?>
PHP opcodes
Function name: (null)
Compiled variables: none
| line | # | op | fetch | ext | return | operands |
|---|---|---|---|---|---|---|
| 6 | 0 | FETCH_IS | $0 | '_SESSION' | ||
| 1 | ZEND_ISSET_ISEMPTY_DIM_OBJ | 1 | ~1 | $0,'userid' | ||
| 2 | ECHO | ~1 | ||||
| 7 | 3 | FETCH_IS | $2 | '_SESSION' | ||
| 4 | FETCH_DIM_IS | $3 | $2,'userid' | |||
| 5 | ZEND_ISSET_ISEMPTY_DIM_OBJ | 1 | ~4 | $3,1 | ||
| 6 | ECHO | ~4 | ||||
| 8 | 7 | FETCH_IS | $5 | '_SESSION' | ||
| 8 | FETCH_OBJ_IS | $6 | $5,'prop' | |||
| 9 | ZEND_ISSET_ISEMPTY_PROP_OBJ | ~7 | $6,'prop' | |||
| 10 | ECHO | ~7 | ||||
| 9 | 11 | RETURN | 1 |
