1--TEST-- 2SCCP 031: Echo optimizations 3--INI-- 4opcache.enable=1 5opcache.enable_cli=1 6opcache.optimization_level=-1 7opcache.opt_debug_level=0x20000 8opcache.preload= 9zend_test.observer.enabled=0 10--EXTENSIONS-- 11opcache 12--FILE-- 13<?php 14function foo() { 15 $k = 0; 16 $a = [null]; 17 echo isset($a[$k]); 18 echo "b"; 19 echo isset($a[$k+1]); 20 echo "c"; 21 echo $a[$k]; 22 echo $a; // Should not be optimized 23} 24?> 25--EXPECTF-- 26$_main: 27 ; (lines=1, args=0, vars=0, tmps=0) 28 ; (after optimizer) 29 ; %ssccp_031.php:1-13 300000 RETURN int(1) 31 32foo: 33 ; (lines=4, args=0, vars=0, tmps=0) 34 ; (after optimizer) 35 ; %s_031.php:2-11 360000 ECHO string("b") 370001 ECHO string("c") 380002 ECHO array(...) 390003 RETURN null 40