View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0001609 | Xdebug | Remote Debugging | public | 2019-01-15 17:21 | 2019-01-17 11:58 |
| Reporter | ebreisman | Assigned To | derick | ||
| Priority | high | Severity | feature | Reproducibility | always |
| Status | resolved | Resolution | no change required | ||
| Platform | Apple | OS | MacOs | OS Version | 10.13.6 |
| Product Version | 2.7.0beta1 | ||||
| Target Version | Fixed in Version | ||||
| Summary | 0001609: Unable to view local variables when debugging in Phpstorm using xdebug | ||||
| Description | A simple local variable assignment such as $a = 1 does not display the value of $a in the debug view. However, if $a is assigned from a call to a method such as $a = $this->myMethod(), then the value is displayed. | ||||
| Tags | No tags attached. | ||||
| Operating System | |||||
| PHP Version | 7.3.0 | ||||
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Do you have OPcache turned on? If so, it might just have optimised it out. Can you provide a short reproducible script, and a remote log (as is described at https://xdebug.org/support.php#remote) to go with it please? |
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xdebug.log (114,445 bytes) |
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Short script. Both variables $a and $b did not show while stepping through the code. I still have to check whether OPcache is turned on: public function test() { $a = 1; $b = $a + 1; return $b; } |
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Just checked: OPcache is turned on. |
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This is not a bug, but a feature in OPcache, which disables and optimises PHP code. With OPcache enabled, the following PHP opcodes are created:
compiled vars: none
line #* E I O op fetch ext return operands
-------------------------------------------------------------------------------------
2 0 E > EXT_NOP
4 1 EXT_STMT
5 2 EXT_STMT
6 3 EXT_STMT
4 > RETURN 2
As you can see, it only really does a "return 2;", and has no variables. The EXT_STMT opcodes are the ones that Xdebug can break on. With OPcache disabled, the ADD and ASSIGN statements, as well as the $a and $b variables are still there:
compiled vars: !0 = $a, !1 = $b
line #* E I O op fetch ext return operands
-------------------------------------------------------------------------------------
2 0 E > EXT_NOP
4 1 EXT_STMT
2 ASSIGN !0, 1
5 3 EXT_STMT
4 ADD 0000003:0000003 !0, 1
5 ASSIGN !1, 0000003:0000003
6 6 EXT_STMT
7 > RETURN !1
7 8* EXT_STMT
9* > RETURN null
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| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2019-01-15 17:21 | ebreisman | New Issue | |
| 2019-01-16 14:52 | derick | Note Added: 0004806 | |
| 2019-01-16 14:52 | derick | Assigned To | => derick |
| 2019-01-16 14:52 | derick | Status | new => feedback |
| 2019-01-16 20:08 | ebreisman | File Added: xdebug.log | |
| 2019-01-16 20:09 | ebreisman | Note Added: 0004810 | |
| 2019-01-16 20:09 | ebreisman | Status | feedback => assigned |
| 2019-01-16 20:21 | ebreisman | Note Added: 0004811 | |
| 2019-01-17 11:58 | derick | Note Added: 0004816 | |
| 2019-01-17 11:58 | derick | Status | assigned => resolved |
| 2019-01-17 11:58 | derick | Resolution | open => no change required |
