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IDProjectCategoryView StatusLast Update
0001676XdebugUncategorizedpublic2019-08-26 12:37
Reportercyrus.and Assigned Toderick  
Status closedResolutionfixed 
OSLinuxOS VersionDebian GNU/Linux 
Target Version2.8.0devFixed in Version2.8.0beta2 
Summary0001676: xdebugtrace* deinit and write_footer not called for shutdown functions

Trace files footers are sometimes missing when PHP shutdown functions are being traced. It seems that the above callbacks are just fired once, while the *_init callback, for example, is called multiple times (one per registered shutdown function?).

Side question: is having multiple trace files in this case even the expected behavior?

Steps To Reproduce



function shutdown() {


Relevant php.ini bits:


If I request the page (once) I obtain:

root@b5d1f1f7af9d:/var/www/html# cat /tmp/trace.2373089536.xt
TRACE START [2019-06-12 18:34:53]
    0.0005     392080   -> {main}() /var/www/html/index.php:0
    0.0006     392080     -> register_shutdown_function() /var/www/html/index.php:7
    0.0006     392488     -> var_dump() /var/www/html/index.php:9

root@b5d1f1f7af9d:/var/www/html# cat /tmp/trace.2373089536.02ac99.xt
TRACE START [2019-06-12 18:34:53]
    0.0008     391712   -> shutdown() /var/www/html/index.php:0
    0.0009     391712     -> var_dump() /var/www/html/index.php:4
    0.0009     322544
TRACE END   [2019-06-12 18:34:53]

As you can see, TRACE END does not appear in the first trace file. Further investigation led me to understand that _deinit and _write_footer functions are simply not called in that case.

TagsNo tags attached.
Operating System
PHP Version7.3.2-7.3.4


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Issue History

Date Modified Username Field Change
2019-06-18 12:46 cyrus.and New Issue
2019-06-28 11:49 derick Target Version => 2.8.0dev
2019-07-26 14:31 derick Assigned To => derick
2019-07-26 14:31 derick Status new => closed
2019-07-26 14:31 derick Resolution open => fixed
2019-07-26 14:31 derick Fixed in Version => 2.8.0dev
2019-08-26 12:37 derick Fixed in Version 2.8.0dev => 2.8.0beta2
2020-03-12 16:35 derick Category Usage problems (Wrong Results) => Variable Display
2020-03-12 16:38 derick Category Variable Display => Uncategorized