Bug #63539 [Opn->Wfx]: ob_start output_callback can not access global objects

Edit report at https://bugs.php.net/bug.php?id=63539&edit=1 ID: 63539 Updated by: laruence@php.net Reported by: cumhuronat at gmail dot com Summary: ob_start output_callback can not access global objects -Status: Open +Status: Wont fix Type: Bug Package: Output Control Operating System: Centos PHP Version: 5.3.18 Block user comment: N Private report: N New Comment: output buffer callback will be called in php request shutdown phase. and exactly after calling possible destructors of objects. because there might be some output in object's destructor. that means, while in output buffer callback, the global object anotherClass has been destroyed. you can use following codes: <?php class AnotherClass{ public $world = "world"; } $anotherClass = new AnotherClass(); class TestClass{ function __construct(){ global $anotherClass; ob_start(function($input) use($anotherClass) { return $input.$anotherClass->world; });; } } $tClass = new TestClass(); echo "hello"; which will inc the refcount of $anotherClass , and prevent it be destroyed before output buffer callback be called Previous Comments: ------------------------------------------------------------------------ [2012-11-16 12:18:30] cumhuronat at gmail dot com Description: ------------ I'm currently using output buffering for some sort of header & footer automatization. But I need to access global variables inside the output_callback function. If I don't use class oriented code there isn't any issue. Test script: --------------- class AnotherClass{ public $world = "world"; } $anotherClass = new AnotherClass(); class TestClass{ function __construct(){ ob_start(array($this,"callback")); } function callback($input){ global $anotherClass; return $input.$anotherClass->world; } } $tClass = new TestClass(); echo "hello"; Expected result: ---------------- helloworld Actual result: -------------- hello ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=63539&edit=1