ID: 49471 Updated by: j...@php.net Reported By: tudor at tudorholton dot com -Status: Open +Status: Bogus Bug Type: Scripting Engine problem Operating System: Ubuntu -PHP Version: 5.2SVN-2009-09-05 (snap) +PHP Version: 5.2.6 New Comment:
RTFM: http://www.php.net/types.string#language.types.string.parsing This works fine: echo "{$b->a->attr}"; Previous Comments: ------------------------------------------------------------------------ [2009-09-05 05:41:54] tudor at tudorholton dot com Description: ------------ This is actually on Ubuntu Jaunty which is PHP version 5.2.6-3ubuntu4.2 Using multiple object access operators in a row inside a double-quoted string causes the error: Catchable fatal error: Object of class ... could not be converted to string The problem is that the operators are interpreted from left to right and then converted to string. The last operation should be that the object is converted to a string. This is particularly important when using OO code because frequently the current object ($this) references another object and then gets an attribute from that. e.g. $this->that->attribute Reproduce code: --------------- <?php class A { var $attr = 'Hello A!'; } class B { var $a; var $attr = "Hello B!"; function __construct() { $this->a = new A(); } function output() { echo "$this->attr"; } } $b = new B(); $b->output(); echo "$b->attr"; echo "$b->a->attr"; ?> Expected result: ---------------- Hello B!Hello B!Hello A! Actual result: -------------- Hello B!Hello B! Catchable fatal error: Object of class A could not be converted to string in test.php on line 19 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=49471&edit=1
