PHP 4.0 Bug #5251: Improper interpretation of braces ({}) in quoted strings

From: pdoyle@cncx.com Operating system: Solaris 2.5.1 PHP version: 4.0 Release Candidate 2 PHP Bug Type: Scripting Engine problem Bug description: Improper interpretation of braces ({}) in quoted strings When the scripting engine encounters a left brace ({) followed by a variable name, it assumes the brace is associated with the variable, and absorbs it and any matching right brace into the variable. That is, <?php echo "{$Hello}"; ?> will produce "" as output, not "{}". Also, <?php echo "{$Hello there}"; ?> will produce an error: Parse error: parse error, expecting `'}'' in /ch/admin.rt/www.admin-dev/html/home/test/test3.cgi on line 2 rather than the expected "{ there}". I presume this has to do with the improved variable referencing in quoted strings. I noticed this in the context of the IMAP extension, which actually uses curly braces in its function arguments (see imap_open as an example).