#48830 [Opn->Bgs]: eval() parser error/warning on \'

ID: 48830 Updated by: jani@php.net Reported By: s dot coletta at unidata dot it -Status: Open +Status: Bogus Bug Type: Scripting Engine problem Operating System: Windows/Ubuntu PHP Version: 5.2.10 New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php http://php.net/eval Previous Comments: ------------------------------------------------------------------------ [2009-07-07 10:38:53] s dot coletta at unidata dot it I'm sorry but if I write this code: $str = "define('A','C:\\Dir\\');"; eval($str); I expect to be evaluated properly because \\' has to be escaped to \' So you are saying that: \\' is escaped to \' by the PHP parser when assigned to the string $str then eval parses it again escaping \' a second time and causing the error. Now, if I need to eval a statement like that, and this is not considered a bug, how can I workaround this? ------------------------------------------------------------------------ [2009-07-07 09:43:25] sjoerd-php at linuxonly dot nl Thank you for your bug report. The issue you report is not a bug. Both strings in your example look like this: define('A','C:\Dir\'); Note that the last single quote is escaped by the backslash. Passing this to eval or putting this string in a PHP file will rightfully give a parse error, because there is no ending quote. ------------------------------------------------------------------------ [2009-07-07 09:23:25] s dot coletta at unidata dot it Description: ------------ Eval() makes a wrong parsing of a string ending with \\' or \' The "Reproduce code" will not fail if you remove the ending \\ or \ like: $str = "define('A','C:\\Dir');"; or $str = "define('A','C:\Dir');"; Reproduce code: --------------- $str = "define('A','C:\\Dir\\');"; eval($str); or $str = "define('A','C:\Dir\');"; eval($str); Expected result: ---------------- No warnings or errors. Just this statement executed: define('A','C:\Dir\'); Actual result: -------------- For both examples provided the result is the same: Warning: Unexpected character in input: ''' (ASCII=39) state=1 in /test.php(3) : eval()'d code on line 1 Parse error: syntax error, unexpected ':' in /test.php(3) : eval()'d code on line 1 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=48830&edit=1