#41395 [Bgs]: behaviour of substr_replace changed in php 5.2.2

ID: 41395 User updated by: daniel dot menard at bdsp dot tm dot fr Reported By: daniel dot menard at bdsp dot tm dot fr Status: Bogus Bug Type: Strings related Operating System: windows 2003 server PHP Version: 5.2.2 New Comment: I double-checked the manual : "If length is given and is positive, it represents the length of the portion of string which is to be replaced. If it is negative, it represents the number of characters from the end of string at which to stop replacing. If it is not given, then it will default to strlen( string ); i.e. end the replacing at the end of string. Of course, if length is zero then this function will have the effect of inserting replacement into string at the given start offset." I see nothing saying what happens if length is greater than the length of the string, neither I see anything stating that there were changes concerning this function in php 5.2.2... Previous Comments: ------------------------------------------------------------------------ [2007-05-16 12:58:17] tony2001@php.net 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 ------------------------------------------------------------------------ [2007-05-15 08:53:02] daniel dot menard at bdsp dot tm dot fr Description: ------------ The behaviour of substr_replace seems to have changed in php 5.2.2 when the length parameter is specified and is greater than the actual length of the string to modify. With php < 5.2.2, the string is extended, with php 5.2.2 substr_replace returns false. I don't know if this is an intended change or not, but this change is not documented in the function description. Just in case it matters: I'm using php 5.2.2 in cli mode with apache/2.2.4 on a windows 2003 server. Note: perhaps it is related to http://bugs.php.net/bug.php?id=40754 Thanks ! Reproduce code: --------------- <?php echo PHP_VERSION, ' : '; var_dump(substr_replace('012', 'ABCD', 0, 4)); ?> Expected result: ---------------- either the same result as in in previous php versions or a note in the documentation stating that the behaviour has changed. Actual result: -------------- with PHP 5.2.2, I get: 5.2.2 : bool(false) With older versions of php I get: 5.2.1 : string(4) "ABCD" 5.2.0 : string(4) "ABCD" 5.1.2 : string(4) "ABCD" 5.1.1 : string(4) "ABCD" ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=41395&edit=1