#39814 [Opn->Fbk]: is_numeric() timeout/infinite loop on long numeric strings

ID: 39814 Updated by: tony2001@php.net Reported By: tim at digicol dot de -Status: Open +Status: Feedback Bug Type: Variables related Operating System: Linux 2.4 (SuSE SLES 8.1) PHP Version: 5.2.0 New Comment: Please try using this CVS snapshot: http://snaps.php.net/php5.2-latest.tar.gz For Windows: http://snaps.php.net/win32/php5.2-win32-latest.zip Previous Comments: ------------------------------------------------------------------------ [2006-12-13 12:00:08] tim at digicol dot de Description: ------------ Hi, the example code is taking forever (i.e., not terminating at all) on one of our Linux boxes: uname -a Linux dc5test 2.4.21-241-smp #1 SMP Tue Aug 10 15:55:34 UTC 2004 i686 unknown cat /etc/SuSE-release SuSE SLES-8 (i386) VERSION = 8.1 php -i | grep configure ./configure --with-libxml-dir=/services/usr/bin --prefix=/services/webserver/php/php-5.2.0 --with-db4=/services/database/db4/active --with-sqlite --enable-dba --with-apxs2=/services/webserver/apache/active/bin/apxs --with-bz2 --with-dom --with-gd --with-iconv --enable-sockets --with-zlib --disable-debug --enable-inline-optimization --enable-memory-limit --enable-magic-quotes --enable-safe-mode --enable-sigchild --enable-pcntl --with-oci8=/opt/oracle/product/9.2.0 --disable-ctype --without-mysql --enable-cli --with-pear --enable-exif --enable-ftp --enable-mbstring --with-libxml-dir=/services/usr Changes compared to php.ini-recommended: short_open_tag = On memory_limit = 82M error_log = /dot/dc/logs/php4_error.log post_max_size = 64M date.timezone = Europe/Berlin browscap = /dot/dc/system/install/init/browscap.ini session.save_path = "/tmp" session.gc_divisor = 100 session.gc_maxlifetime = 43200 url_rewriter.tags = "" mbstring.internal_encoding = UTF-8 The funny thing is that the same code runs fine on our other servers (which run various 32bit and 64bit SuSE versions, but Linux 2.6 instead of 2.4). I can work around this problem (and I don't really care whether is_numeric() returns true or false in this case), but I thought you might be interested anyway. Thanks for your attention, Tim Reproduce code: --------------- php -r 'echo is_numeric("16743175142160148228252851852361751021052084") . "\n";' Expected result: ---------------- 1 Actual result: -------------- [no result, script runs forever] ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=39814&edit=1