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[2003-06-04 14:02 UTC] andrei@php.net
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Last updated: Sat Oct 25 13:00:01 2025 UTC |
Here is sample script: <? class Node { function Node(){} } class B { var $id; function newNode() { static $nCount=0; $n=new Node(); aggregate($n,'B'); $n->id=++$nCount; return $n; } } function makeBNode() { $b=new B(); return $b->newNode(); } $bn1=makeBNode(); print_r( $bn1 ); $bn2=$bn1->newNode(); print_r( $bn2 ); unset($bn2); // Comment/uncomment this line to get interesting result $bn3=$bn1->newNode(); print_r($bn3); print_r($bn3->newNode()); ?> produce following result: [root@RAMM garb]# /usr/local/php_ss/bin/php aggregate.php node Object ( [id] => 1 ) node Object ( [id] => 2 ) node Object ( [id] => 3 ) node Object ( [id] => 4 ) Segmentation fault (core dumped) Here is information from gdb: (gdb) where #0 0x4013fc90 in chunk_free (ar_ptr=0x401f3620, p=0x81dac50) at malloc.c:3231 #1 0x4013fbf4 in __libc_free (mem=0x81db430) at malloc.c:3154 #2 0x081171ac in shutdown_memory_manager (silent=0, clean_cache=0, tsrm_ls=0x817d0c0) at /home/mike/Software/php4-STABLE-200305101330/Zend/zend_alloc.c:492 #3 0x080faa3e in php_request_shutdown (dummy=0x0) at /home/mike/Software/php4-STABLE-200305101330/main/main.c:996 #4 0x08144680 in main (argc=2, argv=0xbffffa64) at /home/mike/Software/php4-STABLE-200305101330/sapi/cli/php_cli.c:843 #5 0x400db507 in __libc_start_main (main=0x8143884 <main>, argc=2, ubp_av=0xbffffa64, init=0x80614b4 <_init>, fini=0x8144b00 <_fini>, rtld_fini=0x4000dc14 <_dl_fini>, stack_end=0xbffffa5c) at ../sysdeps/generic/libc-start.c:129 One more issue. If comment line #34: unset($bn2); We got following unexpected result: [root@RAMM garb]# /usr/local/php_ss/bin/php aggregate.php node Object ( [id] => 1 ) node Object ( [id] => 2 ) node Object ( [id] => 3 ) Fatal error: Call to undefined function: newnode() in /var/www/html/Kiss/garb/aggregate.php on line 38 Segmentation fault (core dumped) Auxiliary information about system: [root@RAMM garb]# /usr/local/php_ss/bin/php -r 'phpinfo();' phpinfo() PHP Version => 4.3.2-RC3-dev System => Linux RAMM 2.4.20 #2 Sat Feb 1 17:42:27 MSK 2003 i686 Build Date => May 10 2003 19:00:42 Configure Command => './configure' '--prefix=/usr/local/php_ss' '--with-apxs2=/usr/local/apache2/bin/apxs' '--with-config-file-path=/etc' Server API => Command Line Interface Virtual Directory Support => enabled Configuration File (php.ini) Path => /etc PHP API => 20020918 PHP Extension => 20020429 Zend Extension => 20021010 Debug Build => no Thread Safety => enabled Registered PHP Streams => php, http, ftp This program makes use of the Zend Scripting Language Engine: Zend Engine v1.3.0, Copyright (c) 1998-2003 Zend Technologies _______________________________________________________________________ Configuration PHP Core Directive => Local Value => Master Value allow_call_time_pass_reference => On => On allow_url_fopen => On => On always_populate_raw_post_data => Off => Off arg_separator.input => & => & arg_separator.output => & => & asp_tags => Off => Off auto_append_file => no value => no value auto_prepend_file => no value => no value browscap => no value => no value default_charset => no value => no value default_mimetype => text/html => text/html define_syslog_variables => Off => Off disable_classes => no value => no value disable_functions => no value => no value display_errors => On => On display_startup_errors => Off => Off doc_root => no value => no value docref_ext => no value => no value docref_root => no value => no value enable_dl => On => On error_append_string => no value => no value error_log => no value => no value error_prepend_string => no value => no value error_reporting => no value => no value expose_php => On => On extension_dir => /usr/local/php_ss/lib/php/extensions/no-debug-zts-20020429 => /usr/local/php_ss/lib/php/extensions/no-debug-zts-20020429 file_uploads => On => On gpc_order => GPC => GPC highlight.bg => #FFFFFF => #FFFFFF highlight.comment => #FF8000 => #FF8000 highlight.default => #0000BB => #0000BB highlight.html => #000000 => #000000 highlight.keyword => #007700 => #007700 highlight.string => #DD0000 => #DD0000 html_errors => Off => On ignore_repeated_errors => Off => Off ignore_repeated_source => Off => Off ignore_user_abort => Off => Off implicit_flush => On => Off include_path => .:/usr/local/php_ss/lib/php => .:/usr/local/php_ss/lib/php log_errors => Off => Off log_errors_max_len => 1024 => 1024 magic_quotes_gpc => On => On magic_quotes_runtime => Off => Off magic_quotes_sybase => Off => Off max_execution_time => 0 => 30 max_input_time => -1 => -1 open_basedir => no value => no value output_buffering => 0 => 0 output_handler => no value => no value post_max_size => 8M => 8M precision => 14 => 14 register_argc_argv => On => On register_globals => Off => Off report_memleaks => On => On safe_mode => Off => Off safe_mode_exec_dir => /usr/local/php/bin => /usr/local/php/bin safe_mode_gid => Off => Off safe_mode_include_dir => no value => no value sendmail_from => no value => no value sendmail_path => /usr/sbin/sendmail -t -i => /usr/sbin/sendmail -t -i serialize_precision => 100 => 100 short_open_tag => On => On SMTP => localhost => localhost smtp_port => 25 => 25 sql.safe_mode => Off => Off track_errors => Off => Off unserialize_callback_func => no value => no value upload_max_filesize => 2M => 2M upload_tmp_dir => no value => no value user_dir => no value => no value variables_order => no value => no value xmlrpc_error_number => 0 => 0 xmlrpc_errors => Off => Off y2k_compliance => On => On ctype ctype functions => enabled mysql MySQL Support => enabled Active Persistent Links => 0 Active Links => 0 Client API version => 3.23.49 MYSQL_MODULE_TYPE => builtin MYSQL_SOCKET => /var/lib/mysql/mysql.sock MYSQL_INCLUDE => MYSQL_LIBS => Directive => Local Value => Master Value mysql.allow_persistent => On => On mysql.connect_timeout => -1 => -1 mysql.default_host => no value => no value mysql.default_password => no value => no value mysql.default_port => no value => no value mysql.default_socket => no value => no value mysql.default_user => no value => no value mysql.max_links => Unlimited => Unlimited mysql.max_persistent => Unlimited => Unlimited mysql.trace_mode => Off => Off overload User-Space Object Overloading Support => enabled pcre PCRE (Perl Compatible Regular Expressions) Support => enabled PCRE Library Version => 3.92 11-Sep-2002 posix Revision => $Revision: 1.51.2.2 $ session Session Support => enabled Registered save handlers => files user Directive => Local Value => Master Value session.auto_start => Off => Off session.bug_compat_42 => On => On session.bug_compat_warn => On => On session.cache_expire => 180 => 180 session.cache_limiter => nocache => nocache session.cookie_domain => no value => no value session.cookie_lifetime => 0 => 0 session.cookie_path => / => / session.cookie_secure => Off => Off session.entropy_file => no value => no value session.entropy_length => 0 => 0 session.gc_divisor => 100 => 100 session.gc_maxlifetime => 1440 => 1440 session.gc_probability => 1 => 1 session.name => PHPSESSID => PHPSESSID session.referer_check => no value => no value session.save_handler => files => files session.save_path => /tmp => /tmp session.serialize_handler => php => php session.use_cookies => On => On session.use_only_cookies => Off => Off session.use_trans_sid => Off => Off standard Regex Library => Bundled library enabled Dynamic Library Support => enabled Path to sendmail => /usr/sbin/sendmail -t -i Directive => Local Value => Master Value assert.active => 1 => 1 assert.bail => 0 => 0 assert.callback => no value => no value assert.quiet_eval => 0 => 0 assert.warning => 1 => 1 auto_detect_line_endings => 0 => 0 default_socket_timeout => 60 => 60 safe_mode_allowed_env_vars => PHP_ => PHP_ safe_mode_protected_env_vars => LD_LIBRARY_PATH => LD_LIBRARY_PATH url_rewriter.tags => a=href,area=href,frame=src,form=,fieldset= => a=href,area=href,frame=src,form=,fieldset= user_agent => no value => no value tokenizer Tokenizer Support => enabled xml XML Support => active XML Namespace Support => active EXPAT Version => 1.95.2 Additional Modules Module Name Environment Variable => Value PWD => /var/www/html HOSTNAME => RAMM QTDIR => /usr/lib/qt-2.3.1 LESSOPEN => |/usr/bin/lesspipe.sh %s KDEDIR => /usr USER => root LS_COLORS => no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:ex=01;32:*.cmd=01;32:*.exe=01;32:*.com=01;32:*.btm=01;32:*.bat=01;32:*.sh=01;32:*.csh=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.gz=01;31:*.bz2=01;31:*.bz=01;31:*.tz=01;31:*.rpm=01;31:*.cpio=01;31:*.jpg=01;35:*.gif=01;35:*.bmp=01;35:*.xbm=01;35:*.xpm=01;35:*.png=01;35:*.tif=01;35: HISTCONTROL => ignorespace MACHTYPE => i386-redhat-linux-gnu MAIL => /var/spool/mail/root INPUTRC => /etc/inputrc OLDPWD => /home/mike/Software/php4-STABLE-200305101330 BASH_ENV => /root/.bashrc LANG => en_US LOGNAME => root SHLVL => 2 SHELL => /bin/bash USERNAME => root MC_CONTROL_FILE => /tmp/mc.1173.control HOSTTYPE => i386 OSTYPE => linux-gnu HISTSIZE => 1000 HOME => /root TERM => xterm SSH_ASKPASS => /usr/libexec/openssh/gnome-ssh-askpass PATH => /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin SSH_TTY => /dev/pts/0 _ => /usr/local/php_ss/bin/php PHP Variables Variable => Value _SERVER["PWD"] => /var/www/html/ _SERVER["HOSTNAME"] => RAMM _SERVER["QTDIR"] => /usr/lib/qt-2.3.1 _SERVER["LESSOPEN"] => |/usr/bin/lesspipe.sh %s _SERVER["KDEDIR"] => /usr _SERVER["USER"] => root _SERVER["LS_COLORS"] => no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:ex=01;32:*.cmd=01;32:*.exe=01;32:*.com=01;32:*.btm=01;32:*.bat=01;32:*.sh=01;32:*.csh=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.gz=01;31:*.bz2=01;31:*.bz=01;31:*.tz=01;31:*.rpm=01;31:*.cpio=01;31:*.jpg=01;35:*.gif=01;35:*.bmp=01;35:*.xbm=01;35:*.xpm=01;35:*.png=01;35:*.tif=01;35: _SERVER["HISTCONTROL"] => ignorespace _SERVER["MACHTYPE"] => i386-redhat-linux-gnu _SERVER["MAIL"] => /var/spool/mail/root _SERVER["INPUTRC"] => /etc/inputrc _SERVER["OLDPWD"] => /home/mike/Software/php4-STABLE-200305101330 _SERVER["BASH_ENV"] => /root/.bashrc _SERVER["LANG"] => en_US _SERVER["LOGNAME"] => root _SERVER["SHLVL"] => 2 _SERVER["SHELL"] => /bin/bash _SERVER["USERNAME"] => root _SERVER["MC_CONTROL_FILE"] => /tmp/mc.1173.control _SERVER["HOSTTYPE"] => i386 _SERVER["OSTYPE"] => linux-gnu _SERVER["HISTSIZE"] => 1000 _SERVER["HOME"] => /root _SERVER["TERM"] => xterm _SERVER["SSH_ASKPASS"] => /usr/libexec/openssh/gnome-ssh-askpass _SERVER["PATH"] => /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin _SERVER["SSH_TTY"] => /dev/pts/0 _SERVER["_"] => /usr/local/php_ss/bin/php _SERVER["PHP_SELF"] => - _SERVER["SCRIPT_NAME"] => - _SERVER["SCRIPT_FILENAME"] => _SERVER["PATH_TRANSLATED"] => _SERVER["DOCUMENT_ROOT"] => _SERVER["argv"] => Array ( [0] => - ) _SERVER["argc"] => 1 _ENV["PWD"] => /var/www/html/ _ENV["HOSTNAME"] => RAMM _ENV["QTDIR"] => /usr/lib/qt-2.3.1 _ENV["LESSOPEN"] => |/usr/bin/lesspipe.sh %s _ENV["KDEDIR"] => /usr _ENV["USER"] => root _ENV["LS_COLORS"] => no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:ex=01;32:*.cmd=01;32:*.exe=01;32:*.com=01;32:*.btm=01;32:*.bat=01;32:*.sh=01;32:*.csh=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.gz=01;31:*.bz2=01;31:*.bz=01;31:*.tz=01;31:*.rpm=01;31:*.cpio=01;31:*.jpg=01;35:*.gif=01;35:*.bmp=01;35:*.xbm=01;35:*.xpm=01;35:*.png=01;35:*.tif=01;35: _ENV["HISTCONTROL"] => ignorespace _ENV["MACHTYPE"] => i386-redhat-linux-gnu _ENV["MAIL"] => /var/spool/mail/root _ENV["INPUTRC"] => /etc/inputrc _ENV["OLDPWD"] => /home/mike/Software/php4-STABLE-200305101330 _ENV["BASH_ENV"] => /root/.bashrc _ENV["LANG"] => en_US _ENV["LOGNAME"] => root _ENV["SHLVL"] => 2 _ENV["SHELL"] => /bin/bash _ENV["USERNAME"] => root _ENV["MC_CONTROL_FILE"] => /tmp/mc.1173.control _ENV["HOSTTYPE"] => i386 _ENV["OSTYPE"] => linux-gnu _ENV["HISTSIZE"] => 1000 _ENV["HOME"] => /root _ENV["TERM"] => xterm _ENV["SSH_ASKPASS"] => /usr/libexec/openssh/gnome-ssh-askpass _ENV["PATH"] => /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin _ENV["SSH_TTY"] => /dev/pts/0 _ENV["_"] => /usr/local/php_ss/bin/php PHP License This program is free software; you can redistribute it and/or modify it under the terms of the PHP License as published by the PHP Group and included in the distribution in the file: LICENSE This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. If you did not receive a copy of the PHP license, or have any questions about PHP licensing, please contact license@php.net.