_php tips for functions that are disabled when PHP opens Safe mode

Copy Code code as follows:

<?php
Ini_set ("Safe_mode", true);
?>

Table 42-2. Safe Mode limit function

The

name of the function	Limit
Dbmopen ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed.
Dbase_open ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed.
Filepro ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed.
Filepro_rowcount ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed.
Filepro_retrieve ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed.
Ifx_*	Sql_safe_mode limit, (!= Safe mode)
Ingres_*	Sql_safe_mode limit, (!= Safe mode)
Mysql_*	Sql_safe_mode limit, (!= Safe mode)
Pg_loimport ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed.
Posix_mkfifo ()	Checks whether the directory being manipulated has the same UID (owner) as the script being executed.
Putenv ()	Follow the Safe_mode_protected_env_vars and Safe_mode_allowed_env_vars options set by the INI. Refer to the documentation for the putenv () function.
Move_uploaded_file ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed.
ChDir ()	Checks whether the directory being manipulated has the same UID (owner) as the script being executed.
DL ()	This function is disabled in Safe mode .
Backtick operator	This function is disabled in Safe mode .
shell_exec ()(same function as backticks function)	This function is disabled in Safe mode .
EXEC ()	You can perform operations only in the directory of the safe_mode_exec_dir settings. For some reason, it cannot be used in the path of an executable object at this time ... Escapeshellcmd () will be applied to the parameters of this function.
System ()	You can perform operations only in the directory of the safe_mode_exec_dir settings. For some reason, it cannot be used in the path of an executable object at this time ... Escapeshellcmd () will be applied to the parameters of this function.
PassThru ()	You can perform operations only in the directory of the safe_mode_exec_dir settings. For some reason, it cannot be used in the path of an executable object at this time ... Escapeshellcmd () will be applied to the parameters of this function.
Popen ()	You can perform operations only in the directory of the safe_mode_exec_dir settings. For some reason, it cannot be used in the path of an executable object at this time ... Escapeshellcmd () will be applied to the parameters of this function.
fopen ()	Checks whether the directory being manipulated has the same UID (owner) as the script being executed.
mkdir ()	Checks whether the directory being manipulated has the same UID (owner) as the script being executed.
RmDir ()	Checks whether the directory being manipulated has the same UID (owner) as the script being executed.
Rename ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed. Checks whether the directory being manipulated has the same UID (owner) as the script being executed.
Unlink ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed. Checks whether the directory being manipulated has the same UID (owner) as the script being executed.
Copy ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed. Checks whether the directory being manipulated has the same UID (owner) as the script being executed. (on source and target )
CHGRP ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed.
Chown ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed.
chmod ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed. Also, you cannot set SUID, SGID, and sticky bits
Touch ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed. Checks whether the directory being manipulated has the same UID (owner) as the script being executed.
Symlink ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed. Checks whether the directory being manipulated has the same UID (owner) as the script being executed. (Note: test target only)
Link ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed. Checks whether the directory being manipulated has the same UID (owner) as the script being executed. (Note: test target only)
Apache_request_headers ()	In safe mode, headers that begin with "authorization" (case-sensitive) will not be returned.
Header ()	In safe mode, if www-authenticateis set, the current script's UID will be added to the realm portion of the header.
Php_auth variable	In safe mode, variables PHP_AUTH_USER , PHP_AUTH_PW and in, PHP_AUTH_TYPE are $_SERVER not available. However, you can still use REMOTE_USER to get the user name. (Note: Only PHP 4.3.0 available later)
highlight_file (), Show_source ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed. Checks whether the directory being manipulated has the same UID (owner) as the script being executed. (Note that this is only valid after version 4.2.1)
Parse_ini_file ()	Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed. Checks whether the directory being manipulated has the same UID (owner) as the script being executed. (Note that this is only valid after version 4.2.1)
Set_time_limit ()	does not work in Safe Mode .
Max_execution_time	does not work in Safe Mode .
Mail ()	In Safe mode, the fifth parameter is masked. (Note that only from PHP 4.2.3 is affected)
Any function that uses php4/main/fopen_wrappers.c	??