将以下相应代码放到对应目录中的.htaccess文件，即可实现相应功能。
关闭错误显示 ：
php_flag display_startup_errors off
php_flag display_errors off
php_flag html_errors off
php_value docref_root 0
php_value docref_ext 0
只显示PHP错误 ：
php_flag display_errors on
php_flag display_startup_errors on
php_value error_reporting 2047
其中，“2047”为要显示的错误的级别，详细表格如下：
1 E_ERROR
2 E_WARNING
4 E_PARSE
8 E_NOTICE
16 E_CORE_ERROR
32 E_CORE_WARNING
64 E_COMPILE_ERROR
128 E_COMPILE_WARNING
256 E_USER_ERROR
512 E_USER_WARNING
1024 E_USER_NOTICE
2047 E_ALL
2048 E_STRICT
4096 E_RECOVERABLE_ERROR
要把错误保存到日志文件中 ，可以这样设置：
enable PHP error logging
php_flag log_errors on
php_value error_log /home/path/public_html/domain/PHP_errors.log
然后，可以设置不允许访问.log文件 ：
prevent access to PHP error log
Order allow,deny Deny from all Satisfy All
设置错误日志的最大体积 ，以bytes为单位：
general directive for
setting max error size
log_errors_max_len integer
综合上述，.htaccess的PHP错误显示设置汇总 ：
PHP error handling for production servers
disable display of startup errors
php_flag display_startup_errors off
disable display of all other errors
php_flag display_errors off
disable html markup of errors
php_flag html_errors off
enable logging of errors
php_flag log_errors on
disable ignoring of repeat errors
php_flag ignore_repeated_errors off
disable ignoring of unique source errors
php_flag ignore_repeated_source off
enable logging of php memory leaks
php_flag report_memleaks on
preserve most recent error via php_errormsg
php_flag track_errors on
disable formatting of error reference links
php_value docref_root 0
disable formatting of error reference links
php_value docref_ext 0
specify path to php error log
php_value error_log /home/path/public_html/domain/PHP_errors.log
specify recording of all php errors
php_value error_reporting 999999999
disable max error string length
php_value log_errors_max_len 0
protect error log by preventing public access
Order allow,deny Deny from all Satisfy All
以下则是适合开发者应用的设置：
PHP error handling for
development servers
php_flag display_startup_errors on
php_flag display_errors on
php_flag html_errors on
php_flag log_errors on
php_flag ignore_repeated_errors off
php_flag ignore_repeated_source off
php_flag report_memleaks on
php_flag track_errors on
php_value docref_root 0
php_value docref_ext 0
php_value error_log /home/path/public_html/domain/PHP_errors.log
php_value error_reporting 999999999
php_value log_errors_max_len 0
Order allow,deny Deny from all Satisfy All
总之，通过.htaccess设置显示PHP错误
