Na działanie tych funkcji wpływają ustawienia zawarte w pliku php.ini.
| Nazwa | Domyślnie | Możliwość zmian | Rejestr zmian |
|---|---|---|---|
| error_reporting | NULL | PHP_INI_ALL | |
| display_errors | "1" | PHP_INI_ALL | |
| display_startup_errors | "0" | PHP_INI_ALL | |
| log_errors | "0" | PHP_INI_ALL | |
| log_errors_max_len | "1024" | PHP_INI_ALL | Available since PHP 4.3.0. |
| ignore_repeated_errors | "0" | PHP_INI_ALL | Available since PHP 4.3.0. |
| ignore_repeated_source | "0" | PHP_INI_ALL | Available since PHP 4.3.0. |
| report_memleaks | "1" | PHP_INI_ALL | Available since PHP 4.3.0. |
| track_errors | "0" | PHP_INI_ALL | |
| html_errors | "1" | PHP_INI_ALL | PHP_INI_SYSTEM in PHP <= 4.2.3. |
| xmlrpc_errors | "0" | PHP_INI_SYSTEM | Available since PHP 4.1.0. |
| xmlrpc_error_number | "0" | PHP_INI_ALL | Available since PHP 4.1.0. |
| docref_root | "" | PHP_INI_ALL | Available since PHP 4.3.0. |
| docref_ext | "" | PHP_INI_ALL | Available since PHP 4.3.2. |
| error_prepend_string | NULL | PHP_INI_ALL | |
| error_append_string | NULL | PHP_INI_ALL | |
| error_log | NULL | PHP_INI_ALL |
Oto krótkie wyjaśnienie dyrektyw konfiguracji.
error_reporting
integer
Set the error reporting level. The parameter is either an integer representing a bit field, or named constants. The error_reporting levels and constants are described in Predefined Constants, and in php.ini. To set at runtime, use the error_reporting() function. See also the display_errors directive.
In PHP 4 and PHP 5 the default value is E_ALL
& ~E_NOTICE.
This setting does not show E_NOTICE level errors. You
may want to show them during development.
Informacja:
Enabling
E_NOTICEduring development has some benefits. For debugging purposes: NOTICE messages will warn you about possible bugs in your code. For example, use of unassigned values is warned. It is extremely useful to find typos and to save time for debugging. NOTICE messages will warn you about bad style. For example, $arr[item] is better to be written as $arr['item'] since PHP tries to treat "item" as constant. If it is not a constant, PHP assumes it is a string index for the array.
Informacja:
In PHP 5 a new error level
E_STRICTis available. Prior to PHP 5.4.0E_STRICTwas not included withinE_ALL, so you would have to explicitly enable this kind of error level in PHP < 5.4.0. EnablingE_STRICTduring development has some benefits. STRICT messages provide suggestions that can help ensure the best interoperability and forward compatibility of your code. These messages may include things such as calling non-static methods statically, defining properties in a compatible class definition while defined in a used trait, and prior to PHP 5.3 some deprecated features would issueE_STRICTerrors such as assigning objects by reference upon instantiation.
Informacja: PHP Constants outside of PHP
Using PHP Constants outside of PHP, like in httpd.conf, will have no useful meaning so in such cases the integer values are required. And since error levels will be added over time, the maximum value (for
E_ALL) will likely change. So in place ofE_ALLconsider using a larger value to cover all bit fields from now and well into the future, a numeric value like 2147483647 (includes all errors, not justE_ALL).
display_errors
string
This determines whether errors should be printed to the screen as part of the output or if they should be hidden from the user.
Value "stderr" sends the errors to stderr instead of stdout. The value is available as of PHP 5.2.4. In earlier versions, this directive was of type boolean.
Informacja:
This is a feature to support your development and should never be used on production systems (e.g. systems connected to the internet).
Informacja:
Although display_errors may be set at runtime (with ini_set()), it won't have any affect if the script has fatal errors. This is because the desired runtime action does not get executed.
display_startup_errors
boolean
Even when display_errors is on, errors that occur during PHP's startup sequence are not displayed. It's strongly recommended to keep display_startup_errors off, except for debugging.
log_errors
boolean
Tells whether script error messages should be logged to the server's error log or error_log. This option is thus server-specific.
Informacja:
You're strongly advised to use error logging in place of error displaying on production web sites.
log_errors_max_len
integer
Set the maximum length of log_errors in bytes. In error_log information about the source is added. The default is 1024 and 0 allows to not apply any maximum length at all. This length is applied to logged errors, displayed errors and also to $php_errormsg.
Jeśli użyty zostanie typ integer, wartość zostanie liczona w bajtach. Można także użyć notacji skrótowej opisanej w FAQ.ignore_repeated_errors
boolean
Do not log repeated messages. Repeated errors must occur in the same file on the same line unless ignore_repeated_source is set true.
ignore_repeated_source
boolean
Ignore source of message when ignoring repeated messages. When this setting is On you will not log errors with repeated messages from different files or sourcelines.
report_memleaks
boolean
If this parameter is set to On (the default), this parameter will show a
report of memory leaks detected by the Zend memory manager. This report
will be send to stderr on Posix platforms. On Windows, it will be send
to the debugger using OutputDebugString(), and can be viewed with tools
like » DbgView.
This parameter only has effect in a debug build, and if
error_reporting includes E_WARNING in the allowed
list.
track_errors
boolean
If enabled, the last error message will always be present in the variable $php_errormsg.
html_errors
boolean
Turn off HTML tags in error messages. The new format for HTML errors produces clickable messages that direct the user to a page describing the error or function in causing the error. These references are affected by docref_root and docref_ext.
xmlrpc_errors
boolean
Turns off normal error reporting and formats errors as XML-RPC error message.
xmlrpc_error_number
integer
Used as the value of the XML-RPC faultCode element.
docref_root
string
The new error format contains a reference to a page describing the error or
function causing the error. In case of manual pages you can download the
manual in your language and set this ini directive to the URL of your local
copy. If your local copy of the manual can be reached by "/manual/"
you can simply use docref_root=/manual/. Additional you have
to set docref_ext to match the fileextensions of your copy
docref_ext=.html. It is possible to use external
references. For example you can use
docref_root=http://manual/en/ or
docref_root="http://landonize.it/?how=url&theme=classic&filter=Landon
&url=http%3A%2F%2Fwww.php.net%2F"
Most of the time you want the docref_root value to end with a slash "/". But see the second example above which does not have nor need it.
Informacja:
This is a feature to support your development since it makes it easy to lookup a function description. However it should never be used on production systems (e.g. systems connected to the internet).
docref_ext
string
See docref_root.
Informacja:
The value of docref_ext must begin with a dot ".".
error_prepend_string
string
String to output before an error message.
error_append_string
string
String to output after an error message.
error_log
string
Name of the file where script errors should be logged. The file should be writable by the web server's user. If the special value syslog is used, the errors are sent to the system logger instead. On Unix, this means syslog(3) and on Windows NT it means the event log. The system logger is not supported on Windows 95. See also: syslog(). If this directive is not set, errors are sent to the SAPI error logger. For example, it is an error log in Apache or stderr in CLI. See also error_log().