Xdebug document (1) basic features, xdebug document features_PHP tutorial

Xdebug document (1) Basic features, xdebug document features

Basic attributes (parameters)

xdebug.default_enable

Type: boolean, default value: 1

This is the basic setting of xdebug. By default, error information is displayed during debugging trace. You can use the xdebug_disable() function to disable debugging displays in your code.

xdebug.force_display_errors

Type: int, Default value: 0, since Xdebug version 2.3

When this setting is set to 1, no matter what the PHP setting display_errors setting value is, an error occurs The information will be forced to be displayed at all times.

xdebug.force_error_reporting

Type: int, default value: 0, since Xdebug version 2.3

This is a mask value similar to error_reporting, which uses logical or relationships to organize mask values ​​to determine which errors should or should not be displayed. This setting can only be configured in php.ini and cannot be used with the ini_set() function.

xdebug.halt_level

Type: int, default value: 0, since Xdebug version 2.3

This setting value will be a mask value to determine which type of error to convert. Supports four levels of settings:

xdebug.halt_level=E_WARNING|E_NOTICE|E_USER_WARNING|E_USER_NOTICE<br /><br /><br />

xdebug.max_nesting_level Type: integer, default value: 256 (the default value for versions before 2.3 is 100) This setting allows the maximum level of nested functions to run before the script stops. ​ xdebug.scream Type: boolean, Default value: 0, starting from Xdebug version>= 2.1 If this value is set to 1, xdebug will display notifications, warnings and errors for statements marked with the @ symbol and will no longer hide them. ​ ​ Related functions: ​ string xdebug_call_file() Returns the name of the file currently executing this function. ​ string xdebug_call_function() Returns the function source name when the current function is called and executed. ​ int xdebug_call_line() Returns the current line number of execution. ​ Example:

Example:

<?<span>php
    </span><span>function</span> fix_string(<span>$a</span><span>)
    {
        </span><span>echo</span> "Called @ ".<span>
            xdebug_call_file()</span>.
            ":".<span>
            xdebug_call_line()</span>.
            " from ".<span>
            xdebug_call_function();
    }

    </span><span>$ret</span> = fix_string(<span>array</span>('Derick'<span>));
</span>?>

<span>//</span><span> Called @ /home/httpd/html/test/xdebug_caller.php:12 from {main}</span>

string xdebug_call_class() Returns the calling class name. ​ void xdebug_disable() Do not display error tracking information. ​ void xdebug_enable() Display error tracking information. ​ string Starting with version 2.1 This function returns all collected error information formatted in table form. The starting point for collecting error information is determined using the function xdebug_start_error_collection(). By default, this function will not clear the error information collection cache. You can set the parameter to true and the cache will be cleared. ​ array xdebug_get_headers() Returns all header information in an array. All header information set by calling the header() function will be returned. bool xdebug_is_enabled() Check whether the debug trace is valid. ​ int

<?<span>php
</span><span>header</span>( "X-Test", "Testing"<span> );
</span><span>setcookie</span>( "TestCookie", "test-value"<span> );
</span><span>var_dump</span><span>( xdebug_get_headers() );
</span>?>

<span>/*</span><span>*
Returns:

array(2) {
  [0]=>
  string(6) "X-Test"
  [1]=>
  string(33) "Set-Cookie: TestCookie=test-value"
}
</span><span>*/</span>

xdebug_memory_usage() Returns the memory usage of the script. Versions compiled before PHP5.2.1 must be accompanied by the --enable-memory-limit parameter to be effective, and versions after this are always valid. ​ int xdebug_peak_memory_usage() Returns the highest value of memory usage. Versions compiled before PHP5.2.1 must be accompanied by the --enable-memory-limit parameter to be effective, and versions after this are always valid. ​ void xdebug_start_error_collection() Since version 2.1 Once this function is executed, PHP will no longer display any notification warnings and error messages. These messages will be stored in a cache and will not stop until xdebug_stop_error_collection() is executed. The error information content in the cache can be obtained through the xdebug_get_collected_errors() function. ​ void xdebug_stop_error_collection() Starting with version 2.1 Contrary to xdebug_start_error_collection(), it stops collecting all notifications, warnings, and error messages. Note that it does not clear the cache of collection errors. ​ float xdebug_time_index() Returns the current time index, the number of seconds since the script started running, expressed as a float.

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