mysqlnd_ms_match_wild(3) [php man page]

MYSQLND_MS_MATCH_WILD(3)						 1						  MYSQLND_MS_MATCH_WILD(3)

mysqlnd_ms_match_wild - Finds whether a table name matches a wildcard pattern or not

SYNOPSIS

       bool mysqlnd_ms_match_wild (string  $table_name, string	$wildcard)

DESCRIPTION

	Finds whether a table name matches a wildcard pattern or not.

	This  function	is  not of much practical relevance with PECL mysqlnd_ms 1.1.0 because the plugin does not support MySQL replication table
       filtering yet.

PARAMETERS

	      o $table_name
		- The table name to check if it is matched by the wildcard.

	      o $wildcard
		- The wildcard pattern to check against the table name. The wildcard pattern supports the same placeholders as	MySQL  replication
		filters do.  MySQL replication filters can be configured by using the MySQL Server configuration options --replicate-wild-do-table
		and --replicate-wild-do-db. Please, consult the MySQL Reference Manual to learn more about this MySQL Server  feature.	 The  sup-
		ported placeholders are:

		     o % - zero or more literals

		     o _ - one literal

	       Placeholders can be escaped using .

RETURN VALUES

	Returns TRUE table_name is matched by wildcard. Otherwise, returns FALSE

EXAMPLES

       Example #1

	      mysqlnd_ms_match_wild(3) example

	      <?php
	      var_dump(mysqlnd_ms_match_wild("schema_name.table_name", "schema%"));
	      var_dump(mysqlnd_ms_match_wild("abc", "_"));
	      var_dump(mysqlnd_ms_match_wild("table1", "table_"));
	      var_dump(mysqlnd_ms_match_wild("asia_customers", "%customers"));
	      var_dump(mysqlnd_ms_match_wild("funny%table","funny\%table"));
	      var_dump(mysqlnd_ms_match_wild("funnytable", "funny%table"));
	      ?>

	      The above example will output:

	      bool(true)
	      bool(false)
	      bool(true)
	      bool(true)
	      bool(true)
	      bool(true)

PHP Documentation Group 												  MYSQLND_MS_MATCH_WILD(3)

EMPTY(3)								 1								  EMPTY(3)

empty - Determine whether a variable is empty

SYNOPSIS

       bool empty (mixed  $var)

DESCRIPTION

	Determine  whether a variable is considered to be empty. A variable is considered empty if it does not exist or if its value equals FALSE.
       empty(3) does not generate a warning if the variable does not exist.

PARAMETERS

	      o $var
		- Variable to be checked

	      Note

		      Prior to PHP 5.5, empty(3) only supports variables; anything else will result in a parse error. In other words, the  follow-
		     ing will not work: empty(trim($name)). Instead, use trim($name) == false.

	       No  warning  is generated if the variable does not exist. That means empty(3) is essentially the concise equivalent to !isset($var)
	      || $var == false.

RETURN VALUES

	Returns FALSE if $var exists and has a non-empty, non-zero value. Otherwise returns TRUE.

	The following things are considered to be empty:

	      o "" (an empty string)

	      o 0 (0 as an integer)

	      o 0.0 (0 as a float)

	      o "0" (0 as a string)

	      o NULL

	      o FALSE

	      o array() (an empty array)

	      o $var; (a variable declared, but without a value)

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.5.0	|						    |
       |	|						    |
       |	| empty(3) now supports  expressions,  rather  than |
       |	| only variables.				    |
       |	|						    |
       | 5.4.0	|						    |
       |	|						    |
       |	|  Checking  non-numeric offsets of strings returns |
       |	| TRUE. 					    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	       A simple empty(3) / isset(3) comparison.

	      <?php
	      $var = 0;

	      // Evaluates to true because $var is empty
	      if (empty($var)) {
		  echo '$var is either 0, empty, or not set at all';
	      }

	      // Evaluates as true because $var is set
	      if (isset($var)) {
		  echo '$var is set even though it is empty';
	      }
	      ?>

       Example #2

	      empty(3) on String Offsets

	       PHP 5.4 changes how empty(3) behaves when passed string offsets.

	      <?php
	      $expected_array_got_string = 'somestring';
	      var_dump(empty($expected_array_got_string['some_key']));
	      var_dump(empty($expected_array_got_string[0]));
	      var_dump(empty($expected_array_got_string['0']));
	      var_dump(empty($expected_array_got_string[0.5]));
	      var_dump(empty($expected_array_got_string['0.5']));
	      var_dump(empty($expected_array_got_string['0 Mostel']));
	      ?>

	      Output of the above example in PHP 5.3:

	      bool(false)
	      bool(false)
	      bool(false)
	      bool(false)
	      bool(false)
	      bool(false)

	      Output of the above example in PHP 5.4:

	      bool(true)
	      bool(false)
	      bool(false)
	      bool(false)
	      bool(true)
	      bool(true)

NOTES

       Note

	      Because this is a language construct and not a function, it cannot be called using variable functions.

       Note

	       When using empty(3) on inaccessible object properties, the __isset() overloading method will be called, if declared.

SEE ALSO

       isset(3), __isset(), unset(3), array_key_exists(3), count(3), strlen(3), The type comparison tables.

PHP Documentation Group 														  EMPTY(3)