文字
TokyoTyrantQuery::count
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TokyoTyrantQuery::count — Counts records
说明
public int TokyoTyrantQuery::count
( void
)
Returns a count of how many records a query returns.
参数
此函数没有参数。
返回值
Returns a count of matching rows and throws TokyoTyrantException on error
范例
Example #1 TokyoTyrantQuery::count() example
<?php
$tt = new TokyoTyrantTable ( "localhost" , 1979 );
$tt -> put ( null , array( "column1" => "some data" , "column2" => "something here" ));
$tt -> put ( null , array( "column1" => "more data" , "column2" => "best data this far" ));
$tt -> put ( null , array( "column1" => "again data" , "column3" => "not here" ));
$tt -> put ( null , array( "column45" => "random data" , "column2" => "something along the lines" ));
$tt -> put ( null , array( "column21" => "test data" , "column2" => "generating.." ));
$tt -> put ( null , array( "column1" => "foobar data" , "column2" => "value here" ));
$query = $tt -> getQuery ();
$query -> addCond ( "column2" , TokyoTyrant :: RDBQC_STROR , "something" );
var_dump ( $query -> count ());
?> 以上例程会输出：
int(2)
参见
- TokyoTyrantQuery::out() - Removes records based on query
- TokyoTyrantQuery::search() - Searches records
- TokyoTyrantQuery::metaSearch() - Retrieve records with multiple queries