TokyoTyrantQuery::valid
(PECL tokyo_tyrant >= 0.1.0)
TokyoTyrantQuery::valid — Checks the validity of current item
Description
public bool TokyoTyrantQuery::valid
( void
)
Checks if the current item is valid. Part of the Iterator interface
Parameters
This function has no parameters.
Return Values
Returns TRUE if the current item is valid and FALSE if not.
Examples
Example #1 TokyoTyrantQuery iterator example
<?php
/* Connect to a table database */
$tt = new TokyoTyrantTable("localhost", 1979);
/* Add rows */
$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" => "foobar 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"));
/* Get a new query object */
$query = $tt->getQuery();
/* Add a search condition */
$query->addCond("column2", TokyoTyrant::RDBQC_STROR, "something");
/* Iterate the results */
foreach ($query as $key => $value) {
echo "pk: $key, columns: ", count($value) ,"\n";
}
?>
The above example will output something similar to:
pk: 1, columns: 2 pk: 4, columns: 2
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- tokyo_tyrant
- Функция TokyoTyrantQuery::addCond() - Adds a condition to the query
- Функция TokyoTyrantQuery::__construct() - Construct a new query
- Функция TokyoTyrantQuery::count() - Counts records
- Функция TokyoTyrantQuery::current() - Returns the current element
- Функция TokyoTyrantQuery::hint() - Get the hint string of the query
- Функция TokyoTyrantQuery::key() - Returns the current key
- Функция TokyoTyrantQuery::metaSearch() - Retrieve records with multiple queries
- Функция TokyoTyrantQuery::next() - Moves the iterator to next entry
- Функция TokyoTyrantQuery::out() - Removes records based on query
- Функция TokyoTyrantQuery::rewind() - Rewinds the iterator
- Функция TokyoTyrantQuery::search() - Searches records
- Функция TokyoTyrantQuery::setLimit() - Limit results
- Функция TokyoTyrantQuery::setOrder() - Orders results
- Функция TokyoTyrantQuery::valid() - Checks the validity of current item
Коментарии
404 Not Found