foreach(BillInfo::where('id','>',0)->orderBy('id','desc')->limit(10000)->cursor()as$value) {
print_r($value);
}
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Illuminate\Database\Query\Builder.php;
/**
* Get a generator for the given query.
*
*@return\Generator
*/
public functioncursor()
{
if(is_null($this->columns)) {
$this->columns= ['*'];
}
return$this->connection->cursor(
$this->toSql(),$this->getBindings(), !$this->useWritePdo
);
}
Illuminate\Database\Connection.php;
/**
* Run a select statement against the database and returns a generator.
*
*@param string $query
*@param array $bindings
*@param bool $useReadPdo
*@return\Generator
*/
public functioncursor($query,$bindings= [],$useReadPdo=true)
{
$statement=$this->run($query,$bindings,function($query,$bindings)use($useReadPdo) {
if($this->pretending()) {
return[];
}
// First we will create a statement for the query. Then, we will set the fetch
// mode and prepare the bindings for the query. Once that's done we will be
// ready to execute the query against the database and return the cursor.
$statement=$this->prepared($this->getPdoForSelect($useReadPdo)
->prepare($query));
$this->bindValues(
$statement,$this->prepareBindings($bindings)
);
// Next, we'll execute the query against the database and return the statement
// so we can return the cursor. The cursor will use a PHP generator to give
// back one row at a time without using a bunch of memory to render them.
$statement->execute();
return$statement;
});
while($record=$statement->fetch()) {
yield$record;
}
}