Syntax: ofType (type)
The ofType method returns only elements of the specified type. To instead receive an error if an element cannot be cast, use {@link cast}.
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public ofType ( string $type ) : |
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| $type | string | The type to filter the elements of the sequence on. Can be either class name or one of the predefined types: array, int (integer, long), callable (callable), float (real, double), null, string, object, numeric, scalar. |
| return | A sequence that contains elements from the input sequence of the specified type. | |
public function ofType($type)
{
switch ($type) {
case 'array':
return $this->where(function ($v) {
return is_array($v);
});
case 'int':
case 'integer':
case 'long':
return $this->where(function ($v) {
return is_int($v);
});
case 'callable':
case 'callback':
return $this->where(function ($v) {
return is_callable($v);
});
case 'float':
case 'real':
case 'double':
return $this->where(function ($v) {
return is_float($v);
});
case 'null':
return $this->where(function ($v) {
return is_null($v);
});
case 'numeric':
return $this->where(function ($v) {
return is_numeric($v);
});
case 'object':
return $this->where(function ($v) {
return is_object($v);
});
case 'scalar':
return $this->where(function ($v) {
return is_scalar($v);
});
case 'string':
return $this->where(function ($v) {
return is_string($v);
});
default:
return $this->where(function ($v) use($type) {
return is_object($v) && get_class($v) === $type;
});
}
}