src/Str.php
public function contains($needle, $caseSensitive = false, $absolute = false)
    {
        return $this->find($needle, $caseSensitive, $absolute);
    }
public function contains($needle, $caseSensitive = false, $absolute = false)
    {
        return $this->find($needle, $caseSensitive, $absolute);
    }
Alias for find.

@param array|string $needle
@param bool         $caseSensitive
@param bool         $absolute

@return bool