Problems with composer

Hello to all, several days ago hinders to utilize Yii2, after, to have several projects elaborated with Yii1.1’s version, my problem is that now I am implementing a new project with the basic template, right now there was installed some extensions by composer and you came out all right, but now I am trying to install another extensions for this method and you exploit me in this error, I right now have tried with you vary and always it explodes here. As it the problem?, As can I solve it?

This is the error¨¨

Fatal error: Out of memory (allocated 1059061760) (tried to allocate 201326600 bytes) in phar://D:/xampp/htdocs/pc/composer.phar/src/Composer/DependencyResolver/RuleSet.php on line 84