c9s
http://go-talks.appspot.com/github.com/davecheney/presentations/reproducible-builds.slide#11
``` php new ArrayAccessExpr('$var', [ 'foo', 'bar' ]); ``` generates: ``` php $var['foo']['bar']; ``` The access keys can be Expression objects: ``` php new ArrayAccessExpr('$var', [ 'foo', $someOtherExpr, $mathExpr ]);...
``` php $expr = new SafeArrayAccessExpr('$var', [ 'foo', 'bar' ]); ``` generates: ``` php isset($var['foo']['bar']) : $var['foo']['bar'] : null; ```
