[ 'number' => '10111', 'base' => 2, 0 => '$a', 1 => 0,]
[ 'result' => [ 'int' => 3, ], 'php_version' => '7.1.33 Linux x86_64',]
[ 'number' => '101110000', 'base' => 2, 0 => '$a', 1 => 5,]
[ 'result' => [ 'int' => 7, ], 'php_version' => '7.1.33 Linux x86_64',]