MongoDB: Update Operators
Don't do this:
demo->steps;
$r = $c->findOne( [ 'person' => 'derickr' ] );
*$r['steps_made']["20170202"] = $r['steps_made']["20170202"] + 7124;*
*$c->update( [ 'person' => 'derickr' ], $r );*
]]>
Do this instead:
demo->steps;
$c->update(
[ 'person' => 'derickr' ],
[ *'$inc'* => [ "steps_made.20170202" => 7124 ] ]
);]]>
Other operators:
$c->update(
[ 'person' => 'derickr' ],
[ *'$addToSet'* => [ 'tags' => 'openstreetmap '] ]
);
$c->update(
[ 'person' => 'derickr' ],
[ *'$push'* => [ 'tags' => [
'$each' => [ 'mongodb', 'xdebug' ],
'$slice' => -2
] ] ]
);