cleaned up php note

en/mongodb.markdown

@@ -246,7 +246,7 @@ You'd likely expect to find all of your precious unicorns to be vaccinated. To g
 ### In This Chapter ###
 This chapter concluded our introduction to the basic CRUD operations available against a collection. We looked at `update` in detail and observed three interesting behaviors. First, unlike an SQL update, MongoDB's `update` replaces the actual document. Because of this the `$set` modifier is quite useful. Secondly, `update` supports an intuitive `upsert` which is particularly useful when paired with the `$inc` modifier. Finally, by default, `update` only updates the first found document.
 
-Do remember that we are looking at MongoDB from the point of view of its shell. The driver and library you use could alter these default behaviors or expose a different API. For example, the Ruby driver merges the last two parameters into a single hash: `{:upsert => false, :multi => false}`. Similar situation with the PHP driver, where update command accepts the third parameter as array: `array('upsert' => false, 'multiple' => false, '...')`. 
+Do remember that we are looking at MongoDB from the point of view of its shell. The driver and library you use could alter these default behaviors or expose a different API. For example, the Ruby driver merges the last two parameters into a single hash: `{:upsert => false, :multi => false}`. Similarly, the PHP driver, merges the last two parameters into an array array: `array('upsert' => false, 'multiple' => false)`. 
 
 \clearpage