MongoRegex - Matching the exact word

mongoregex_example.php

// Example: You have following documents with following content
// ['yourstring','yourstring1','1yourstring','23yourstring','your2string']
// You only want the first document with the content "yourstring"
// but you don´t want to care about large and lowercase when somebody tries to find the document.
// Here is the solution:

// Connection to MongoDB
$m = new MongoClient();

// Our search string
$search = "yourstring";
// You can write your search string in large or lower case or in a mixed format.

// Connect to your collection
$db = $m->database;
$collection = $db->myCollection;

// MongoRegex
// Use "i" to search with case insensitive
// The '$' means that you only want the exact word you want to have
$regex = new MongoRegex("/^".$search ."\$/i");

// Find the string
$query = $collection->find(array("strings" => $regex));

// Counting the results
echo $query->count();

// The output will be 1 because you only get "yourstring" as the final result.