How to do a wildcard search with mongodb and php?

@addison 

To perform a wildcard search in MongoDB with PHP, you can use the regular expression (regex) operator in the query. Here's an example of how to do it:

1. Connect to MongoDB:

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$mongoClient = new MongoDBClient("mongodb://localhost:27017");
$database = $mongoClient->mydatabase;
$collection = $database->mycollection;

1. Perform a wildcard search:

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$searchTerm = 'keyword';
$filter = ['fieldname' => new MongoDBBSONRegex($searchTerm, 'i')];
$results = $collection->find($filter);

• $searchTerm is the wildcard search term you want to match.
• fieldname is the name of the field you want to perform the wildcard search on.
• 'i' indicates a case-insensitive search. Remove it if you want the search to be case-sensitive.

1. Iterate over the search results:

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foreach ($results as $row) {
    // do something with each matched document
}

In this example, the regex operator is used to create a regular expression pattern that matches the provided $searchTerm. The 'i' option makes the search case-insensitive. This pattern is then passed as the value of the field fieldname in the filter used for the $collection->find() method.

Note: Performing a wildcard search using regular expressions can be resource-intensive. Make sure to use indexes on the field you are performing the wildcard search on, to improve the search performance.