PHP 7.0.6 Released

The MongoRegex class

(PECL mongo >=0.8.1)


This extension that defines this class is deprecated. Instead, the MongoDB extension should be used. Alternatives to this class include:


This class can be used to create regular expressions. Typically, these expressions will be used to query the database and find matching strings. More unusually, they can be saved to the database and retrieved.

Regular expressions consist of four parts. First a / as starting delimiter, then the pattern, another / and finally a string containing flags.

Example #1 Regular expression pattern


MongoDB recognizes six regular expression flags:

  • i: Case insensitive

  • m: Multiline

  • x: Can contain comments

  • l: locale

  • s: dotall, "." matches everything, including newlines

  • u: match unicode

Class synopsis

MongoRegex {
/* Fields */
public string $regex ;
public string $flags ;
/* Methods */
public __construct ( string $regex )
public string __toString ( void )

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User Contributed Notes 3 notes

vinicius at codemakers dot com dot br
2 years ago
Use the "i" option to make searches with Case Insensitive
Find results beginning with $q

$search = "V";

// Case Sensitive

$where = array('name' => array('$regex' => new MongoRegex("/^$search/")));
$cursor = $collection->find($where);

//Case Insensitive

$where = array('name' => array('$regex' => new MongoRegex("/^$search/i")));
$cursor = $collection->find($where);
thusitha555 at gmail dot com
1 year ago
here is an example for case insensitive search.If there are two fields (user_name/company_name) in collection;
$searchQuery = array(
'$or' => array(
'user_name' => new MongoRegex("/^$search_string/i"),
'company_name' => new MongoRegex("/^$search_string/i"),

$cursor = $customers->find($searchQuery);
benyounes dot ousama at gmail dot com
5 years ago
First you must declare and define your regexObj
Here I am looking for all entry of my database wich is like "%Nicolas%" and the /i param is used for Insensitive Case
$regexObj = new MongoRegex("/^Nicolas/i");

// I attach the regexObj to my Where Condition
$where = array("ctname" => $regexObj);

// Execute the request
$resultset = $this->db->Infos->find($where);

// Parsing the results
while ($resultset->hasNext())
$clientObj = $resultset->getNext();
"Client Name: ".$clientObj["cname"]."</br>";
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