The MongoRegex class

(PECL mongo >=0.8.1)

Avertizare

Extensia care definește această clasă este învechită. În loc, trtebuie utilizată extensia MongoDB. Variante alternative pentru această clasă includ:

MongoDB\BSON\Regex

Introducere

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

/pattern/flags

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

Sinopsisul clasei

MongoRegex {

/* Fields */

public string $regex ;

public string $flags ;

/* Metode */

public __construct ( string $regex )

public __toString ( ) : string

}

Cuprins

MongoRegex::__construct — Creates a new regular expression
MongoRegex::__toString — A string representation of this regular expression

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User Contributed Notes 3 notes

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vinicius at codemakers dot com dot br ¶

10 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);

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thusitha555 at gmail dot com ¶

10 years ago


here is an example for case insensitive search.If there are two fields (user_name/company_name) in collection;
<?php
$search_string='baR';
$searchQuery = array(
            '$or' => array(
                array(
                    'user_name' => new MongoRegex("/^$search_string/i"),
                    ),
                array(
                    'company_name' => new MongoRegex("/^$search_string/i"),
                    ),
                )
            );

$cursor = $customers->find($searchQuery);
?>

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benyounes dot ousama at gmail dot com ¶

14 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");



<?php

// 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();

          echo "Client Name: ".$clientObj["cname"]."</br>";

 }

?>

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