Mongodbphp, mongodb_PHP tutorial

Mongodbphp and mongodb. Mongodbphp: mongodb first installs extensions before using mongodb 1. connect to the database try {$ mongonewMongoClient (); $ db $ mongo-mydb; var_dump ($ db );} catch (MongoCon mongodb php, mongodb

Install the extension before using mongodb

1. connect to the database

try {    $mongo = new MongoClient();    $db = $mongo->mydb;    var_dump($db);} catch (MongoConnectionException $e) {    echo $e->getMessage();}

This code can connect to the mydb Database. if the database does not exist, it is automatically created.

II. create a set

try {    $mongo = new MongoClient();    $db = $mongo->mydb;    $mycol = $db->createCollection('mycol');    var_dump($mycol);} catch (MongoConnectionException $e) {    echo $e->getMessage();}

This code creates a set of mycol.

3. Insert a document

Insert () is used in mongodb to insert a document.

try {    $mongo = new MongoClient();    $db = $mongo->mydb;    $mycol = $db->mycol;    $document = array('name' => 'test1' , 'sex' => 'formale' , 'age' => 20);    $res = $mycol->insert($document);    var_dump($res);} catch (MongoConnectionException $e) {    echo $e->getMessage();}

Output:

array (size=4)  'ok' => float 1  'n' => int 0  'err' => null  'errmsg' => null

4. search for documents

Mongodb uses find () to find documents

try {    $mongo = new MongoClient();    $db = $mongo->mydb;    $mycol = $db->mycol;    $mongoCursor = $mycol->find();    foreach ($mongoCursor as $document) {        var_dump($document);    }} catch (MongoConnectionException $e) {    echo $e->getMessage();}

Result:

array (size=4)  '_id' =>     object(MongoId)[7]      public '$id' => string '56c28a793b22cf5415000029' (length=24)  'name' => string 'test1' (length=5)  'sex' => string 'formale' (length=7)  'age' => int 20

5. update documents

Use update () to update documents

try {    $mongo = new MongoClient();    $db = $mongo->mydb;    $mycol = $db->mycol;    $mycol->update(array('name'=>'test1') , array('$set'=>array('age' => 21)));    $mongoCursor = $mycol->find();    foreach ($mongoCursor as $document) {        var_dump($document);    }} catch (MongoConnectionException $e) {    echo $e->getMessage();}

Result

array (size=4)  '_id' =>     object(MongoId)[7]      public '$id' => string '56c28a793b22cf5415000029' (length=24)  'name' => string 'test1' (length=5)  'sex' => string 'formale' (length=7)  'age' => int 21

6. delete documents

try {    $mongo = new MongoClient();    $db = $mongo->mydb;    $mycol = $db->mycol;    $mycol->remove(array('name'=>'test1'));    $mongoCursor = $mycol->find();    foreach ($mongoCursor as $document) {        var_dump($document);    }} catch (MongoConnectionException $e) {    echo $e->getMessage();}

Remove method

public bool|array MongoCollection::remove ([ array $criteria = array() [, array $options = array() ]] )

Options:

"W": the level of the thrown exception. the default value is 1;

"JustOne": only one matching record can be deleted;

"Fsync": Boolean, defaultsFALSE. Forces the insert to be synced to disk before returning success. IfTRUE, An acknowledged insert is implied and will override settingWTo0.

"Timeout": Integer, defaultsExport cursor: $ timeout. If "safe" is set, this sets how long (in milliseconds) for the client to wait for a database response. if the database does not respond within the timeout period, aMongoCursorTimeoutException will be thrown.

......

For other methods, see The php Manual: http://php.net/manual/zh/book.mongo.php

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