MongoDB related Operations

1. Connect MongoDB

<?PHP//1. Connect to MongoDB    $host= "127.0.0.1"; $port= 27017; $server= "mongodb://$host:$port"; $mongodb=NewMongoclient ($server); Echo"<pre>"; Var_dump($mongodb); //2. Select a database    $db=$client-HYTC; Var_dump($db); //3. Select a data table    $collection=$db-user; Var_dump($collection);

Note: libraries, tables do not need to be created manually, automatically created after selection

2. CRUDOperation

Insert (data) inserts data (must be an array)

// Insert document (associative array)　　$data = ["Name" = "Xiao Ming", "Age" =>10, "hobby" = "swim"]; Insert ($data), $result$collection　　
　　Echo "<pre>";
　　Var_dump ($result);

Find (Find criteria, lookup fields) query data

    //Querying data (returns cursor cursor, resource)    $condition= [' Name ' = ' Xiao Ming ']; $fields= [        ' _id ' =false,//do not query ID' Name ' + =true,//Query Name' Hobby ' =true     //Query Hobby    ]; $result=$collection-Find ($condition,$fields); foreach($result  as $key=$value){        Echo"<pre>"; Var_dump($value); }

Update (Find condition, content after update, and content of document) updates data

    // Update Data    $condition = [' name ' = ' xiaoming '];     $new _doc = [        ' $set ' + = ["hobby" = "swim"]    ]    ; $result $collection Update ($condition,$new _doc);     Echo "<pre>";     Var_dump ($result);

Note:

• If the Hobby field does not exist, the field is created
• The default update is replaced by the property modifier instead of replacing
• If more than one record meets the update criteria, only the first data is updated by default
• If you want to update all records that meet the update criteria,set the third parameter of the function:["Multiple" =>true]

      // Update Data    $condition = [' age ' = ' + '];     $new _doc = [        ' $set ' + = ["hobby" = "swim"]    ]    ; $result Update $collection -$condition,$new _doc, [' multiple ' =true ]);     Echo "<pre>";     Var_dump ($result);

Remove (find condition) Delete data

    // Delete Data    $condition = [' name ' = ' xiaoming '];     $result $collection , remove ($condition);

MongoDB related Operations