mongodb php Strings to float values

问题

I tried make it from mongodb console, but it doesn't work, because I can not work with arrays like afrray[0] afrray[1] afrray[2] etc

How to change array elements

Now I try to do it from php, but i see only zeros in base ((((

What do I wrong?

$out = $collection->update(
        array("type" => 'chair'), array('$set' => array( 'vmfqvfjptu' => floatval('vmfqvfjptu'), 
        'versions.0.content.vmfqvfjptu'=> floatval('versions.0.content.vmfqvfjptu'),
        'versions.1.content.vmfqvfjptu'=> floatval('versions.1.content.vmfqvfjptu'),
        'versions.2.content.vmfqvfjptu'=> floatval('versions.2.content.vmfqvfjptu'),
        'versions.3.content.vmfqvfjptu'=> floatval('versions.3.content.vmfqvfjptu')
        )),
        array("multiple" => true)   
);

How can I send string from database near floatval('versions.0.content.vmfqvfjptu') ?

This script works good from mongo console. There are 4 scripts. Every one takes string from database, convert string to float and save float to database (for each documents in collection).

 db.documents.find({ 'fwtweaeeba' : {$exists : true}}).forEach( function(obj) { 
    obj.fwtweaeeba = parseFloat( obj.fwtweaeeba ); 
    db.documents.save(obj); } );    

db.documents.find({ 'versions.0.content.fwtweaeeba' : {$exists : true}}).forEach( function(obj) { 
    obj.versions[0].content.fwtweaeeba = parseFloat( obj.versions[0].content.fwtweaeeba ); 
    db.documents.save(obj); } );

db.documents.find({ 'versions.1.content.fwtweaeeba' : {$exists : true}}).forEach( function(obj) { 
    obj.versions[1].content.fwtweaeeba = parseFloat( obj.versions[1].content.fwtweaeeba );  
    db.documents.save(obj); } );

db.documents.find({ 'versions.2.content.fwtweaeeba' : {$exists : true}}).forEach( function(obj) { 
    obj.versions[2].content.fwtweaeeba = parseFloat( obj.versions[2].content.fwtweaeeba );  
    db.documents.save(obj); } );

I need make the same with php because I have a lot of fields in every document to convert...

It works !!!! Thank you, Sammaye !!! You really helped me!!!

foreach($db->documents->find(array("type" => "chair")) as $document){
//  my_dump($document[_id]);
    $db->documents->update(
        array('_id' => $document[_id]),
        array(
            '$set' => array(
                'versions.0.content.axdducvoxb' => (float)$document['versions'][0]['content']['axdducvoxb'],
                'versions.1.content.axdducvoxb' => (float)$document['versions'][1]['content']['axdducvoxb'],
                'versions.2.content.axdducvoxb' => (float)$document['versions'][2]['content']['axdducvoxb'],
                'axdducvoxb' => (float)$document['axdducvoxb']
            )
        ),
        array('$multi' => true)
    );


}

回答1:

Following on from the question you linked:

db.documents.find({"type": "chair"}).forEach(function(data) {   
    db.documents.update({_id:data._id},
                       {$set:{'versions.0.content.axdducvoxb':
                               parseFloat(data.versions.0.content.axdducvoxb)}}); 
})

Would be:

foreach($db->documents->find(array("type" => "chair")) as $document){
    $db->documents->update(
        array('_id' => $document['_id']),
        array(
            '$set' => array(
                'versions.0.content.axdducvoxb' => floatval($document['versions'][0]['content']['axdducvoxb'])
            )
        )
    );
}

There done. good answer

回答2:

For php, this

floatval('versions.0.content.vmfqvfjptu')

evaluates to false. Because it's not the value of the field from the db's collection

来源：https://stackoverflow.com/questions/22810612/mongodb-php-strings-to-float-values

标签

php

mongodb

mongodb-php