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Home Backend Development PHP Tutorial Problem with phalcon database module

Problem with phalcon database module

Aug 04, 2016 am 09:19 AM
phalcon php

The company did not use the class library provided by phalcon to operate the database, but used PhalconDbAdapterPdoMysql to encapsulate it again. However, I found that many methods in it have problems. Please help me.

For example

$statement = $db->prepare('SELECT * FROM robots WHERE name = :name');
$result = $connection->executePrepared($statement, array('name' => 'Voltron') );
This piece of code does not run smoothly and always reports an error with wrong value

And this one
$resultset = $connection->query("SELECT * FROM robots WHERE type='mechanical'");
$resultset = $connection->query("SELECT * FROM robots WHERE type=?" , array("mechanical"));
What is returned is not an array, but there is no explanation that the result set of the array can be retrieved again using the explanation method

Anyway, just wait. . . The above examples are all from official documents

Reply content:

The company did not use the class library provided by phalcon to operate the database, but used PhalconDbAdapterPdoMysql to encapsulate it again. However, I found that many methods in it have problems. Please help me.

For example

$statement = $db->prepare('SELECT * FROM robots WHERE name = :name');
$result = $connection->executePrepared($statement, array('name' => 'Voltron') );
This piece of code does not run smoothly and always reports an error with wrong value

And this one
$resultset = $connection->query("SELECT * FROM robots WHERE type='mechanical'");
$resultset = $connection->query("SELECT * FROM robots WHERE type=?" , array("mechanical"));
What is returned is not an array, but there is no explanation that the result set of the array can be retrieved again using the explanation method

Anyway, just wait. . . The above examples are all from official documents

First of all, the placeholder of the "executePrepared" method should be numeric. As in English in the red box of the document:

Problem with phalcon database module

That is, the parameter binding placeholder in your SQL should be replaced with "?", as follows: 

    $statement=$db->prepare('SELECT * FROM robots WHERE name = ?');
    $result=$connection->executePrepared($statement, array('Voltron'));

Secondly, the query method itself returns an object instance. This is explained in the document, and it also explains how to return an array:

Problem with phalcon database module

Here I will give you another sample code: 

        $result = $connection -> query($sql);
        $result -> setFetchMode(Db::FETCH_ASSOC);
        $array = $result -> fetchAll();

Friendly reminder: read more documents:)

Reference document: link description
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