CODEWITHSUNDEEP
phpmysqlpreparepdo
dchayka
dchayka

Reputation: 1302

How does PDO::prepare() generates a PDOStatement object?

How is the readonly $queryString property being set inside PDOStatement class by the PDO::prepare() execution?

Given the class definition, I don't see any functions which would set that query. Does that mean PDOStatement class can't be used if it's not generated by the PDO class instance through PDO::prepare() function?

Upvotes: 0

Views: 125

Answers (2)

Your Common Sense
Your Common Sense

Reputation: 157895

PDOstatement is created internally, by means of C code. And of course C code can set any properties directly.

And yes, you cannot use PDOStatement class (for anything useful) if it's not generated by the PDO class instance through PDO::prepare() (or query()).

However, you can redeclare and tell PDO to use it instead of standard one using code like this 

$pdo->setAttribute(PDO::ATTR_STATEMENT_CLASS, ['myPDOStatement', [$pdo]]);

Upvotes: 1

AbcAeffchen
AbcAeffchen

Reputation: 14987

From the manual:

Introduction

[The PDOStatement class] Represents a prepared statement and, after the statement is executed, an associated result set.

This looks like it has to be created by PDO::prepare().

But is this a problem? I cannot say that I came across a situation where I want to create an PDOStatement object by hand.

Upvotes: 0

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