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Re: adding a method to a built-in class ? [message #179503 is a reply to message #179474]

Fri, 02 November 2012 19:27

Thomas 'PointedEars'
Messages: 701
Registered: October 2010

Karma:

Senior Member

Gregor Kofler wrote:

> Am 2012-10-30 13:05, Une Bévue meinte:
>> newbie to php5, i'd like to know if i could add a method to a built-in
>> class.
>>
>> The purpose is to ass #to_sql() method to the String class.
>>
>> #to_sql() would just replace any oiccurence of the character "'" by two
>> of it "''".
>
> There is no such thing as a "string class" in PHP (apart from an
> experimental SplString class). However, you can extend the already
> mentioned Mysqli and Pdo classes and create subclasses tailored to your
> needs.

However, in this particular case that would be unwise, because that user-
defined to_sql() method would hardly be sufficient to escape string values
in SQL statements safely, and it would most likely be unnecessary to write
in the first place.

The OP should look into mysql_real_escape_string() if they have to use the
`mysql' extension, or learn about Prepared Statements (PS) if they can use
the `mysqli' extension or PDO, instead. A solution with PS is strongly
recommended.

PointedEars
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[Message index]

		adding a method to a built-in class ? By: Une Bvue[1] on Tue, 30 October 2012 12:05
		Re: adding a method to a built-in class ? By: M. Strobel on Tue, 30 October 2012 12:38
		Re: adding a method to a built-in class ? By: Une Bvue[1] on Tue, 30 October 2012 13:42
		Re: adding a method to a built-in class ? By: Gregor Kofler on Wed, 31 October 2012 10:09
		Re: adding a method to a built-in class ? By: Une Bvue[1] on Wed, 31 October 2012 14:08
		Re: adding a method to a built-in class ? By: Thomas 'PointedEars' on Fri, 02 November 2012 19:27

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