php - Why should I make database wrapper? -

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i'm wondering why should need database wrapper php. wrapper mysqli or pdo. it's class calls pdo/mysqli class. why should need it? advantages? try make 1 - don't main goal. why need it?? =]

abstractions pdo intend make things more secure. database execution want "strongly typed" means prevented:

$mydangeroussql = "select * dba x ='"+$somevariable+"'";

the above result in called sql-injection.

when using pdo explicitly "x of type string" or whatever type use in database. in way statement can "prepared" , cannot "inject" new sql-code it. makes more secure.

this 1 of reasons though, biggest one. , don't write own wrapper/abstraction if it's not learning purpose, there lot of ones out there already.

here post talking database abstraction in php.


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