CODEWITHSUNDEEP
phparrays
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Reputation: 23

PHP: Array declaration and named variable

What is the deference between array('hi'=>$hello) and array(':hi'=>$hello)

I am using the second form to insert my data using prepare statement by extending PDO which is working fine. However when I change array declaration to first form array('hi'=>$hello) no data is being inserted, I was wondering how they both work.

Upvotes: 2

Views: 51

Answers (2)

Matt Magallo
Matt Magallo

Reputation: 326

':hi' is a named variable and also an index/key in your array this can pass values to your database (Used in PDO).

'hi' is just an index/key in your array

Upvotes: 1

Kalkran
Kalkran

Reputation: 334

Your first example:

array('hi' => $hello);

creates a key called 'hi', and your second example creates a key :hi. To use PDO parameters you need to prepend the parameters with a colon. The colon is used to designate and identify the parameters. See PDO prepared statement - what are colons in parameter names used for?

Upvotes: 0

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