PHP error unexpected '[' with php 5.3 -

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this question has answer here:

i can not use newer php version 5.3 , error message:

**parse error: syntax error, unexpected '[' in path/product.php on line 17**

i founded on page php version problem, how can solve in php 5.3?

the code on line exactly:

$_productids = [];

old version doesn't support syntax. update to:

$_productids = array();

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