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In other programming languages the definition of arrays is something which can hold similar kind of elements. For example if I declare something like int i[] it will store integers, but in PHP a single array seems to be holding strings and numbers together.
Will the number/integer be treated as string in such type of array in PHP?
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In PHP, there are three types of arrays: Indexed arrays - Arrays with a numeric index. Associative arrays - Arrays with named keys. Multidimensional arrays - Arrays containing one or more arrays.
The values assigned to the array are homogeneous in nature, it means the data type of all the values should be the same.
There is no max on the limit of an array. There is a limit on the amount of memory your script can use.
A multidimensional array is an array containing one or more arrays. PHP supports multidimensional arrays that are two, three, four, five, or more levels deep. However, arrays more than three levels deep are hard to manage for most people.
According to the PHP manual you can indeed store heterogeneous types inside a PHP "array" - scroll down to example 3.
Note that even though the example is about keys being ints or strings, the values assigned in the example are also both ints and strings, demonstrating that it is possible to store heterogeneous types.
Be aware that in the case of different-typed keys there is automatic casting involved so you may have surprising results in the case where e.g. a string contains a valid decimal representation.
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