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TN 12th Computer Applications மின்னணு தரவு பரிமாற்றம் Sample Question Papers Study Material - QB365 Set A

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TN 12th Computer Applications மின்னணு செலுத்தல் முறைகள் Sample Question Papers Study Material - QB365 Set A

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TN 12th Computer Applications மின் - வணிகம் Sample Question Papers Study Material - QB365 Set A

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TN 12th Computer Applications திறந்த மூல கருத்துருக்கள் Sample Question Papers Study Material - QB365 Set A

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12th Standard English Medium Computer Applications Subject PHP Function and Array Book Back 3 Mark Questions with Solution updated Book back Questions

Published on: 13/05/2022

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Questions:

Generic 3

5 x 3 = 15

Differentiate Associate array and Multidimensional array.

Write Short notes on Array.

Differentiate user defined and system defined Functions.

Write the purpose of parameterized Function.

Write the features of built-in Functions.

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Answers Key:

Generic 3

5 x 3 = 15

Associate array	Multidimensional array
Associative arrays are arrays that use named keys that you assign to them.	An array containing one or more arrays.
It storing data in a liner	Multi-dimensional arrays that are two, three, four, five, or more levels deep.
We can associate the name with each array element in PHP using = > symbol.	It can be represented in the form of a matrix which is represented by row * column.

Array is a concept that stores more than one value of same data type in single array variable.
They are 3 types of array concepts in PHP.
(i) Indexed Arrays,
(ii) Associative Array and
(iii) Multi-Dimensional Array.
Usage of Array:
When combined with foreach statement which allows loop through an array quickly with very little code.

User defined Functions	System define Functions
(i) Functions are provided by the user. (ie) we can create own functions.	(i) Built-in function are functions that exist in PHP installation package.
(ii) Example function insertMsg() { echo "Helo world" } insertMsg();	(ii) Example rename_function()

To pass any number of parameters inside a function.
They are specified inside the parenthesis, after the function name.
Syntax:
function School Name($sname, $Strength)
{
echo $sname." in Tamilnadu and Student Strength is".$Strength;
}

1. PHP has more than 700 built-in functions that perform different tasks.
2. It exists in PHP installation package.
3. It is reusable piece
4. It can either return values when called or can simply perform an operation without returning any value.