V.Shakya Software Developer & Consultant 
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Variables are “containers” for storing information:
Example
<?php
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$x=5; |
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$y=6; |
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$z=$x+$y; |
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echo $z; |
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?>
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Much Like Algebra
x=5
y=6
z=x+y
In algebra we use letters (like x) to hold values (like 5).
From the expression z=x+y above, we can calculate the value of z to be 11.
In PHP these letters are called variables.
