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I can't understand. :( When Alex is writing the IF statement, he tells us the $name variable is NULL. Why is that? It's confusing to me. I need a better explanation because Alex is making the variable $name equal to 'Alex'. And... I guess the $name variable is not NULL anymore.

ovidiudrobota
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Thanks for the explanation, but I still have a little bit of confusion since I'm used to the Java environment.
I have a question which is, does the unset function free the space allocated for the passed variable ?
And if so, does php consider a variable that has no space allocated in memory to be null?

-Description of unset function from PHP Manual: "unset() destroys the specified variables."

Abu.Karrar
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hi, thank you for all tutorials  you are making, really.
what is the software that you use for developping? can you tell me please
 

TrcerTong
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