Which of the following is the correct syntax for an if-else statement in PHP?

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Which of the following is the correct way to concatenate two strings in PHP?

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Which keyword is used to define a function in PHP?

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Which of the following is the correct way to create an indexed array in PHP?

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Which of the following is not a type of loop in PHP?

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What is the correct way to define a variable in PHP?

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What is the purpose of a proximity sensor in robotics?

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