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Q:
What is faster?

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1- Combining two variables as follows:

$variable1 = 'Hello ';

$variable2 = 'World';

$variable3 = $variable1.$variable2;

Or

2- $variable3 = "$variable1$variable2";

$variable3 will contain "Hello World". The first code is faster than the second code especially for large large sets of data.

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