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Learning PHP 7 High Performance by Altaf Hussain

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New operators

PHP 7 introduced two interested operators. These operators can help write less and cleaner code, so the final code will be more readable as compared to the traditional operators in use. Let's have a look at them.

The Spaceship operator (<=>)

The Spaceship or Combined Comparison operator is useful to compare values (strings, integers, floats, and so on), arrays, and objects. This operator is just a wrapper and performs the same tasks as the three comparison operators ==, <, and >. This operator can also be used to write clean and less code for callback functions for usort, uasort, and uksort. This operator works as follows:

  • It returns 0 if both the operands on left- and right-hand sides are equal
  • It returns -1 if the right operand is ...

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