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Introduction to the differences between operators::, ->, self and $this in PHP_PHP Tutorial
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- 2016-07-21 15:11:56843browse
When accessing member variables or methods in a PHP class, if the referenced variable or method is declared as const (defining constant) or static (declaring static), then you must use the operator::, otherwise if the referenced variable or method If the method is not declared const or static, the operator -> must be used.
In addition, if you access a const or static variable or method from within the class, you must use self-reference. On the contrary, if you access a non-const or static variable or method from within the class, you must use self. Self-referential $this.
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