PHP Parse error syntax error unexpected T IMPLEMENTS expecting in X on line Y

0 votes

I'd like to create an interface, IFoo, that's basically a combination of a custom interface, IBar, and a few native interfaces, ArrayAccess, IteratorAggregate, and Serializable. PHP doesn't seem to allow interfaces that implement other interfaces, as I get the following error when I try:

PHP Parse error: syntax error, unexpected T_IMPLEMENTS, expecting '{' in X on line Y

I know that interfaces can extend other ones, but PHP doesn't allow multiple inheritance and I can't modify native interfaces, so now I'm stuck.

Do I have to duplicate the other interfaces within IFoo, or is there a better way that allows me to reuse the native ones?

Nov 5, 2020 in PHP by kartik
• 37,520 points
2,040 views

1 answer to this question.

0 votes

Hello @kartik,

You are looking for the extends keyword:

Interface IFoo extends IBar, ArrayAccess, IteratorAggregate, Serializable
{
    ...
}

answered Nov 5, 2020 by Niroj
• 82,840 points

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