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What are WeakMap data structures?
Author: W3D TeamStatus: PublishedQuestion passed 1141 times
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PHP code that throws an error.4
Is this function signature valid?
```php
<?php
interface Demo
{
public function bar(): ?mixed;
}
```5
Check if a value is in an array in PHP4
Attributes are metadata that can be added to classes, properties, constants or methods.5
Which function signature is valid?5
PHP function with named and positional arguments.4
Use the match expression in PHP to print a string.