What isthe role of having PHP4Constructor...Learn@FU-VISION

PHP 4 style constructors
PHP 4 style constructors that is methods having same name as the class they are defined in, are now deprecated, and will be removed in the future. PHP 7 will emit E_DEPRECATED if a PHP 4 constructor is only constructor defined within a class. Classes implementing a __construct() method are unaffected.
Static calls to non-static methods
Static calls to non-static methods are deprecated, and may be removed in the future.
password_hash() salt option
The salt option for the password_hash() function has been deprecated so that developers do not generate their own (usually insecure) salts. The function itself generates a cryptographically secure salt when no salt is provided by the developer - thus custom salt generation is not required any more.
capture_session_meta SSL context option
The capture_session_meta SSL context option has been deprecated. SSL metadata is now to be used through the stream_get_meta_data() function.

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