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@ 2015-10-14T18:05:33Z

<?php
  echo"<script language='javascript'>
 
 (function ($) /* Wraps this `$ = jQuery` routine. */ {
           $.fn.swapWith = function (to) /* Utility extension for jQuery. */
           {
               return this.each(function () {
                   var $to = $(to).clone(true),
                       $from = $(this).clone(true);
                   $(to).replaceWith($from), $(this).replaceWith($to);
               });
           };
           /**/
           $(document).ready(function () /* Handles email-to-username on keyup. */ {
               var email = 'input#user_email',
                   login = 'input#user_login';
               $(email).closest('p').swapWith($(login).closest('p')), $(email).keyup(function () {
                   $(login).val($.trim($(email).val().split(/@/)[0].replace(/[^\w]/gi, '')));
               });
           });
       })(jQuery);
</script>
";
?>

Output for git.master, git.master_jit, rfc.property-hooks: Warning: Undefined variable $to in /in/SnlaB on line 8 Warning: Undefined variable $from in /in/SnlaB on line 9 Warning: Undefined variable $from in /in/SnlaB on line 10 Warning: Undefined variable $to in /in/SnlaB on line 10 <script language='javascript'> (function ($) /* Wraps this `$ = jQuery` routine. */ { $.fn.swapWith = function (to) /* Utility extension for jQuery. */ { return this.each(function () { var = $(to).clone(true), = $(this).clone(true); $(to).replaceWith(), $(this).replaceWith(); }); }; /**/ $(document).ready(function () /* Handles email-to-username on keyup. */ { var email = 'input#user_email', login = 'input#user_login'; $(email).closest('p').swapWith($(login).closest('p')), $(email).keyup(function () { $(login).val($.trim($(email).val().split(/@/)[0].replace(/[^\w]/gi, ''))); }); }); })(jQuery); </script>

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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