[wp-trac] [WordPress Trac] #61782: Memoize wp_get_wp_version

[WordPress Trac]

#61782: Memoize wp_get_wp_version
--------------------------+-----------------------------
 Reporter:  Cybr          |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 `wp_get_wp_version()` currently requires a file whenever it's being
 called. This file is being required every time the function is called.

 {{{#!php
 <?php
 function wp_get_wp_version() {
         require ABSPATH . WPINC . '/version.php';

         return $wp_version;
 }
 }}}

 We can memoize the return value using the static keyword. This will make
 the file-requiring happen only once. At just 1000 iterations, this
 memoization is already 160 times faster (from 0.1000s to 0.0006s execution
 time).

 {{{#!php
 <?php
 function wp_get_wp_version() {

         static $wp_version;

         if ( empty( $wp_version ) )
                 require ABSPATH . WPINC . '/version.php';

         return $wp_version;
 }
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/61782>
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