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    PHP – how to initialize static variables

    By admin on Jan 9, 2016

    Sometimes we need to populate static variables in php (e.g. populating associative arrays from existing arrays). Easiest way is to define a static function (e.g. init()) and then call it statically after the class.

    <?php
    class Foo {
      static $a = ["foo", "bar"];
      static $aa = array();
      static function init () {
        foreach (self::$a as $val) {
          self::$aa[$val] = 1;
        }
      }
    }
    Foo::init();
    print_r(Foo::$aa);
    ?>
    Array
    (
        [foo] => 1
        [bar] => 1
    )
    
    Env: PHP 7.3.18 (Linux)

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    Posted in Tutorials | Tagged PHP, PHP cookbook, Tutorials

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