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  1. <?php
  2.  
  3. class MyCache {
  4.     static $instance = null;
  5.     static $ary = array();
  6.     protected $status = 0;
  7.  
  8.     private function __construct(){}
  9.  
  10.     static function getInstance() {
  11.         if (is_null(self::$instance)) {
  12.             self::$instance = new self();
  13.         }
  14.         return self::$instance;
  15.     }
  16.  
  17.     function get($key) {
  18.         if (isset(self::$ary[$key]) && self::$ary[$key]['time'] > microtime(true)) {
  19.             $this->status = 0;
  20.             return self::$ary[$key]['value'];
  21.         } else {
  22.             $this->status = 1;
  23.             return false;
  24.         }
  25.     }
  26.  
  27.     function set($key, $value, $time) {
  28.         self::$ary[$key] = array(
  29.             'value' => $value,
  30.             'time'  => $time + microtime(true),
  31.         );
  32.     }
  33.  
  34.     function getOrUpdate($key, $time) {
  35.         $value = $this->get($key);
  36.         if (($value === false) && ($this->status != 0)) {
  37.             $bt = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 2)[1];
  38.             $params = $bt['args'];
  39.             $params[count($params)-1] = false;
  40.             $value = call_user_func_array(
  41.                 isset($bt['type'])
  42.                     ? array(
  43.                         ($bt['type'] == '->') ? $bt['object'] : $bt['class'],
  44.                         $bt['function']
  45.                     )
  46.                     : $bt['function'],
  47.                 $params
  48.             );
  49.             $this->set($key, $value, $time);
  50.         }
  51.         return $value;
  52.     }
  53. }
  54.  
  55.  
  56. function globalLol($cache = false) {
  57.     if ($cache) {
  58.         return MyCache::getInstance()->getOrUpdate('lol', 0.5);
  59.     }
  60.     echo "# new lol\n";
  61.     return microtime();
  62. }
  63.  
  64. class Pysch {
  65.     function instanceLol($cache = false) {
  66.         if ($cache) {
  67.             return MyCache::getInstance()->getOrUpdate('instance_lol', 0.5);
  68.         }
  69.         echo "# new instance lol\n";
  70.         return microtime();
  71.     }
  72.     static function staticLol($cache = false) {
  73.         if ($cache) {
  74.             return MyCache::getInstance()->getOrUpdate('static_lol', 0.5);
  75.         }
  76.         echo "# new static lol\n";
  77.         return microtime();
  78.     }
  79. }
  80.  
  81. var_dump(globalLol(true));
  82. var_dump(globalLol(true));
  83. sleep(1);
  84. var_dump(globalLol(true));
  85. var_dump(globalLol(true));
  86.  
  87. var_dump(Pysch::staticLol(true));
  88. var_dump(Pysch::staticLol(true));
  89. sleep(1);
  90. var_dump(Pysch::staticLol(true));
  91. var_dump(Pysch::staticLol(true));
  92.  
  93. $pysch = new Pysch();
  94. var_dump($pysch->instanceLol(true));
  95. var_dump($pysch->instanceLol(true));
  96. sleep(1);
  97. var_dump($pysch->instanceLol(true));
  98. var_dump($pysch->instanceLol(true));
  99.  
Success #stdin #stdout 0.01s 20568KB
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stdin
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Standard input is empty
stdout
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# new lol
string(21) "0.90812700 1361103124"
string(21) "0.90812700 1361103124"
# new lol
string(21) "0.90837500 1361103125"
string(21) "0.90837500 1361103125"
# new static lol
string(21) "0.90850200 1361103125"
string(21) "0.90850200 1361103125"
# new static lol
string(21) "0.90872900 1361103126"
string(21) "0.90872900 1361103126"
# new instance lol
string(21) "0.90884200 1361103126"
string(21) "0.90884200 1361103126"
# new instance lol
string(21) "0.90907400 1361103127"
string(21) "0.90907400 1361103127"
https://ideone.com/S9B8Un
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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