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<?php |
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require_once realpath(__DIR__ . '/../vendor/autoload.php'); |
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/* |
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* For example, we have big project with users stored in some storage. |
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* The main entity for us – users. |
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* Users could have the dozens of flags (true/false states). For example: |
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* - is premium user; |
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* - has wizard already shown; |
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* - has paid ever; |
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* - is referral user, bought from somewhere; |
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* - ... etc ... |
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* - is banned; |
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* - ... etc ... |
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* - has already notified today... |
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* |
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* We can create dozens of columns with type BOOLEAN for each flags |
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* or just one column with array of integers (simple bitmasks). |
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*/ |
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define('IS_PREMIUM', 1); |
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define('HAS_WIZARD_ALREADY_SHOWN', 2); |
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define('HAS_PAID_EVER', 3); |
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define('IS_REFERRAL', 4); |
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// ... |
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define('IS_BANNED', 64); // bitmask number greater than 64*1-1 |
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// ... |
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define('HAS_ALREADY_NOTIFIED', 128); // bitmask number greater than 64*2-1 |
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// some users from storage |
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$user = [ |
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'bitmasks' => [], // default empty bitmasks |
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]; |
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36
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// create a Bitmask object, passing user bitmask from storage |
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$Bitmask = new \Aliance\InfiniteBitmask\InfiniteBitmask($user['bitmasks']); |
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checkFlags($Bitmask); |
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// set user some flags |
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$Bitmask->setBit(HAS_PAID_EVER); |
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$Bitmask->setBit(IS_BANNED); |
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$Bitmask->setBit(HAS_ALREADY_NOTIFIED); |
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checkFlags($Bitmask); |
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var_dump($Bitmask->getMaskSlices()); |
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// unset daily flag |
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$Bitmask->unsetBit(HAS_ALREADY_NOTIFIED); |
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checkFlags($Bitmask); |
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var_dump($Bitmask->getMaskSlices()); |
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function checkFlags(\Aliance\InfiniteBitmask\InfiniteBitmask $Bitmask) |
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{ |
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echo 'Check user for all flags:', PHP_EOL; |
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echo 'Premium: ', $Bitmask->issetBit(IS_PREMIUM) ? 'yes' : 'no', PHP_EOL; |
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echo 'Wizard already shown: ', $Bitmask->issetBit(HAS_WIZARD_ALREADY_SHOWN) ? 'yes' : 'no', PHP_EOL; |
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echo 'Paid ever: ', $Bitmask->issetBit(HAS_PAID_EVER) ? 'yes' : 'no', PHP_EOL; |
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echo 'Referral: ', $Bitmask->issetBit(IS_REFERRAL) ? 'yes' : 'no', PHP_EOL; |
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echo 'Banned: ', $Bitmask->issetBit(IS_BANNED) ? 'yes' : 'no', PHP_EOL; |
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echo 'Already notified: ', $Bitmask->issetBit(HAS_ALREADY_NOTIFIED) ? 'yes' : 'no', PHP_EOL; |
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echo str_repeat('–', 35), PHP_EOL; |
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} |
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Aliance /
InfiniteBitmask
