37 lines
1.5 KiB
PHP
37 lines
1.5 KiB
PHP
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<?php
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function ckratelimit($headers,$echofun,$onlyret=false,$verbose=false) {//$echofun has to be the name of a defined function to pass messages to
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$ret=null;
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if (is_array($headers)) {
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//echo "ckratelimit: {$headers}: ".print_r($headers,true));
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$buff=[];
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array_shift($headers);
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foreach ($headers as $header)
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if (preg_match('/^([^:]+):(.*)$/Uu',$header,$matches)===1)
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$buff[$matches[1]]=trim($matches[2]);
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$headers=$buff;
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//print_r($headers);
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if (isset($headers['Date']) && isset($headers['X-RateLimit-Reset']) && isset($headers['X-RateLimit-Remaining'])) {
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//Wed, 30 Mar 2022 21:27:22 GMT
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$srvnow=strtotime($headers['Date']);
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//2022-03-31T04:05:00.058705Z
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$srvrlreset=strtotime($headers['X-RateLimit-Reset']);
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$srvrlremain=$headers['X-RateLimit-Remaining'];
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$secstoreset=$srvrlreset-$srvnow;
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$ret=['remaining'=>$srvrlremain,'secstoreset'=>$secstoreset];
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if ($onlyret)
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return $ret;
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if ($verbose) $echofun("ckratelimit: X-RateLimit-Remaining: {$srvrlremain}; server time: {$srvnow}: ".gmdate('c',$srvnow).'; X-RateLimit-Reset: '.gmdate('c',$srvrlreset).'; current seconds before reset: '.$secstoreset.".\n");
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if ($srvrlremain==0) {
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$echofun("Reached rate limit, waiting {$secstoreset} seconds for rate limit reset ...\n");
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sleep($secstoreset);
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}
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} else {
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if ($verbose) $echofun("ckratelimit: no «Date» / «X-RateLimit-Reset» / «X-RateLimit-Remaining» header(s)!\n");
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}
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} else {
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if ($verbose) $echofun("ckratelimit: headers is not an array!\n");
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}
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return $ret;
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}
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?>
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