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42 lines
1.0 KiB
42 lines
1.0 KiB
10 years ago
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<?php
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class RSSDb
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{
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protected $hDatabase = null;
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protected $minId = 0;
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protected $bits = array(0=>1, 2, 4, 8, 16, 32, 64, 128);
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public function __construct($dbFile, $minId = 0)
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{
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fclose(fopen($dbFile, 'a')); // create file if not exists
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$this->hDatabase = fopen($dbFile, 'r+');
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$this->minId = $minId;
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}
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public function __destruct()
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{
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fclose($this->hDatabase);
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}
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public function isPublished($id)
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{
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$id -= $this->minId;
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if ($id < 0) return true;
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$pos = intval($id/8);
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fseek($this->hDatabase, $pos);
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$status = ord(fgetc($this->hDatabase));
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return (bool)($status & $this->bits[$id % 8]);
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}
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public function setPublished($id)
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{
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$id -= $this->minId;
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if ($id < 0) return;
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$pos = intval($id/8);
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fseek($this->hDatabase, $pos);
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$status = ord(fgetc($this->hDatabase));
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fseek($this->hDatabase, $pos);
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fwrite($this->hDatabase, chr($status | $this->bits[$id % 8]));
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}
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}
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