Code Duplication    Length = 7-7 lines in 3 locations

src/voku/cache/AdapterFile.php 1 location

@@ 19-25 (lines=7) @@
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    {
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        $path = $this->getFileName($key);
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        if (
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            \file_exists($path) === false
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            ||
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            \filesize($path) === 0
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        ) {
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            return null;
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        }
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        // init
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        $string = '';

src/voku/cache/AdapterOpCache.php 1 location

@@ 48-54 (lines=7) @@
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    {
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        $path = $this->getFileName($key);
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        if (
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            \file_exists($path) === false
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            ||
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            \filesize($path) === 0
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        ) {
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            return null;
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        }
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        /** @noinspection PhpIncludeInspection */
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        $data = include $path;

src/voku/cache/AdapterFileSimple.php 1 location

@@ 41-47 (lines=7) @@
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    {
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        $path = $this->getFileName($key);
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        if (
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            \file_exists($path) === false
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            ||
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            \filesize($path) === 0
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        ) {
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            return null;
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        }
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        // init
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        $string = \file_get_contents(