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      \n\n\n\n

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        \n\n\n\n

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          \n
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          \n\n\n\n

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            \n
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            php $lock = fopen('\/tmp\/lockfile', 'w'); if (flock($lock, LOCK_EX)) { \/\/ \u6267\u884c\u4efb\u52a1 flock($lock, LOCK_UN); } fclose($lock);<\/code><\/li>\n\n\n\n
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            \n\n\n\n

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              \n
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