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tempnam(dir,prefix)
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dir ±ØÐè¡£¹æ¶¨´´½¨ÁÙʱÎļþµÄĿ¼¡£
prefix ±ØÐè¡£¹æ¶¨ÎļþÃûµÄ¿ªÍ·¡£

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Ìáʾ£º²Î¼û tmpfile()

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<?php
echo tempnam("C:\inetpub\testweb","TMP0");
?> 

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C:\inetpub\testweb\TMP1.tmp
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