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Barneybook/microtime.php

Created September 3, 2013 10:34
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取出時間的微秒 10^(-6) $usec是微秒的數值，要先放大一百萬倍，並補上零，當作小數點後的字串
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microtime.php
function microtime_float()
{
list($usec, $sec) = explode(" ", microtime());
return (str_pad((float)$usec *1000000 /*+ (float)$sec*/,6,'0',STR_PAD_LEFT));
// str_pad($value,3,'0',STR_PAD_LEFT);
}
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