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$time = "2010-03-27 12:47:24";
//ÏëÒª±ä³É"20100327124724";


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PHP code:

$time = "2010-03-27 12:47:24";
$time = str_ireplace(array('-', ' ', ':'), array('', '', ''), $time);
echo $time;



$time = "2010-03-27 12:47:24";
echo date('YmdHis', strtotime($time)); //20100327124724

$time = "2010-03-27 12:47:24";
echo preg_replace('/[^\d]/', '', $time); //20100327124724

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PHP code:

$date = '2009-12-25';
$ptn = '/([\d]{4})[- \/](0?[\d]|1[0-2])[-\/ ](0?[\d]|[1-2][\d]|3[0-1])/';
if (preg_match($ptn,$date,$out))
{
print_r($out);exit();
}
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