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<?php
// both lines output 813470400
echo strtotime("19951012"), "\n",
strtotime("12 October 1995");
// prints 1995 Oct 12
echo date("Y-m-d", strtotime("19951012"));
?>
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$sql_date_YYYY-MM-DD = '2024-09-03';
echo $mynewdate = date('d-m-Y, strtotime($sql_date_YYYY-MM-DD); // 03-09-2024
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$var = '20/04/2012';
$date = str_replace('/', '-', $var);
echo date('Y-m-d', strtotime($date));