Podría armar un formulario de ingreso con el siguiente código, te va a ingresar la fecha y la hora actual.
Codigo:
<?php include ('cnx') ; ?>
<?php
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
{
$theValue = (!get_magic_quotes_gpc()) ? addslashes($theValue) : $theValue;
switch ($theType) {
case "text":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "long":
case "int":
$theValue = ($theValue != "") ? intval($theValue) : "NULL";
break;
case "double":
$theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
break;
case "date":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "defined":
$theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
break;
}
return $theValue;
}
$editFormAction = $HTTP_SERVER_VARS['PHP_SELF'];
if (isset($HTTP_SERVER_VARS['QUERY_STRING'])) {
$editFormAction .= "?" . $HTTP_SERVER_VARS['QUERY_STRING'];
}
if ((isset($HTTP_POST_VARS["MM_insert"])) && ($HTTP_POST_VARS["MM_insert"] == "form1")) {
$insertSQL = sprintf("INSERT INTO usuarios3 (ingreso) VALUES (%s)",
GetSQLValueString($HTTP_POST_VARS['ingreso'], "date"));
mysql_select_db($database_cnx_mecca, $cnx_mecca);
$Result1 = mysql_query($insertSQL, $cnx_mecca) or die(mysql_error());
}
?>
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body>
<form method="post" name="form1" action="<?php echo $editFormAction; ?>">
<table align="center">
<tr valign="baseline">
<td nowrap align="right">Ingreso:</td>
<td><input type="text" name="ingreso" value="<?php echo date("Y/m/d H:i:s") ?>" size="32"></td>
</tr>
<tr valign="baseline">
<td nowrap align="right"> </td>
<td><input type="submit" value="Insert Record"></td>
</tr>
</table>
<input type="hidden" name="MM_insert" value="form1">
</form>
<p> </p>
</body>
</html>
espero te ayude, esto lo probe y funciona
suerte