Введение в СУБД MySQL


here if no ID then

<html> <body> <?php $db = mysql_connect("localhost", "root"); mysql_select_db("mydb",$db);

if ($submit) { // here if no ID then adding else we're editing if ($id) { $sql = "UPDATE employees SET first='$first',last='$last', address='$address',position='$position' WHERE id=$id"; } else { $sql = "INSERT INTO employees (first,last,address,position) VALUES ('$first','$last','$address','$position')"; } // run SQL against the DB $result = mysql_query($sql); echo "Record updated/edited!<p>"; } else if ($delete) { // delete a record $sql = "DELETE FROM employees WHERE id=$id"; $result = mysql_query($sql); echo "$sql Record deleted!<p>"; } else { // this part happens if we don't press submit if (!$id) { // print the list if there is not editing $result = mysql_query("SELECT * FROM employees",$db); while ($myrow = mysql_fetch_array($result)) { printf("<a href=\"%s?id=%s\">%s %s</a> \n", $PHP_SELF, $myrow["id"], $myrow["first"], $myrow["last"]); printf("<a href=\"%s?id=%s&delete=yes\">(DELETE)</a><br>", $PHP_SELF, $myrow["id"]); } } ?> <P> <a href="<?php echo $PHP_SELF?>">ADD A RECORD</a> <P> <form method="post" action="<?php echo $PHP_SELF?>"> <?php if ($id) { // editing so select a record $sql = "SELECT * FROM employees WHERE id=$id"; $result = mysql_query($sql); $myrow = mysql_fetch_array($result); $id = $myrow["id"]; $first = $myrow["first"]; $last = $myrow["last"]; $address = $myrow["address"]; $position = $myrow["position"]; // print the id for editing ?> <input type=hidden name="id" value="<?php echo $id ?>"> <?php } ?> First name:<input type="Text" name="first" value="<?php echo $first ?>"><br> Last name:<input type="Text" name="last" value="<?php echo $last ?>"><br> Address:<input type="Text" name="address" value="<?php echo $address ?>"><br> Position:<input type="Text" name="position" value="<?php echo $position ?>"><br> <input type="Submit" name="submit" value="Enter information"> </form> <?php } ?> </body> </html> Листинг 12.5. Закрыть окно
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