global not solving my problem
[email protected] (Fred Silsbee)
| Newsgroups | php.db |
|---|---|
| Message-ID | <[email protected]> |
problem:
I have resolved all problems in the PHP program below except one.
Yes I know the program is in a mess but I will clean it up.
This is a learning exercise!
Basically there is one function per page.
When I make a selection on a page, a function is executed.
I need to pass the value of $rowInsert from one page to another.
$rowInsert is altered when I enter the program (at the top).
To verify the program works (outside this problem), I set the value = 525.
Global does not persist the value between pages(functions).
I can't use _POST because the value of $rowInsert is not associated with an entry slot(edit control).
I could make an entry slot(edit control) just for this purpose but that is not good!
<?php
/*
drop sequence log_id;
create sequence log_id
increment by 1
start with 1;
drop table log_book_id;
create table log_book_id ( log_id number primary key, fdate date, actype varchar2(16), acid varchar(16), nlandings number, nhoursnumber);
insert into log_book_id values (logid.nextval, TO_DATE('08/12/1973','MM/dd/YYYY'),'C150','N5787G',1,1.8);
insert into log_book_id values (logid.nextval, TO_DATE('08/17/1973','MM/dd/YYYY'),'C150','N5787G',3,1.5);
insert into log_book_id values (logid.nextval, TO_DATE('08/26/1973','MM/dd/YYYY'),'C150','N5787G',10,1.8);
insert into log_book_id values (logid.nextval, TO_DATE('09/01/1973','MM/dd/YYYY'),'C150','N5293S',9,1.7);
*/
print("........................................ENTER................");
$rowInsert = 525; // temporary
$db = "(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SID = LMKIIIGDNSID)
)
)";
if ($conn=oci_connect('landon', 'rumprocella',$db))
{
echo "Successfully connected to Oracle.\n";
}
else
{
$err = OCIError();
echo "Oracle Connect Error " . $err['message'];
}
//construct a global variable for the form profile
$fields = array("fdate", "actype", "acid", "nlandings", "nhours");
///
// If the submit button has been pressed
if (isset($_POST['select'])){
displayDeleteForm();
}elseif(isset($_POST['delete'])){
deleteRecords();
} elseif(isset($_POST['insert'])){
insertRecord();
} elseif (isset($_POST['new'])){
displayEntryForm();
} elseif (isset($_POST['update'])){
showRecord();
} else {
//default action
displayEntryForm();
}
//...........................................................................function displayDeleteForm()
function displayDeleteForm(){
//get $fields into the function namespace
global $fields;
global $conn;
/* Create and execute query. */
// Loop through each row, outputting the actype and name
echo <<<HTML
Pilots Logbook entries stored in Oracle Relational Database
under Redhat Fedora 8 Linux
<form action="{$_SERVER['PHP_SELF']}" method="post">
<table width="50%" align="center" border="1">
<tr>
<th>checked</th>
<th>rowID</th>
<th>fdate</th>
<th>actype</th>
<th>acid</th>
<th>nlandings</th>
<th>nhours</th>
</tr>
HTML;
//get log_book_id table information
$user = "select * from log_book_id";
$result = oci_parse($conn, $user);
$r = oci_execute($result);
//display log_book_id information
$count = 0;
while ($newArray = oci_fetch_assoc($result)) {
if ($count == 0) print_r($newArray);
$count = 1;
foreach ($fields as $field){
$fieldx = strtoupper($field);
${$field} = $newArray[$fieldx];
$count = $count +1;
// print($field);
// print_r($newArray[$field]);
}
$rowID = $newArray['LOG_ID'];
//note that we do not rely on the checkbox value as not all browsers submit it
//instead we rely on the name of the checkbox.
echo <<<HTML
<TR>
<td>
<input type="checkbox" name="checkbox[$rowID]" value="$rowID">Check to delete record
</td>
<TD>$rowID</TD>
<TD>$fdate</TD>
<TD>$actype</TD>
<TD>$acid</TD>
<TD>$nlandings</TD>
<TD>$nhours</TD>
</TR>
HTML;
} // while
echo <<<HTML
<tr>
<td colspan="7">
<input type="submit" name="delete" value="delete checked items"/>
<input type="submit" name="update" value="update checked items"/>
<input type="submit" name="new" value="New Log Entry" />
<input type="reset" name="reset" value="Reset Form" />
</td>
</tr>
</table>
</form>
HTML;
} //close function
// ................................................................. function deleteRecords()
//
function deleteRecords()
{
$db = "(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SID = LMKIIIGDNSID)
)
)";
// Loop through each log_book_id with an enabled checkbox
if (!isset($_POST['checkbox'])){
return true;
}
//else
foreach($_POST['checkbox'] as $key=>$val){
$toDelete[] = $key;
}
//expand the array for an IN query
$where = implode(',', $toDelete);
if ($conn=oci_connect('landon', 'rumprocella',$db))
{
echo "Successfully connected to Oracle D.\n";
}
else
{
$err = OCIError();
echo "Oracle Connect Error " . $err['message'];
}
$query = "DELETE FROM log_book_id WHERE log_id IN ($where)";
echo($query);
$result = oci_parse($conn, $query);
$r = oci_execute($result);
// Commit transaction
$committed = oci_commit($conn);
// Test whether commit was successful. If error occurred, return error message
if (!$committed) {
$error = oci_error($conn);
echo 'Commit failed. Oracle reports: ' . $error['message'];
}
// Should have one affected row
if ((oci_num_rows($result)== 0) ) {
echo "<p>There was a problem deleting some of the selected items.</p><p>".oci_error().'</p>';
// exit();
} else {
echo "<p>The selected items were successfully deleted.</p>";
}
//direct the user back to the delete form
displayDeleteForm();
} //end function
//...........................................................................function insertRecord()
function insertRecord()
{
global $rowInsert;
$db = "(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SID = LMKIIIGDNSID)
)
)";
if ($conn=oci_connect('landon', 'rumprocella',$db))
{
echo "Successfully connected to Oracle.\n";
}
else
{
$err = OCIError();
echo "Oracle Connect Error " . $err['message'];
}
// Retrieve the posted log book information.
global $fields;
//add some very crude validation
foreach ($fields as $field){
if (empty($_POST[$field])){
$messages[] = "You must complete the field $field \r\n";
} else {
$dFields[$field] = mysql_real_escape_string(trim($_POST[$field]));
}
}
if (count($messages)>0) {
displayEntryForm($messages, $dFields);
exit();
}
//end validation
//get variables into the namespace
extract($dFields);
// Insert the log book information into the log book table
print("insertRecord".$rowInsert);
if($rowInsert)
{
$query = "UPDATE log_book_id set fdate = '$fdate', actype='$actype', acid='$acid', nlandings='$nlandings', nhours='$nhours' where log_id='$rowInsert'";
}
else
{
$query = "INSERT INTO log_book_id (log_id , fdate, actype, acid, nlandings, nhours) values (logid.nextval,'$fdate','$actype','$acid','$nlandings','$nhours')";
}
$rowInsert = 0;
// echo ($query);
$result = oci_parse($conn, $query);
$r = oci_execute($result);
// Display an appropriate message
if ($r) {
echo "<p>Product successfully inserted!</p>";
}else {
echo "<p>There was a problem inserting the log book!</p>";
$error = oci_error($conn);
echo 'Insert failed. Oracle reports: ' . $error['message'];
}
//direct the user back to the entry form
// Commit transaction
$committed = oci_commit($conn);
// Test whether commit was successful. If error occurred, return error message
if (!$committed) {
$error = oci_error($conn);
echo 'Commit failed. Oracle reports: ' . $error['message'];
}
// Should have one affected row
if ((oci_num_rows($result)== 0) ) {
echo "<p>There was a problem inserting some of the selected items.</p><p>".oci_error().'</p>';
// exit();
} else {
echo "<p>The selected items were successfully inserted.</p>";
}
displayDeleteForm();
}
//...........................................................................function showRecord()
function showRecord() {
global $fields;
global $dFields;
global $rowInsert;
// Loop through each log_book_id with an enabled checkbox
if (!isset($_POST['checkbox'])){
return true;
}
//else
foreach($_POST['checkbox'] as $key=>$val){
$toDelete[] = $key;
}
$db = "(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SID = LMKIIIGDNSID)
)
)";
if ($conn=oci_connect('landon', 'rumprocella',$db))
{
echo "Successfully connected to Oracle.\n";
}
else
{
$err = OCIError();
echo "Oracle Connect Error " . $err['message'];
}
// errors
//get log_book_id table information
$user = "select * from log_book_id where log_id = $toDelete[0]";
$result = oci_parse($conn, $user);
$r = oci_execute($result);
//display log_book_id information
$count = 0;
$newArray = oci_fetch_assoc($result);
if ($count == 0) print_r($newArray);
$count = 1;
foreach ($fields as $field){
$fieldx = strtoupper($field);
${$field} = $newArray[$fieldx];
$dFields[$field] = ${$field};
}
$rowID = $newArray['LOG_ID'];
$rowInsert = $rowID;
print_r($dFields);
print ($rowInsert);
//note that we do not rely on the checkbox value as not all browsers submit it
//instead we rely on the name of the checkbox.
// insert the row information in the entry form
global $fields;
//end validation
displayEntryForm();
}
//...........................................................................function displayEntryForm()
function displayEntryForm($errorMessages=null, $dFields=null){
if (!empty($errorMessages)){
echo "<ul><li>".explode('</li><li>', $errorMessages) . "</li></ul>";
}
global $dFields;
//sort out field values
global $fields;
foreach ($fields as $field){
if (isset($dFields[$field])){
${$field} = $dFields[$field];
} else {
${$field} = '';
}
}
echo <<<HTML
<form action="{$_SERVER['PHP_SELF']}" method="post">
<p>
Flight Date:<br />
<input type="text" size="20" maxlength="40" name="fdate"
value="$fdate" />
</p>
<p>
Aircraft Type:<br />
<input type="text" size="20" maxlength="40" name="actype"
value="$actype" />
</p>
<p>
Aircraft ID:<br />
<input type="text" size="20" maxlength="40" name="acid"
value="$acid" />
</p>
<p>
Number Landings:<br />
<input type="text" size="20" maxlength="40" name="nlandings"
value="$nlandings" />
</p>
<p>
Number Hours:<br />
<input type="text" size="20" maxlength="40" name="nhours"
value="$nhours" />
</p>
<button type="submit" name = "insert" value="Insert Row!"
style="color:maroon font:18pt Courier; font-weight:bold ">Insert Row
</button>
<button type="submit" name = "select" value="Show All!"
style="color:red font:18pt Courier; font-weight:bold ">Show All
</button>
<button type="submit" name = "delete" value="Delete Row!"
style="color:red font:18pt Courier; font-weight:bold ">Delete Row!
</button>
<button type="submit" name = "update" value="Update Row!"
style="color:red font:18pt Courier; font-weight:bold ">Update Row!
</button>
</form>
HTML;
} //end display function
?>