Dears
Please help me in this matter.
I have issue with my MySQL database.
It is working fine if I'm doing inserting records to the table. However, if I'm doing selecting and fetching, the result is 0 despite of the table actually have records.
$sql2 = 'SELECT * FROM `users`';
$result2 = $conn->query($sql2);
echo $result2->num_rows;
if ($result2->num_rows > 0) {
// output data of each row
while($row = $result2->fetch_assoc()) {
echo "id: " . $row["id"]. " - Name: " . $row["firstname"]. " " . $row["lastname"]. "<br>";
}
} else {
echo "0 results";
}
please help me guys I tried every thing I almost give up.
thanks,
Maybe you can try this code
<?php
try {
$conn = new PDO('mysql:host=localhost;dbname=contoh', "root", "root");
$conn->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );
$sql2 = 'SELECT * FROM `user_ranks`';
$result2 = $conn->query($sql2);
while($row = $result2->fetch()) {
$id = $row['id'];
$username = $row['username'];
$password = $row['password'];
$rank = $row['rank'];
}
}
catch (PDOException $e) {
print "connection or query have a problem: " . $e->getMessage() . "<br/>";
die();
}
<?php
$conn = mysql_connect("localhost","root","");
if(!$conn){
echo mysql_error();
}
$db = mysql_select_db("imagestore",$conn);
if(!$db ){
echo mysql_error();
}
$q = "SELECT * FROM imagetable";
$r = mysql_query("$q",$conn);
if($r)
{
while($row=mysql_fetch_array($r) )
{
header("Content-type: text/html");
echo "</br>";
echo $row['photoname'];
echo "</br>";
$type = "Content-type: ".$row['phototype'];
header($type);
echo "<img src=image.php?fotoid=". $row['fotoid']."width =300 height = 35. 300/>";
}
}
else{
echo mysql_error();
}
?>
I know ORDER by but is not working to display photos as i want in my page .
I am a beginner .
I used $q = "SELECT * FROM imagetable ORDER BY fotoid DESC";
trying to check to see if the file already exist but it doesn't work LINE 6
if(isset($_POST['upload']) && $_FILES['userfile']['size'] > 0)
{
$fileName = $_FILES['userfile']['name'];
$tmpName = $_FILES['userfile']['tmp_name'];
$fileSize = $_FILES['userfile']['size'];
$fileType = $_FILES['userfile']['type'];
if (file_exists($_FILES['userfile']['name']))
{
echo $_FILES['userfile"]["name'] . " already exists. ";
}else{
$fp= fopen($tmpName, 'r');
$content = fread($fp, filesize($tmpName));
$content = addslashes($content);
fclose($fp);
if(!get_magic_quotes_gpc())
{
$fileName = addslashes($fileName);
}
//include 'library/config.php';
//include 'library/opendb.php';
$query = "INSERT INTO upload (name, size, type, content )
VALUES ('$fileName', '$fileSize', '$fileType', '$content')";
mysql_query($query) or die('Error, query failed');
//include 'library/closedb.php';
echo "<br>File $fileName uploaded<br>";
}
}
$_FILES['userfile"]["name']
Make sure your opening quotes match the closing ones. Example valid strings are "this" and 'this', for example.
echo $_FILES['userfile']['name'] . " already exists. ";
echo $_FILES["userfile"]["name"] . " already exists. ";
// etc.
I am not too sure what i am doing wrong. i am trying to delete the entire row with this code but it is not working. No error is happening it prints the line that it was deleted but when i go and have a look it is not working. Any thoughts?
<?
$con = mysql_connect("localhost","username","password");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("theobse1_scores", $con);
$sql="DELETE FROM times WHERE id='$id'";
if (!mysql_query($sql,$con))
{
die('Error: ' . mysql_error());
}
echo "1 record deleted go back to delete another!";
mysql_close($con)
?>
You used $order instead of your query variable $sql
$sql="DELETE FROM times WHERE id='$id'";
mysql_query($sql);
I got it working using this code!
<?php
$id =$_REQUEST['id'];
$con = mysql_connect("localhost","username","password");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("database", $con);
// sending query
mysql_query("DELETE FROM times WHERE id = '$id'")
or die(mysql_error());
?>
else
{
$qry = "SELECT * FROM my_login WHERE email = '".$email."' LIMIT 1";
$res = mysql_query($qry);
if(mysql_num_rows($res) > 0)
{
echo "Email already exists!";
}
else
{
$qry="INSERT INTO my_login SET name='$name',city='$city',comment='$comt',password='$pass',email='$email'";
mysql_query($qry);
}
}
}
?>
delete.php
<?php
include "connect.php";
$id =$_REQUEST['id'];
// sending query
mysql_query("DELETE FROM utilizatori WHERE id = '$id'")
or die(mysql_error());
?>
is corect, I tested and delete from ID
and here is the button delete: `
<?Delete`?>
Is there some tool that can store for me the database structure, say in some xml file or something like that.
And later from the code it can generate for me the sql query for this database creation ?
Currently I am working with MySQL , but it probably does not matter .
Just I not want to maintain my self all those things.
In my experience I have used MySQL Workbench to take care of issues like this. If you download Workbench (assuming you don't have it already) from http://wb.mysql.com/ you will have the option to "Create an EER diagram from an existing database." This will create an EER diagram which is a good visual presentation of the database with which you are working. The .mwb file that you can then save can be loaded and then "forward engineered" into local/external database.
Mysqldump is another alternative to use at the command line. It will, by default, dump out the entire schema structure and contained data. However, if you are just looking for database structure including views and routines and you do not care about the data itself then you need to throw some extra parameters into the command.
In my experience Mysqldump is quick and easy whereas EER diagrams are easier to share with others and then forward engineer back onto other DBs from the Workbench application.
EDIT
You should note that just because you export the database create table queries to a .sql file or .mwb file that you can't just copy and paste the text into another platform (Microsoft SQL, Oracle, etc) and expect it to work. Syntax across different versions of SQL is (obviously) different.
THE FOLLOWING ANSWER USES PHP, I am keeping it here for future users.
I wrote code specifically to do that (in PHP):
$db = mysql_connect($dbhost, $dbuser, $dbpass) or die("MySQL Error: " . mysql_error());
mysql_select_db($dbname) or die("MySQL Error: " . mysql_error());
$allTables = Array
(
//put all table names in this array
);
foreach($allTables as $tbl){
define($tbl, $tbl);
}
$clm = '$columns';
$inds = '$indexes';
$query = "SHOW TABLES IN {$dbname}";
$tables = array();
$result = mysql_query($query) or die("ERROR ONE:".mysql_error());
while($row = mysql_fetch_array($result)){
$tables[] = $row["Tables_in_{$dbname}"];
}
//TO GET ARRAY FOR TABLE DISPLAY:
$cols = array();
foreach($tables as $tbl){
// echo "<br/>".
$query = "SHOW COLUMNS FROM $tbl";
$cols[$tbl] = array();
$result = mysql_query($query) or die("ERROR ONE:".mysql_error());
while($row = mysql_fetch_array($result)){
$cols[$tbl][] = array('Field'=>$row['Field'],
'Type'=>$row['Type'],
'Null'=>$row['Null'],
'Default'=>$row['Default'],
'Extra'=>$row['Extra'],
);
}
}
$index = array();
$query = "SELECT * FROM information_schema.statistics
WHERE TABLE_SCHEMA = '{$dbname}';
";
$result = mysql_query($query) or die("ERROR ONE:".mysql_error());
while($row = mysql_fetch_array($result)){
$index[$row['TABLE_NAME']][] = array('INDEX_NAME'=>$row['INDEX_NAME'],
'COLUMN_NAME'=>$row['COLUMN_NAME'],
'INDEX_TYPE'=>$row['INDEX_TYPE'],
'INDEX_NAME'=>$row['INDEX_NAME'],
'SEQ_IN_INDEX'=>$row['SEQ_IN_INDEX'],
);
}
//echo "<pre>";print_r($index);
//exit;
//TO GET THE ARRAY VARIABLE
echo "<pre>
<?php
$clm = Array (";
foreach ($cols as $key=>$tbl){
echo "
$key => Array (";
foreach($tbl as $col){
echo "
Array ( ";
foreach($col as $k=>$val){
echo "
'$k' => \"$val\",";
}
echo "
),";
}
echo "
),";
}
echo "
);";
echo "</pre>";
echo "<pre>
$inds = Array (";
foreach ($index as $key=>$tbl){
echo "
$key => Array (";
foreach($tbl as $col){
echo "
Array ( ";
foreach($col as $k=>$val){
echo "
'$k' => \"$val\",";
}
echo "
),";
}
echo "
),";
}
echo "
);
?>";
echo "</pre>";
Paste the result to this in a php file (called currentDB.php).
Then in another file is where the creation happens with the file you created:
define('BY_COL', 'column');
define('BY_IND', 'index');
$allTables = Array
(
//put all table names in this array
);
foreach($allTables as $tbl){
define($tbl, $tbl);
}
include_once 'currentDB.php';
$query = "SHOW TABLES IN $dbname";
$tables = array();
$result = mysql_query($query) or die("ERROR ONE:".mysql_error());
while($row = mysql_fetch_array($result)){
$tables[] = $row["Tables_in_$dbname"];
}
$checkTables = checkTables($tables);
echo "THE FOLLOWING TABLES <b>ARE</b> IN THE DB: <br />
<pre>";print_r(array_diff($allTables,$checkTables));echo "</pre><br />";
if($checkTables){
echo "THE FOLLOWING TABLES <b>ARE NOT</b> IN THE DB: <br />".
// "<pre>";print_r($checkTables);echo "</pre><br />";
"";
createTables($checkTables);
$query = "SHOW TABLES IN $dbname";
$tables = array();
$result = mysql_query($query) or die("ERROR ONE:".mysql_error());
while($row = mysql_fetch_array($result)){
$tables[] = $row["Tables_in_$dbname"];
}
}
//TO GET ARRAY FOR TABLE DISPLAY:
$cols = array();
foreach($tables as $tbl){
// echo "<br/>".
$query = "SHOW COLUMNS FROM $tbl";
$cols[$tbl] = array();
$result = mysql_query($query) or die("ERROR ONE:".mysql_error());
while($row = mysql_fetch_array($result)){
$cols[$tbl][] = array('Field'=>$row['Field'],
'Type'=>$row['Type'],
'Null'=>$row['Null'],
'Default'=>$row['Default'],
'Extra'=>$row['Extra'],
);
}
}
$checkTables = checkCols($cols);
if($checkTables){
echo "THE FOLLOWING COLS <b>ARE DIFFERENT</b> IN THE DB: <br />".
// "<pre>";print_r($checkTables);echo "</pre><br />".
"";
alterTable($checkTables);
}
$index = array();
$query = "SELECT * FROM information_schema.statistics
WHERE TABLE_SCHEMA = '$dbname';
";
$result = mysql_query($query) or die("ERROR ONE:".mysql_error());
while($row = mysql_fetch_array($result)){
$index[$row['TABLE_NAME']][] = array('INDEX_NAME'=>$row['INDEX_NAME'],
'COLUMN_NAME'=>$row['COLUMN_NAME'],
'INDEX_TYPE'=>$row['INDEX_TYPE'],
'INDEX_NAME'=>$row['INDEX_NAME'],
'SEQ_IN_INDEX'=>$row['SEQ_IN_INDEX'],
);
}
$checkTables = checkIndexes($index);
if($checkTables){
echo "THE FOLLOWING INDEXES <b>ARE DIFFERENT</b> IN THE DB: <br />".
// "<pre>";print_r($checkTables);echo "</pre><br />".
"";
alterTable($checkTables,BY_IND);
}
//echo "<pre>";print_r($indexes);echo "</pre><br />";
function checkTables($array){
$tbls = $GLOBALS['allTables'];
$diff = array_diff($tbls,$array);
if($diff){
return $diff;
}
return array();
}
function checkCols($array){
$cols = $GLOBALS['columns'];
$diff = array_diff_no_cast($cols,$array);
if($diff){
// echo "HI<br />";
return $diff;
}
return array();
}
function checkIndexes($array){
$ind = $GLOBALS['indexes'];
$diff = array_diff_no_cast($ind,$array);
if($diff){
// echo "HI<br />";
return $diff;
}
return array();
}
function createTables($tables){
$cols = $GLOBALS['columns'];
$ind = $GLOBALS['indexes'];
foreach($tables as $t){
$thisCols = (isset($cols[$t])?$cols[$t]:array());
$thisInd = (isset($ind[$t])?fromIndex($ind[$t]):array());
$create = "CREATE TABLE `$t` (\n";
foreach($thisCols as $k=>$c){
// echo "<pre>$k\n{$c['Default']}</pre>";
if($c['Default']=='CURRENT_TIMESTAMP'){
// echo "IN HERE";
$c['Extra'] = " ON UPDATE CURRENT_TIMESTAMP";
}
$create .= "`{$c['Field']}` {$c['Type']} ".
(($c['Null']=='NO')?'NOT NULL':'')." ".
((strlen($c['Default'])>0)?"DEFAULT ".
(is_quoted($c['Default'])?"'{$c['Default']}'":"{$c['Default']}"):'').
"{$c['Extra']}";
if(count($thisCols)!==($k+1)){
$create .= ",\n";
}
else
$create .= "\n";
}
$i = 0;
foreach($thisInd as $k=>$c){
if($i == 0){
$create .= ",\n";
}
if($c['INDEX_NAME']=='PRIMARY'){
$create .= "PRIMARY ";
}
else{
$iName = explode("_",$c['INDEX_NAME']);
if(array_search("UNIQUE",$iName)){
$create .= "UNIQUE ";
}
}
$create .= "KEY ".
(($c['INDEX_NAME']=='PRIMARY')?'':"`{$c['INDEX_NAME']}`")." ({$c['COLUMN_NAME']})";
if(count($thisInd)!==($i+1)){
$create .= ",\n";
}
else
$create .= "\n";
// echo "<pre>";print_r($c);echo "</pre>";
$i++;
}
$create .= ");";
// echo "<pre>$create</pre>";
mysql_query($create) or die("ERROR CREATE:".mysql_error());
echo "CREATED $t<br />";
}
// die;
}
function fromIndex($ind){
$return = array();
foreach($ind as $i){
$return[$i['INDEX_NAME']]['INDEX_NAME'] = $i['INDEX_NAME'];
// echo $i['COLUMN_NAME']." -- <br/>".
$return[$i['INDEX_NAME']]['COLUMN_NAME'] = (isset($return[$i['INDEX_NAME']]['COLUMN_NAME'])?"{$return[$i['INDEX_NAME']]['COLUMN_NAME']}, `{$i['COLUMN_NAME']}`":"`{$i['COLUMN_NAME']}`");
}
// echo "<pre>";print_r($return);echo "</pre>";
// die;
return $return;
}
function alterTable($table, $type = BY_COL){
// echo "<u>";
switch ($type){
case BY_COL:
// echo BY_COL;
$tbls = $GLOBALS['cols'];
$realTbls = $GLOBALS['columns'];
// echo "<pre>";print_r($table);echo"</pre>";
// die;
foreach($table as $k=>$t){
// echo
// $query = "SHOW COLUMNS FROM $k";
// echo "<br />";
foreach($t as $ky=>$col){
// echo
if($ky == 0){
$after = 'FIRST';
}
else {
$after = "AFTER `{$realTbls[$k][$ky-1]['Field']}`";
}
$primary = false;
if($col['Default']=='CURRENT_TIMETAMP'){
$col['Extra'] .= " ON UPDATE CURRENT_TIMESTAMP";
}
if($col['Extra'] == 'auto_increment'){
$query2 = "ALTER TABLE `$k` ADD PRIMARY KEY ( `{$col['Field']}` )";
$query3 = "ALTER TABLE `$k` CHANGE COLUMN `{$col['Field']}`
`{$col['Field']}` {$col['Type']} ".($col['Null']=='YES'?'NULL':'NOT NULL').
((!empty($col['Default']))? ' DEFAULT '.(is_quoted($col['Default'])?"'{$col['Default']}'":$col['Default']):'').
" {$col['Extra']}".
" $after;";
$primary = true;
$col['Extra'] = "";
}
// echo
$query = "ALTER TABLE `$k` ".(field_in_array($tbls[$k],$col['Field'])?"CHANGE COLUMN `{$col['Field']}`":"ADD COLUMN").
" `{$col['Field']}` {$col['Type']} ".($col['Null']=='YES'?'NULL':'NOT NULL').
((!empty($col['Default']))? ' DEFAULT '.(is_quoted($col['Default'])?"'{$col['Default']}'":$col['Default']):'').
" {$col['Extra']}".
" $after;";
// echo "<br/>";
mysql_query($query) or die("ERROR CREATE: $query".mysql_error());
if($primary){
mysql_query($query2) or die("ERROR CREATE: $query2".mysql_error());
mysql_query($query3) or die("ERROR CREATE: $query3".mysql_error());
}
echo "ADDED $k: {$col['Field']}";
echo "<br />";
}
// if($k == 'sessions'){
// echo "<pre>$ky:\n";print_r($tbls[$k]);die;
// }
}
break;
case BY_IND:
// echo BY_IND;
$tbls = $GLOBALS['index'];
foreach($table as $k=>$t){
$addTbls= fromIndex($table[$k]);
$thisInd = (isset($tbls[$k])?fromIndex($tbls[$k]):array());
// echo "<pre>$k:\n";print_r($addTbls);
foreach($addTbls as $added){
$beg = "INDEX";
if($added['INDEX_NAME']=='PRIMARY'){
$beg = "PRIMARY KEY";
$added['INDEX_NAME'] = '';
}
else{
$iName = explode("_",$added['INDEX_NAME']);
if(array_search("UNIQUE",$iName)){
$beg = "UNIQUE ".$beg;
}
}
// echo
$query = "ALTER TABLE `$k` ".(field_in_array($thisInd,$added['INDEX_NAME'],'INDEX_NAME')?"DROP INDEX `{$added['INDEX_NAME']}`, ":'')."ADD $beg `{$added['INDEX_NAME']}` ({$added['COLUMN_NAME']})";
mysql_query($query) or die("ERROR CREATE:".mysql_error());
echo "ADDED $k: {$added['INDEX_NAME']}";
echo "<br />";
}
}
// die;
break;
}
// echo "</u><br />";
}
function is_quoted($str){
if(is_numeric($str))
return false;
if($str == 'CURRENT_TIMESTAMP')
return false;
return true;
}
function field_in_array($arr, $field, $type = 'Field'){
foreach($arr as $val){
// echo "HERE: $field, $type";
// print_r($val);echo "<br/>";
if($val[$type]==$field){
// echo "HI";
return true;
}
}
return false;
}
##################################
# FUNCTION - multidim diff #
##################################
function array_diff_no_cast(&$ar1, &$ar2) {
$diff = Array();
foreach ($ar1 as $key => $val1) {
foreach($val1 as $k=>$val2){
if (!isset($ar2[$key]) || array_search($val2, $ar2[$key]) === false) {
$diff[$key][$k] = $val2;
}
}
}
return $diff;
}
You can export your database with Mysqldump. The web page has all the details on how to use it.
If you want the SQL to create the table, you can use:
SHOW CREATE TABLE tblname
If you have data, foreign keys, stored procedures and views in your database then the MySQL Workbench can forward reverse all that for you.
For MySQL and others, you might want to try the DESCRIBE TABLE.
You might want to look into the mysqldump utility. It will create a copy of your database in SQL format. (Note to avoid a problem I ran into: Be sure to run it with --routines if you want to also capture your stored functions and procedures!)
A typical command would look something like this:
mysqldump --routines -Q --opt -p -u username databasename >savefile.sql
Also, for large databases, these files can get quite large. You might also want to consider gzipping them or otherwise compressing them on the fly, using something like:
mysqldump --routines -Q --opt -p -u username databasename | gzip >savefile.sql.gz
use phpMyAdmin u can export your structure to XML,SQL,CSV and many other by using export option