Got this code which is troubling me and am eager to accept any help!
$x=0;
while($row = mysql_fetch_array($result))
{
if ($me == $x)
{
echo "You are $me";
break;
}
else
{
$x++;
}
}
When I include the break; it returns :
You have selected the 1
However, when I remove the break; it returns
You have selected the 1 You have selected the 1 You have selected the 1 You have selected the 1
There are currently 6 records in the database and if the code were to work it would display "You are 4th"
Any ideas?
Your $x++; only executes on else. In order to have it increment on every iteration you need to remove the else:
$x=0;
while($row = mysql_fetch_array($result))
{
if ($me == $x)
{
echo "You are $me";
break;
}
$x++;
}
Just a side note: $row doesn't seem to be related to $me and $x here. I'll assume your loop contains some other code that you've omitted, but this alone will probably answer your question.
You are icrementing $x in the else, this is never getting executed.
You need to do the increment in the same part as the echo.
So either:
$x=0;
while($row = mysql_fetch_array($result))
{
if ($me == $x)
{
echo "You are $me";
$x++;
}
else
{
$x++;
}
}
Or if you never need to increment $x without echoing:
$x=0;
while($row = mysql_fetch_array($result))
{
if ($me == $x)
{
echo "You are $me";
x++;
}
}
Related
Here is my Code
<?php
for ($x = 0; $x <= $n; $x++)
{
//Counting of rows
$countrow = get_rows($getvids);
if($offline == "Offline")
{
$apsys = "APSYS";
$offlined = "";
if ($getvids == $apsys || $getvids == $offlined )
{
echo "<tr>
<th>$x</th>
<th>$accntid[$x]</th>
<th>$fname[$x]</th>
<th>$lname[$x]</th>
<th>$vid[$x]</th>
<th>$vplatenum[$x]</th>
<th>$imei[$x]</th>
<th>$datas[1]</th>
<th>$datas[0]</th>
<th>$offline</th>";
echo "<th>$getvids</th>";
echo "<th><button type = 'button' class = 'btn btn-success viewbtn'> View Troubleshoot Report History</button></th>";
echo "</tr> ";
echo "total number of Rows:";
echo str_word_count($countrow);
}
else
{
}
}
else
{
}
}
?>
and here is my Function
<?php
function get_rows($getrowscount)
{
require ('db_connection.php');
$getrowscounts = $getrowscount;
//echo $getrowscounts;
return $getrowscounts;
}
//get_rows(); // call the function
?>
the table shows Two Rows with the value of = "APSYS"
I want to count the rows and show the output like this:
Total number of Rows: 2
but the output I can only get is like This:
Total number of Rows:1
Total number of Rows:1
Total number of Rows:0
can someone help me, I am a little bit confused about what will I use to count the rows?
Thanks.
How about this? Does this satifsfy your requirement?
<?php
$countrow = 0;
for ($x = 0; $x <= $n; $x++)
{
//Counting of rows
$countrow = $countrow + get_rows($getvids);
if($offline == "Offline")
{
//omitted
}
else
{
}
}
}
echo "total number of Rows:";
echo str_word_count($countrow);
?>
If you are trying to count them after fetching from the database, try to write a SQL query instead of your current approach.
How to execute php if condition once time only and didn't check it again, i put if condition in for loop and i want to check it one time only:
<?php
for($x=0;$x<3;$x++){
if($x == $x){
echo "";
}
else{
echo "hidden";
}
}
I need to execute first if one time only in for loop
I need to execute first if one time only in for loop. Well that's not how you do it, you need to compare with a variable and upon success just use break to come out of the loop. Something like:
<?php
$y = 0;
for($x=0; $x<3; $x++){
if($x === $y){
echo "X is Equal to Y";
break;
}
else {echo "hidden";}
}
echo "<br>". "You're outside the loop!";
?>
Set a flag, if flag is true don't execute if condition.
<?php
$flag = 0;
for($x=0;$x<3;$x++) {
if($x == $x && $flag == 0){
echo "";
$flag = 1;
}
else{
echo "hidden";
}
}
I'm printing out a table with 27 cols from a database, so its obvious that it'll be aesthetically displeasing if 27 cols were visible on my screen. so this is one of the conditions i've been using to see if a particular col is empty, if it is empty then the table header will not be printed and if that isnt printed another if isset condition will not print the table data. But it isn't working out as planned. These are the variations i've tried and none of them are working P.S. $result = number of rows being returned by the query.
$i = 1;
while ($i <= $result)
{
if (!empty($array['Others'][$i]))
{
$others = print "<th>Others</th>";
break;
}
$i++;
}
$i = 0;
while ($i <= $result)
{
$emptyothers = !empty($array['Others'][$i]);
if ($emptyothers == '1')
{
$others= print "<th>Others</th>";
break;
}
$i++;
}
Your code should be like this:
$sql = mysql_query("SELECT * FROM table");
if (mysql_num_rows($sql) > 0) {
//your code...
} else {
print 'is empty';
}
Could you use array_key_exists()?
foreach($row in $result) {
if(array_key_exists('Others', $row)) {
if(!empty($row['Others']) {
print "<th>Others</th>";
break;
}
}
}
When I launch my web page, increment doesn't work correctly!
It should go like this: $i = from 1 to x (0,1,2,3,4,5,6 etc..).
But instead it jumps over every step giving result of (1,3,5,7 etc..).
Why is this code doing this?
<ul class="about">
<?php
$result = mysql_query("SELECT * FROM info WHERE id = 1");
while ($row = mysql_fetch_assoc($result))
{
$bioText = $row['bio'];
}
$endBioTxt = explode("\n", $bioText);
for ($i=0; $i < count($endBioTxt);)
{
if (checkNum($i) == true)
{
echo "<li class='left'><div>".$endBioTxt[$i]."</div></li>";
echo $i;
}
else
{
echo "<li class='right'><div>".$endBioTxt[$i]."</div></li>";
echo $i;
}
$i++;
}
// Function to check if number is prime
function checkNum($num){
return ($num % 2) ? TRUE : FALSE;
}
?>
</ul>
Output:
Sometext!(right side)
0
1
Sometext2!(right side)
2
3
...
Please DONT do this as other suggested:
for ($i=0; $i < count($endBioTxt); $i++)
do this:
$count = count($endBioTxt);
for ($i=0; $i < $count; $i++) {
}
No need to calculate the count every iteration.
Nacereddine was correct though about the fact that you don't need to do:
$i++;
inside your loop since the preferred (correct?) syntax is doing it in your loop call.
EDIT
You code just looks 'strange' to me.
Why are you doing:
while ($row = mysql_fetch_assoc($result))
{
$bioText = $row['bio'];
}
???
That would just set $bioText with the last record (bio value) in the recordset.
EDIT 2
Also I don't think you really need a function to calculate the modulo of a number.
EDIT 3
If I understand your answer correctly you want 0 to be in the left li and 1 in the right li 2 in the left again and so on.
This should do it:
$endBioTxt = explode("\n", $bioText);
$i = 0;
foreach ($endBioTxt as $txt)
{
$class = 'left';
if ($i%2 == 1) {
$class = 'right';
}
echo '<li class="'.$class.'"><div>'.$txt.'</div></li>';
echo $i; // no idea why you want to do this since it would be invalid html
$i++;
}
Your for statement should be:
for ($i=0; $i < count($endBioTxt); $i++)
see http://us.php.net/manual/en/control-structures.for.php
$i++; You don't need this line inside a for loop, it's withing the for loop declaration that you should put it.
for ($i=0; $i < count($endBioTxt);$i++)
{
if (checkNum($i) == true)
{
echo "<li class='left'><div>".$endBioTxt[$i]."</div></li>";
echo $i;
}
else
{
echo "<li class='right'><div>".$endBioTxt[$i]."</div></li>";
echo $i;
}
//$i++; You don't need this line inside a for loop otherwise $i will be incremented twice
}
Edit: Unrelated but this isn't how you check whether a number is prime or not
// Function to check if number is prime
function checkNum($num){
return ($num % 2) ? TRUE : FALSE;
}
This code works, please test it in your environment and then uncomment/comment what you need.
<?php
// This is how query should look like, not big fan of PHP but as far as I remember...
/*
$result = mysql_query("SELECT * FROM info WHERE id = 1");
$row = mysql_fetch_assoc($result);
$bioText = $row['bio'];
$endBioTxt = explode("\n", $bioText);
*/
$endBioTxt[0] = "one";
$endBioTxt[1] = "two";
$endBioTxt[2] = "three";
$endBioTxt[3] = "four";
$endBioTxt[4] = "five";
$totalElements = count($endBioTxt);
for ($i = 0; $i < $totalElements; $i++)
{
if ($i % 2)
{
echo "<li class='left'><div>".$endBioTxt[$i]."</div></li>";
}
else
{
echo "<li class='right'><div>".$endBioTxt[$i]."</div></li>";
}
/*
// This is how you should test if all your array elements are set
if (isset($endBioTxt[$i]) == false)
{
echo "Array has some values that are not set...";
}
*/
}
Edit 1
Try using $endBioTxt = preg_split('/$\R?^/m', $bioTxt); instead of explode.
I have a xml file with 100 records, but I want it to limit it to just 5 records
for ($i=0;$i<=5;$i++) {
foreach($xml->entry as $result){
if ($result->updated == $result->published) {
}
}
}
When I put in the above code, it display one record 5 times.
Thanks
Jean
$count = 0;
foreach($xml->entry as $result)
{
if ($result->updated == $result->published) {
}
$count++;
if ($count++ == 5) break;
// if ($count++ == 5) break; think this might work aswell
}
It seems that the foreach loop runs only once, because there is only one entry, and the for loop prints it 5 times. If there were more than one, this code would print each entry 5 times. If $xml->entry is an array, you can do it like this:
for($i = 0; $i < 5; $i++) {
$result = $xml->entry[$i];
if($result->updated == $result->published) {
}
}
Check if there are more than one <entry> tags in your XML file.