Getting Notice: Undefined offset: 25 in
C:\wamp\www\finalProjectDemo\search.php on line 32
I'm trying to read in from a file and search for a specific name and address within that for output. I know a database would be best. This is for a class assignment I'm giving out that's specifically set to work this way. I believe I almost have it all, but am just getting this problem. Fairly new to PHP.
I have this code:
<html>
<body>
<?php
// read lines into array
// search array for string
// get 7 lines from there.
$i = 0;
$fileName = "addresses.txt";
$readFile = fopen($fileName, 'r');
$readByLineArray = array();
// Get search string from submission
$searchFirstName = $_POST['searchFirstName'];
$searchLastName = $_POST['searchLastName'];
$searchFirstNameSuccess = 0;
$searchLastNameSuccess = 0;
while (!feof($readFile))
{
$readByLineArray[$i] = fgets($readFile);
//echo "$readByLineArray[$i] read from array position $i";
//echo "<br />";
$i++;
}
fclose($readFile);
$arrLength = count($readByLineArray);
$currentArrayPosition = 0;
for ($x=0;$x<=$arrLength;$x++){
if ($searchFirstName == $readByLineArray[$x])
{
$searchFirstNameSuccess = 1;
$x++;
if ($searchLastName == $readByLineArray[$x])
{
$searchLastNameSuccess = 1;
$currentArrayPosition = $x - 1;
} else {
$searchFirstNameSuccess = 0;
}
}
}
for ($y=0;$y<=7;$y++){
echo "$readByLineArray[$currentArrayPosition]<br />";
$currentArrayPosition++;
}
?>
</body>
</html>
Thanks for all your help!
Ben---
Try foreach :-
foreach ($readByLineArray as $temp){
if ($searchFirstName == $temp)
{
$searchFirstNameSuccess = 1;
$x++;
if ($searchLastName == $temp)
{
$searchLastNameSuccess = 1;
} else {
$searchFirstNameSuccess = 0;
}
}
}
Change your for loop like this..
for ($x=0;$x<$arrLength;$x++){ //<--- Should be < and not <=
Say if your array count is 3 , so the array elements keys are arranged as 0,1,2. When you put <= in the looping as condition , your code will check for an non-existent key with an index of 3 which will thrown an Undefined Offset notice.
EDIT :
The easier way....
<html>
<body>
<?php
$fileName = "addresses.txt";
// Get search string from submission
$searchFirstName = $_POST['searchFirstName'];
$searchLastName = $_POST['searchLastName'];
$searchFirstNameSuccess = 0;
$searchLastNameSuccess = 0;
foreach(file($fileName) as $recno=>$records)
{
if(stripos($records,$searchFirstName)!==false && stripos($records,$searchLastName)!==false)
{
$searchFirstNameSuccess = 1;
$searchLastNameSuccess = 1;
echo "Match Found at Position : $recno";
break;
}
}
?>
</body>
</html>
Related
I'm running a simple script which puts an integer through the formula of the Collatz conjecture and adds the output of each step into an array.
I want to use a function to detect if there's a cycle in the array, using Floyd's algorithm. And though I feel like I'm not doing a bad job, I don't seem to get it right. At this moment I'm getting the error Trying to get property 'next' of non-object in C:\xampp\htdocs\educom\week3\functions.php on line 12
See my code below. Any feedback is greatly appreciated!
include("functions.php");
$n = $_POST['number'];
$step = 0;
$reeks1 = array();
$cycle = 0;
echo "Your entry is: ". $n ."<br><br>";
while($n!==1 && $cycle==0){
$cycle = detect_cycle(array($reeks1));
if($n % 2 == 0){
$n = $n / 2;
array_push($reeks1, "$n");
$step++;
echo $step .": ". $n ."<br>";
}else{
$n = ($n * 3) + 1;
array_push($reeks1, "$n");
$step++;
echo $step .": ". $n ."<br>";
}
}
functions.php:
function detect_cycle($node){
if ($node==NULL){
return FALSE;
}
$turtle = $node;
$rabbit = $node->next;
while($rabbit != NULL){
if($rabbit === $turtle){
return TRUE;
}elseif($rabbit->next == NULL){
return FALSE;
}else{
$turtle = $turtle->next;
$rabbit = $rabbit->next->next;
}
}
return FALSE;
}
Check this out. IMPORTANT I don't know is this according to your theory. but it won't give you errors if you use like this.
function detect_cycle($node){
if ($node==NULL){
return FALSE;
}
$turtle = $node;
$rabbit = $node[0];
while($rabbit != NULL){
if($rabbit === $turtle){
return TRUE;
}elseif($rabbit[0] == NULL){
return FALSE;
}else{
$turtle = $turtle[0]; // use the number of the element key starting from 0
$rabbit = $rabbit[0][1];
}
}
return FALSE;
}
I got this Undefined Offset error from PHP, and I can't seem to see why. Can you guys help me out?
I'm pretty new to PHP, so I don't really understand what Undefined offset really is.
<?php
$wordlist = file('/tmp/all'); // 42M wordlist
$user = "admin";
$realm = "Miele Logic";
$nonce = "07ec2416ef0000009223000015000000";
$nc = "00000001";
$cnonce = "gdBxXVNT0y6npOpQ";
$qop = "auth";
$i = 0;
while($wordlist[$i]) {
$password = trim($wordlist[$i]);
$HA1 = md5("$user:$realm:$password");
$HA2 = md5("GET:/");
$response = md5("$HA1:$nonce:$nc:$cnonce:$qop:$HA2");
if($i % 100000 == 0) {
echo "$i\n"; // output $i at each 100k
}
if($response == '97b5e79866512f028266f34946117a2c') {
echo $password . "n";
break;
}
$i++;
}
?>
Change your code to:
$i = 0;
$count = count($wordlist);
while($i < $count) {
//rest of the code goes here
}
I have that code :
<?php
error_reporting(E_ALL);
ini_set('display_errors',1);
$wynik = 0;
$licznik = 0;
wykonaj();
function wykonaj()
{
echo '1';
for($i = 1; $i == 404; $i++)
{
$temp = $i / 100;
echo $temp;
if(is_int($temp*1.5))
{
global $wynik, $licznik;
$wynik++;
//$liczba[$licznik] = $i + ($i/100)*1.5;
$licznik++;
}
}
}
echo "Ilosc wynikow : $wynik<br/>Liczby sa nastepujace :";
?>
My application returns :
1Ilosc wynikow : 0
Liczby sa nastepujace :
So I think there is an error (logical ?), because that line - echo $temp; isn't displayed yet, but 1 before a loop is displayed. I tried a lot of things, but I could not find any solution. Why are my errors ? Compiler doesn't tell anything.
It will only enter the loop if $i is equal to 404, which it's set to 1 right off so that won't happen.
Syntax in a for loop is something like:
for([Set Vars]; [Set Conditional]; [Set Increment])
The loop only runs when the conditional is true.
Try this code. Mising <= in the for condition
<?php
error_reporting(E_ALL);
ini_set('display_errors',1);
$wynik = 0;
$licznik = 0;
wykonaj();
function wykonaj()
{
echo '1';
for($i = 1; $i <= 404; $i++)
{
$temp = $i / 100;
echo $temp;
if(is_int($temp*1.5))
{
global $wynik, $licznik;
$wynik++;
//$liczba[$licznik] = $i + ($i/100)*1.5;
$licznik++;
}
}
}
echo "Ilosc wynikow : $wynik<br/>Liczby sa nastepujace :";
?>
demo here
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', $bioTxt); instead of explode.
Controller
for ($x = 1; $x <= $numb; $x++)
{
echo $quanoutput = $this->input->post('quanoutput');
$barcodeoutput = $this->input->post('barcodeoutput');
$productsoutput = $this->input->post('productsoutput');
$outward_date=$this->input->post('outward_date');
$stock=$this->input->post('stock');
$warehouse_id =$this->input->post('warehouse_id');
$request_id =$this->input->post('request_id');
$warehouse=$this->input->post('warehouse');
$buyprice = $this->input->post('buyprice');
if ($productsoutput=='undefined'){
//$flag3 = $this->cartmodel->cartInsert($barcodeoutput,$quanoutput,$buyprice,$stock,$warehouse,$warehouse_id,$request_id,$outward_date);
} else {
$flag3 = $this->cartmodel->cartInsert($barcodeoutput,$quanoutput,$buyprice,$stock,$warehouse,$warehouse_id,$request_id,$outward_date);
}
}
Try starting your for loops at 0. (ie. j=0) and change the <= to just <.