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Undefined offset error in for loop


Undefined offset error in for loop

By : Clark James Evangeli
Date : November 22 2020, 02:59 PM
Hope this helps It looks like you're trying to get the lowest value in an array of values, so I've changed your GetMin() function to work with the non-consecutively indexed array that you create prior to calling GetMin(). This should work for you:
code :
<?php
function GetMin($s){
    $min = NULL;
    foreach($s as $v){
        if(is_null($min)){
            $min = $v;
        } elseif($v < $min){
            $min = $v;
        }
    }
    return $min;
}
$enc = ".129.25.24.154.546.214.142.254.256";
$ar = explode(".",$enc);
$ar_count = count($ar);
for($i=0;$i<$ar_count-1;$i+=3)
{
    $s[$i+1]=$ar[$i+1]+$ar[$i+2]+$ar[$i+3];
    echo $s[$i+1]."<br>";
}


echo GetMin($s);


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PHP for loop error Undefined offset

PHP for loop error Undefined offset


By : Leo Teng
Date : March 29 2020, 07:55 AM
it fixes the issue I have the code below which loops through selected checkboxes and executes and sql statement.
code :
if (isset($_POST['delete']))
{
   for($i=0;$i<$recordcount;$i++)                       
   {                        
       $deleteid = isset($_POST['checkbox'][$i]);
       if ($deleteid) {
          $sqldelete = "DELETE FROM customer WHERE cus_ID = ".$_POST['checkbox'][$i];
          echo $sqldelete."<br />"; //Error checking
          $deleters = $conn->Execute($sqldelete);                  
       }
   }
}
php undefined offset 150 error in for loop

php undefined offset 150 error in for loop


By : Cristian Barbaro
Date : March 29 2020, 07:55 AM
this will help I keep getting an undefined offset 150 error, but i am not sure what it means or what i should do to debug it. Do to the error line i believe that it has something to do with my for loop. , Change your for loop:
code :
for ($i = 0;$i < count($ColHeads);$i++) {
Undefined offset error in PHP loop

Undefined offset error in PHP loop


By : Andres
Date : March 29 2020, 07:55 AM
seems to work fine It happens, because after explode you have array only with [0] key probably, that means you have no ; in your $t in previous line and whole $t goes into first $section assignment.
Never assume you will always have exactly the data you have during code developing. You're setting traps for yourselves. I would suggest solution close to following:
code :
$section = explode(';', $t);
$section = explode('.', count($section) > 1 ? $section[1] : $section[0]);
$section = explode(';', $t);
if(count($section) === 0) {
    // debug code, warnings, reports, Exceptions etc.
} else {

}
Getting Undefined offset: 2 error on foreach loop

Getting Undefined offset: 2 error on foreach loop


By : Ethan estrada
Date : March 29 2020, 07:55 AM
hope this fix your issue Typically, the Undefined offset message would be triggered by trying to access an array key which doesn't exist.
It seems that your code example might not actually be showing the part that triggered the error... In your case, I would expect the code to show something like $var[2], where the array does not actually contain an index of 2.
For loop undefined offset error in Laravel query

For loop undefined offset error in Laravel query


By : Ahdai
Date : March 29 2020, 07:55 AM
will be helpful for those in need Looking at this $ProductSubCategory is not an array or does not have the index of 1. Depending on the contents of $ProductSubCategory there are a few approaches you can use.
Solution 1: $ProductSubCategory is an array of strings
code :
$Product = Product::select('id','ProductWorkpiece','ProductCategory','ProductName','ProductImage','ProductSubCategory')
    ->where('Status','=','1')
    ->whereIn('ProductSubCategory', $ProductSubCategory)
    ->get();
$Product = Product::select('id','ProductWorkpiece','ProductCategory','ProductName','ProductImage','ProductSubCategory')
    ->where('Status','=','1')
    ->where(function ($query) use ($ProductSubCategory) {
        foreach($ProductSubCategory as $subcategory) {
            $query->orWhere('ProductSubCategory', '=', $subcategory->name);
        }
    })->get();
$subCategories = $ProductSubCategory->only('name')->toArray();
$Product = Product::select('id','ProductWorkpiece','ProductCategory','ProductName','ProductImage','ProductSubCategory')
        ->where('Status','=','1')
        ->whereIn('ProductSubCategory', $subCategories)
        ->get();
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