Question

i have come to this strange issue.

i am getting values from array and trying to compare it but its not working.

Code-1

<?php
echo $data->item[0]['promocode'].'<br>';
echo $data->item[1]['promocode']; 
?>

Output-1

inhouse
inhouse 

---

Now lets try with if else condition if both values are same or not
Code-2

<?php
if(($data->item[0]['promocode']) == ($data->item[1]['promocode'])){
echo "both values are same";
} else {
echo "both values are NOT same";
}?>

Output-2

both values are NOT same 

Very strange

i dont get it what i am doing wrong.

lets try above exaple with specifying variables
Code-3

<?php
$data0=$data->item[0]['promocode'];
$data1=$data->item[1]['promocode'];
if($data0 == $data1){
echo "both values are same";
} else {
echo "both values are NOT same";
}?>

Output-3

both values are NOT same 

I am pulling my hairs now.

---

Now hard coding values in variables

Code-4

<?
$data0='inhouse';
$data1='inhouse';
if($data0 == $data1){
echo "both values are same";
} else {
echo "both values are NOT same";
}?>

Output-4

both values are same 

---

So my question is why is this happening ?

i have array of elements and i wanna check previous value with the current value if try then do something.

thanks for your time.

Answer 1

Assuming both entries are strings (as shown in your first code example) my guess would be that your entries have unequal leading and / or trailing whitespace. Try normalising them first, eg

if (trim($data->item[0]['promocode']) == trim($data->item[1]['promocode']))

To see what’s going on, try modifying your first example to

<?php
    printf('<pre>"%s"%s"%s"</pre>',
        $data->item[0]['promocode'],
        PHP_EOL,
        $data->item[1]['promocode']);
?>