in_array() is not working while calling php script in Yii2 - php

Question

I have called core php function from controller of Yii2 in that in_array() function is not working but I have called individually then it is working.
following is my array which I have passed searchForId().
Array
(
[1] => Array
(
[2] => PRICE:
)
[4] => Array
(
[1] => S/NO
[3] => INSULATED TANK SIZE
[7] => QTY
[8] => U.PRICE(Qr.)
[10] => TOTAL PRICE (Qr.)
)
[5] => Array
(
[1] => 01
[3] => FZ 198(S) (11 x 6 x 3MH)
w/p (3+3)
[7] => 1 SET
[8] => 390,197.00
[10] => 390,197.00
)
[6] => Array
(
[1] => 02
[3] => FZ 36(S) (2 x 6 x 3MH)
w/p (3+3)
[7] => 1 SET
[8] => 121,232.00
[10] => 121,232.00
)
[7] => Array
(
[8] => Total in QAR
[10] => 511,429.00
)
)
this type of array I have got from excel sheet which I have read.
and my function is:
public function searchForId($array) {
foreach ($array as $key => $val) {
if (in_array('S/NO', $val)) {
return $key;
}
}
return null;
}
where I am doing wrong please help me.Thank You in advance!!

Answer 1

It seems to me you just need to do:
<?php
$array = [
"S/NO",
"INSULATED TANK SIZE",
"QTY",
"U.PRICE(Qr.)",
"TOTAL PRICE (Qr.)"
];
public function searchForId($array) {
$key = array_search('S/NO', $array);
return $key;
}
var_dump(searchForId($array));
Results here.
array_search() returns you the key already, or false if value is not found. Using in_array you won't directly get the key, if that's your aim. You could check if the return value is false|null at the place you call this function. I would do return $key ?? null(php 7+)
UPDATE
Here's how you can do with the last array you have given. Also see here.
public function searchForId($array) {
foreach($array as $k => $sub){
$key = array_search('S/NO', $sub);
if($key !== false){
return $key;
} else {
continue;
}
}
return null;
}
var_dump(searchForId($array));
Since the $key is int(0), and in all other cases you get bool(false) from array_search, you should check whether the $key is literally false and if so, continue to the next array :-)

Answer 2

Change your if statement as
if (in_array('S/NO', $val)) {
Well, the most reliable would to use array_search which would eliminate your whole function -
$key = array_search('S/NO', $array); //will return 1 for S/No and 7 for QTY.
Write array search inside your searchForId() function or try by trimming the values of array like shown above.