What does this code do php?

What does this code do? What is the error?

$month = "February";

$arResult = [
"123" => [
"ID" => 123
"NAME" => "Shirt",
"CODE" => "rd123",
"DETAIL_TEXT" => "Red shirt in the box,"
"PREVIEW_PICTURE" => 4432
],
"124" => [
"ID" => 124
"NAME" => "Jacket",
"CODE" => "rd124",
"DETAIL_TEXT" => "Warm jacket",
"PREVIEW_PICTURE" => 2235
],
"125" => [
"ID" => 125
"NAME" => "Shorts",
"CODE" => "rd125",
"DETAIL_TEXT" => "Summer shorts, well suited for beach season",
"PREVIEW_PICTURE" => 1743
],
"126" => [
"ID" => 126
"NAME" => "T",
"CODE" => "rd126",
"DETAIL_TEXT" => "Hawaiian shirt",
"PREVIEW_PICTURE" => 1009
]
];

foreach($arResult as $element){
 $res = 0;
switch($month){
 case "January": if(strpos($element["NAME"], "shirt") > 0) $res = $element["ID"]; break;
 case "June": if(strpos($element["NAME"], "shirt") > 0) $res = $element["ID"]; break;
 case "September": if(strpos($element["NAME"], "shore") > 0) $res = $element["ID"]; break;
}
}

if($res > 0){
 echo "<div><h1>{$arResult[$res]['NAME']}</h1><p>{$arResult[$res]['DETAIL_TEXT']}</p></div>";
}
March 23rd 20 at 19:45
2 answers
March 23rd 20 at 19:47
Solution
Displays the product depending on the month. The mistake is that you do not have the conditions for February:
$month = "February";
...
switch($month){
case "January": if(strpos($element["NAME"], "shirt") > 0) $res = $element["ID"]; break;
case "June": if(strpos($element["NAME"], "shirt") > 0) $res = $element["ID"]; break;
case "September": if(strpos($element["NAME"], "shore") > 0) $res = $element["ID"]; break;
}
March 23rd 20 at 19:49
Solution
Iterates through all the elements of the array $arResult, and displays the name/description of item $arResult, if $month is equal to January, June or September", and the name contains "shirt", "shirt" or "shore".
Not running, because among the options "January", "June" and "September" with "February".
And yet, instead of strpos() is better to use stripos () and >= 0 instead of > 0

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