Getting Single Value From Chunked Array - php

Question

In an array that is chunked into blocks of 11 values, I need to know if a particular one has a TRUE value. If only one is TRUE, that's all I need and the foreach can stop after it sets a value. All I could think of to do was to make it set a SESSION value to TRUE if a match but that does not stop the loop from continuing and then I had the issue of the SESSION giving false results unless it was then unset which I did after the value was set. Seems rather an indirect way to do it so any suggestions?
$FormValues = array_chunk($Fields, $NoValues); // Group together the field values
// Check if form uses multiple selection fields and add appropriate form tags
foreach ($FormValues as $multi) :
if (isset($multi[9]) === TRUE) $_SESSION['useMulti'] = TRUE;
endforeach;
$enableMulti = (isset($_SESSION['useMulti'])) ? " enctype=\"multipart/form-data\"" : "";
unset($_SESSION['useMulti']);
Here is an example of an array and, in this case, none should return TRUE:
$Fields = array("First Name","Title",$Title,1,0,30,"","","","","",
"Quote","Quote",$Quote,4,0,30,"","",$quoteSQL,FALSE,$siteDB,
"Location","Location",$Location,1,0,30,"","","","","",
"Date","EventDate",$EventDate,41,0,15,"",TRUE,"","","",
"Time","Time",$Time,39,0,0,"","",$sqlTime,"","",
);

Answer 1

You can simply iterate over the original array in strides of 11, rather than using array_chunk.
To make the loop stop iterating once you've found what you want, use break.
You don't need a session variable for this, they're only for preserving values between different PHP scripts. You don't really even need another variable, you can just set the enableMulti variable in the loop.
$enableMulti = "";
for ($i = 9; i < count($Fields); $i += $NoValues) {
if ($Fields[$i] === true) {
$enableMulti = " enctype=\"multipart/form-data\"";
break;
}
}
If you really want to use foreach you do need to use array_chunk, and you can also use array_column.
$enableMulti = "";
$chunks = array_chunk($Fields, $NoValues);
foreach (array_column($chunks, 9) as $value) {
if ($value === true) {
$enableMulti = " enctype=\"multipart/form-data\"";
break;
}
}
You can also get rid of the loop entirely:
if array_search(TRUE, array_column($chunks, 9)) {
$enableMulti = " enctype=\"multipart/form-data\"";
} else {
$enableMulti = "";
}