Combining array elements with " mark at both ends - php

Question

I need to combine two or more array elements enclosed inside a double quotation mark...
Example:
- Before -
[
"Foo1",
"\"Foo2",
"Foo3",
"Foo4\"",
"Foo5"
]
-After -
[
"Foo1",
"\"Foo2 Foo3 Foo4\"",
"Foo5"
]

Answer 1

Below, $source and $result are the source and result respectively. I would use array_reduce()
$result = array_reduce($source, function($acc,$i) {
static $append = false; // static so value is remembered between iterations
if($append) $acc[count($acc)-1] .= " $i"; // Append to the last element
else $acc[] = $i; // Add a new element
// Set $append=true if item starts with ", $append=false if item ends with "
if(strpos($i,'"') === 0) $append = true;
elseif (strpos($i,'"') === strlen($i)-1) $append = false;
return $acc; // Value to be inserted as the $acc param in next iteration
}, []);
Live demo

Answer 2

function combine_inside_quotation($array)
{
if(!is_array($array) || 0 === ($array_lenght = count($array))) {
return [];
}
$i = 0;
$j = 0;
$output = [];
$inside_quote = false;
while($i < $array_lenght) {
if (false === $inside_quote && '"' === $array[$i][0]) {
$inside_quote = true;
$output[$j] = $array[$i];
}else if (true === $inside_quote && '"' === $array[$i][strlen($array[$i]) - 1]) {
$inside_quote = false;
$output[$j] .= ' ' . $array[$i];
$j++;
}else if (true === $inside_quote && '"' !== $array[$i][0] && '"' !== $array[$i][strlen($array[$i]) - 1]) {
$output[$j] .= ' ' . $array[$i];
} else {
$inside_quote = false;
$output[$j] = $array[$i];
$j++;
}
$i++;
}
return $output;
}
Try this function it gives the output you mentioned.
Live Demo