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phparraysassociative-array

Convert a flat indexed array of alternating keys and values into a flat associative array

I have an array something like this:

[0] => english
[1] => 85
[2] => mathematics
[3] => 75
[4] => science
[5] => 71
[6] => social
[7] => 92

I want all values with even indexes to go as keys and all values odd indexes to go values. Like this:

[english] => 85,
[mathematics] => 75
[science] => 71
[social] => 92

Is there any good function to achieve this? or can you help me with the code?

Solution

  • A simple loop will do this:

    $input = array(
  'english',
  85,
  'mathematics',
  75,
  'science',
  71,
  'social',
  92,
);
$output = array();
for ($i=0; $i<count($input); $i+=2) {
  $output[$input[$i]] = $input[$i+1];
}
print_r($output);

    Note: the above code assumes there are an even number of elements.