I have an array which holds around 5000 array elements, each in the following format:
Array
(
[keywordid] => 98
[keyword] => sample keyword 34
[type] => NATURAL
[longname] => UK
)
I have a second array which holds numerical values such as the following:
Array
(
[0] => 55
[1] => 56
[2] => 57
[3] => 58
[4] => 59
[5] => 1065
[6] => 1066
[7] => 1067
[8] => 1083
)
Each value in the array above corresponds to the 'keywordid' value within each array of the first array. I want to sort the first array, so that those arrays whose keywordid has a value matching an element in the second array, appear first and the rest of the arrays appear afterwards in no specified order. How do I accomplish this? I am using PHP 5.3, backwards compatibility is not a requirement.
Appreciate the help.
I would probably use usort
usort($array1, function($a, $b) use($array2) {
$k1 = array_search($a['keywordid'], $array2);
$k2 = array_search($b['keywordid'], $array2);
if ($k1 == $k2) {
return 0;
}
return ($k1 < $k2) ? -1 : 1;
});
There is probably a better way but that came to mind first.
try this code to manipulate that array:
<?php
//here I assume you have more than one array
$array = array (
0=> array (
"keywordid" => 98,
"keyword" => "sample keyword 34",
"type" => "NATURAL",
"longname" => "UK"),
1=> array (
"keywordid" => 95,
"keyword" => "sample keyword 95",
"type" => "NATURAL 02",
"longname" => "US"),
2=> array (
"keywordid" => 55,
"keyword" => "sample keyword 55",
"type" => "NATURAL 02",
"longname" => "AU")
);
//populate array into new variable
foreach ( $array as $key=> $val){
$out[] = $val["keywordid"];
}
echo "<pre>";
print_r($out);
echo "</pre>";
?>
the Output is:
Array
(
[0] => 98
[1] => 95
[2] => 55
)