Illegal Offset Type? - php

Question

$images = valley_images();
var_dump($images);
$sorted_data = array();
foreach($images as $key => $value) {
if ($key == 'timestamp') {
$sorted_data[$value][] = $images;
}
}
ksort($sorted_data);
The error is appearing on this line:
$sorted_data[$value][] = $images;
When I do the var dump of images I receive this:
array(2) {
[0]=> array(2) {
["id"]=> string(2) "17" ["timestamp"]=> string(10) "1359797773"
}
[1]=> array(2) {
["id"]=> string(2) "20" ["timestamp"]=> string(10) "1359934365"
}

Answer 1

A nice way to do sorting of a key on a multi-dimensional array without having to know what keys you have in the array first:
<?php
$people = array(
array("name"=>"Bob","age"=>8,"colour"=>"red"),
array("name"=>"Greg","age"=>12,"colour"=>"blue"),
array("name"=>"Andy","age"=>5,"colour"=>"purple"));
var_dump($people);
$sortArray = array();
foreach($people as $person){
foreach($person as $key=>$value){
if(!isset($sortArray[$key])){
$sortArray[$key] = array();
}
$sortArray[$key][] = $value;
}
}
$orderby = "name"; //change this to whatever key you want from the array
array_multisort($sortArray[$orderby],SORT_DESC,$people);
var_dump($people);