I have an multidimensional array that follows certain pattern but 'x' element is always different?
This is a pattern:
$category['children'][x]['alias']
How to bypass 'x' and get that values?
4 Answers
You can also extract all of the alias columns if that is the only one you are concerned with:
$aliases = array_column($category['children'], 'alias');
If you just want the first one:
$alias = reset($category['children'])['alias'];
4 Comments
gview
I like your answer, however, using reset makes an assumption that isn't necessarily true. It will only work if the first element of $category['children'] is an array with an 'alias' element. We don't know whether that is true given the question. Also array_column was introduced in php 5.5, so it's relatively new.
AbraCadaver
Yes we must assume when the question doesn't stipulate much, but as for 5.5, it's 4 years old and support ended 1 year ago.
gview
Good point on 5.5. Personally, I think your answer is the best one provided, and works even if the array won't work with the reset() based solution.
be well
Sorry for not providing enough information about what I wanted, yet you still managed to figure it out, Thanks, your post answers my question.
$children = $category['children'];
$x = array_pop($children);
$theValue = $children['alias'];
This assumes a few things, you have not provided in your question.
1 Comment
gview
Works, but only if every element in $category['children'] is an array with an 'aiias' key in it. We don't know from the question unfortunately.
You can get all keys of an array using array_keys
$current = array_keys($category['children']);
$value = $category["children"][$current[0]]["alias"];
This code will get the value of index alias in the first item in the sub array "children".
1 Comment
gview
You have the same flaw as several other solutions, in that this doesn't work if the first element of the $category['children'] array, doesn't have an 'alias' key member.
If you want to get all the 'alias' values for all x's, then you can just loop through them:
$alias = new array();
foreach($category['children'] as $x) {
$alias[] = $x['alias'];
}
foreach($category['children'] as $x) { foreach($x as $alias) { //code here using $alias; }}? Loops through eachxto get its values? Not sure the full context or usage