array_filter on object arrays

Question

I have an array of objects. The objects have a is_valid method that has some internal logic and returns either a boolean.

Now I want to get all objects in the array that return true to is_valid. I can do it using a foreach loop.

But is there way to do it using array_filter in PHP without creating a new anonymous or callback function?

array_reduce will reduce your array to a single value you can use array_filter instead and pass your is_valid method to it — Amr Aly
– Amr Aly, Commented Apr 15, 2017 at 3:26
@AmrAly I got confused between array_reduce and array_filter. I was basically looking for a way to filter an array of objects without creating a callback function. — Sudar
– Sudar, Commented Apr 15, 2017 at 3:31
so you want built-in function to retrieve your array and return only the valid ones without any callbacks — Amr Aly
– Amr Aly, Commented Apr 15, 2017 at 3:32
@AmrAly Yes. Basically a built-in function without any callbacks. — Sudar
– Sudar, Commented Apr 15, 2017 at 3:41

maltere · Accepted Answer · 2017-04-15 10:23:05Z

4

You will not be able to achive this without an anonymous callback function, as bestprogrammerintheworld said

so if you'd still like to use array_filter, this may be your answer:

array_filter($array, function($entry) { return $entry->is_valid(); } );

answered Apr 15, 2017 at 10:23

maltere

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bestprogrammerintheworld · Accepted Answer · 2017-04-15 04:13:25Z

2

The answer is no? http://php.net/manual/en/function.array-filter.php

array_filter

(PHP 4 >= 4.0.6, PHP 5, PHP 7) array_filter — Filters elements of an array using a callback function

answered Apr 15, 2017 at 4:13

bestprogrammerintheworld

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Minwork · Accepted Answer · 2018-09-06 10:57:55Z

2

You can use this one liner:

 Arr::filterObjects($array, 'is_valid')

from this library

answered Sep 6, 2018 at 10:57

Minwork

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Toni · Accepted Answer · 2021-10-24 17:03:07Z

1

Use this:

$Filtered = array_filter($table, function ($item) {               
    return strpos($item->ItemCode,'PPC');
});

This returns an array of objects, that have ItemCode like PPC.

edited Oct 24, 2021 at 17:03

Toni

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answered Oct 23, 2021 at 4:43

Will Nguyen

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3 Comments

Tyler2P Over a year ago

As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.

K. Kilian Lindberg Over a year ago

I had a quicklook; strpos returns the position number of the occurrence of the string 'PPC'. This code needs to be explained, haven't looked into the logic if it even works.

Will Nguyen Over a year ago

Just copy some code from my project. In this case, the function function ($item) { return strpos($item->ItemCode,'PPC');} will return true for the position of array members that match condition.

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