Category: arrays

Filter Array of Objects by Value: 5 PHP Code Examples in 2023

filter array of objects by value in PHP
How to Filter PHP arrays Before we get to the more complicated scenario of filtering arrays of objects by value, let's show how to do a PHP array filter in general. This is pretty simple to do using the array_filter function. You pass in the original array as the first parameter and then a function as the second parameter. The array_filter function uses the passed function on each element in the array to determine whether it should get returned. Anything returned truthy (not null or false) will get pushed into the new filtered array. Check out the example below to quickly filter an array in PHP by value. PHP array_filter Code Example // Let's setup a scenario where we need to filter an array by values with cows. $sampleArray = [0 => "horse", 1 => "cow", 2 => "pig", 3 => "cow"]; $filteredArray = array_filter( $sampleArray, function($val){ return $val ===…

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Remove Element from PHP Array: 5+ Easy Code Examples (2023)

remove element from associative array in PHP
How to remove an Element from a PHP Array PHP offers several functions to help remove an element from a PHP array: unset, array_pop, array_unshift, and array_splice are the most popular. The array_splice function is the most versatile, and unset can remove an element from anywhere. Use the array_pop & array_unshift functions to remove from the arrays' beginning or end. Check out the remainder of the article to see real-world code examples. Article Highlights array_splice is the most versatile option to remove elements from arrays unset can remove elements from anywhere in PHP arrays array_pop is a good option to remove elements from end of arrays array_shift can be used to remove elements from the beginning of arrays Remove Elements from Arrays PHP Code Example Here's a featured snippet of how to remove elements from an associative array in PHP. $employees_array = array( "Employee#1" => "Bob", "Employee#2" => "Stacie", "Employee#3"…

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How to print an array in PHP

print an array in PHP
Printing expressions is often done in PHP using echo. However, to print an array in PHP, we look for other options because echo directly doesn’t work with arrays and throws array to string conversion error instead. In this article, we will explore options to print an array in PHP. We’ll also see a way to print an array with echo as well. So, let’s jump straight to the topic. Option 1 - Print an array in PHP using a foreach loop Arrays are iterable and could be looped over. There are multiple ways to loop over an array in PHP, as one of our articles explains in detail. However, the point here is to print an array, and we’ll do so using a foreach loop. With the foreach loop, we have an edge to customize the output the way we like. We have a customized output that says, “My name…

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How to Check if an Array is Empty in PHP

check if an array is empty in PHP
How to Check if an Array is Empty in PHP Code Snippet This article explores how to check whether an array is empty in PHP. Here's one way PHP checks empty array. //An empty array $arr_1 = []; //Returns true if there are no elements in the array. if(count($arr_1) === 0) { echo "Array is empty"; } else { echo "Array is not empty"; } /*OUTPUT Array is empty */ That's just one way to check if array is empty in PHP. The article features more than that along with a case study. So, keep reading if you want to learn more. Context: Empty Array PHP and Edge Cases A robust code handles edge cases and error conditions without crashing or providing unexpected outcomes. A good developer will always make sure to use relevant techniques and utilities to write robust code. In a similar context, it is often necessary to…

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