ProgramGuruTo remove items from a set (which can be represented using an array) based on a condition in PHP, you can use the array_filter function.
In this example,
$numberArray with values $numberArray = [1, 2, 3, 4, 5];.array_filter function to filter out the even numbers from the array. This function takes the array and a callback function as arguments.%. If the number is odd, the callback function returns true, and the number is kept in the array.$filteredArray.<?php
$numberArray = [1, 2, 3, 4, 5];
echo "Original Array: ";
print_r($numberArray);
$filteredArray = array_filter($numberArray, function($number) {
return $number % 2 !== 0;
});
echo "Array after removing even numbers: ";
print_r($filteredArray);
?>Original Array: Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 5
)
Array after removing even numbers: Array
(
[0] => 1
[2] => 3
[4] => 5
)In this example,
$stringArray with values $stringArray = ["apple", "banana", "orange", "kiwi"];.array_filter function to filter out the strings longer than 4 characters from the array. This function takes the array and a callback function as arguments.strlen function. If the condition is true, the callback function returns true, and the string is kept in the array.$filteredArray.<?php
$stringArray = ["apple", "banana", "orange", "kiwi"];
echo "Original Array: ";
print_r($stringArray);
$filteredArray = array_filter($stringArray, function($str) {
return strlen($str) <= 4;
});
echo "Array after removing strings longer than 4 characters: ";
print_r($filteredArray);
?>Original Array: Array
(
[0] => apple
[1] => banana
[2] => orange
[3] => kiwi
)
Array after removing strings longer than 4 characters: Array
(
[3] => kiwi
)In this tutorial, we learned How to Remove Items from Set based on a Condition in PHP language with well detailed examples.