How to convert array into int array in php

PHP language provides many functions to operate arrays, including functions that convert string array types into integer array types. This function can be used to convert string arrays into integer arrays. .

In PHP, you can use the array_map() function to convert the string type in the string array into an integer type. The syntax of the array_map() function is as follows:

array array_map(callable $callback, array $array1 [, array $... ]);

Among them, $callback is a callback function, which can pass in each element in the array and then process each element; and $array1 [, array $... ] is the array to be converted.

The sample code for using the array_map() function to convert a string array into an integer array is as follows:

<?php
$array = array("1", "2", "3", "4", "5");
$new_array = array_map(&#39;intval&#39;, $array); // 将字符串数组转化成整型数组
print_r($new_array);
?>

In the above code, the string is converted into an integer type by using the intval() function number, and then use the array_map() function to store the integer number into $new_array. Use the print_r() function to output a new integer array.

In addition to using the array_map() function, you can also use the foreach loop to convert a string array into an integer array. The code example is as follows:

<?php
$array = array("1", "2", "3", "4", "5");
$new_array = array(); // 定义新的整型数组
foreach ($array as $value) {
    $new_array[] = intval($value); // 将字符串转化成整型数，存储到新数组中
}

print_r($new_array);
?>

To summarize, you can use array_map() or foreach loop in PHP to convert an array of string type into an array of integer type. It should be noted that when using these functions, each element needs to be processed the same.

The above is the detailed content of How to convert array into int array in php. For more information, please follow other related articles on the PHP Chinese website!