How to print array in php

In PHP, we often need to operate on arrays. Printing an array is a very common operation when debugging code. In this article, we will cover a few common ways to print PHP arrays.

Method 1: print_r

The most commonly used method of printing arrays in PHP is to use the print_r function. This function prints the array in an easy-to-read format, including the array's keys and values. The following is an example:

<?php $fruits = array("apple", "banana", "orange");
print_r($fruits);
?>

This code will output the following results:

Array
(
    [0] => apple
    [1] => banana
    [2] => orange
)

Method 2: var_dump

The var_dump function is another commonly used method of printing an array. It prints out the structure of the array, including the data type and length of each element. The following is an example:

<?php $fruits = array("apple", "banana", "orange");
var_dump($fruits);
?>

This code will output the following results:

array(3) {
  [0]=>
  string(5) "apple"
  [1]=>
  string(6) "banana"
  [2]=>
  string(6) "orange"
}

Method three: foreach loop

The third method is to use the foreach loop to print the array. This method is the easiest to understand because it allows us to access the elements of the array one by one. The following is an example:

<?php $fruits = array("apple", "banana", "orange");
foreach ($fruits as $fruit) {
    echo $fruit . "\n";
}
?>

This code will output the following results:

apple
banana
orange

Method 4: json_encode

Finally, we can also use the json_encode function to print the array. This function converts the array to JSON format for use in JavaScript. The following is an example:

<?php $fruits = array("apple", "banana", "orange");
echo json_encode($fruits);
?>

This code will output the following results:

["apple","banana","orange"]

The above is an introduction to four commonly used methods to print PHP arrays, you can according to your own needs and habits Make your selection. Either way, they will help you better understand and debug your PHP code.

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