Question 40434 in PHP Question posted in
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How to avoid duplication when using 2 foreach php

Hello i have this code in php where i want 2 arrays to have their values put together, this is the code:

<?php
$values = [1,2,3];
$names = ['K', 'O', 'E'];
foreach($values as $value){
    foreach($names as $name){
        echo $value.$name;
    }
}
?>

What i get is:

1K1O1E2K2O2E3K3O3E

What i need is

1K2O3E

I am trying to understand that the second foreach executes more then the first array but cannot find the solution.

Tags:

2

Answers


  1. 0

    Since both arrays are the same length, you can use a loop over the length of the first array, and use the index to concatenate both values:

    <?php
    $values = [1,2,3];
    $names = ['K', 'O', 'E'];
    
    for ($i = 0; $i < count($values); $i++) {
        echo $values[$i] . $names[$i];
    }

    1K2O3E

    Based on your comment, you can use a single foreach with => to get the index, then use that to get the other value from names.

    <?php
    $values = [1,2,3];
    $names = ['K', 'O', 'E'];
    
    foreach ($values as $i => $v) {
        echo $v . $names[$i];
    }
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  2. 0

    To achieve the desired output of "1K2O3E", you can use the array_combine() function in PHP to combine the two arrays and then loop through the resulting array to create the desired output. Here’s an example:

    $values = [1, 2, 3];
$names = ['K', 'O', 'E'];

// combine the two arrays
$combined = array_combine($values, $names);

// initialize an empty string to store the output
$output = '';

// loop through the combined array and concatenate the values
foreach ($combined as $value => $name) {
    $output .= $value . $name;
}

// output the final result
echo $output;
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