What are potential issues when combining strings in PHP using implode()?

When combining strings in PHP using implode(), a potential issue is that if the array being imploded contains null values, they will be converted to an empty string. To solve this issue, you can use array_map() to replace null values with a placeholder before imploding the array. 

// Example array with null values
$array = ['Hello', null, 'World', null, ''];

// Replace null values with a placeholder
$array = array_map(function($value) {
    return $value !== null ? $value : 'NULL';
}, $array);

// Combine strings using implode()
$result = implode(' ', $array);

echo $result;

Keywords

implode strings concatenation delimiter array

Related Questions