Increase #wordpress memory limit with functions.php #php

functions.php

add_filter('upload_size_limit', 'mups_upload_max_increase_upload');
function mups_upload_max_increase_upload() {
    // Only enter the numeric value in bytes (eg. 104857600)
    // 1024 bytes = 1KB
    // 1048576 bytes = 1MB
    // (Formula: 1048576 * number of MB required = number of Bytes to enter in above form)
    return '3145728000';
}