wrappers colored code

<?php

function theme_get_array_value($arr = array(), $key = null, $def = false){
    if (is_array($arr) && isset($arr[$key])){
        return $arr[$key];
    }
    return $def;
}

function theme_is_empty_html($str){
    return (!is_string($str) || strlen(str_replace(array('&nbsp;', ' ', "\n", "\r", "\t"), '', $str)) == 0);
}

function theme_is_vmenu_widget($id){
    return (strpos($id, 'vmenu') !== false);
}

function theme_trim_long_str($str, $len = 50, $sep = ' '){
    $words = split($sep, $str);
    $wcount = count($words);
    while( $wcount > 0 && strlen(join($sep, array_slice($words, 0, $wcount))) > $len) $wcount--;
    if ($wcount != count($words)) {
        $str = join($sep, array_slice($words, 0, $wcount)) . '&hellip;';
    }
    return $str;
}


function theme_get_current_url() {
    $pageURL = 'http';
    if (is_ssl()) {
        $pageURL .= 's';
    }
    $pageURL .= '://' . $_SERVER['SERVER_NAME'];
    if ($_SERVER['SERVER_PORT'] != '80') {
        $pageURL .= ':' . $_SERVER["SERVER_PORT"];
    }
    $pageURL .= $_SERVER["REQUEST_URI"];
    return $pageURL;
}

function theme_remove_last_slash($url) {
    $len = strlen($url);
    if ( $len > 0 && $url[$len-1] == '/') {
        $url =  substr($url, 0, -1);
    }
    return $url;
}

function theme_is_current_url($url) {
    // remove # anchor
    if (strpos( $url, '#' )) {
        $url =  substr($url, 0, strpos( $url, '#'));
    }

    $url = theme_remove_last_slash($url);
    $cur = theme_remove_last_slash(theme_get_current_url());

    // compare
    return ($cur == $url);
}

function theme_prepare_attr($attr = array()) {
    $attr = wp_parse_args($attr);
    if (count($attr)  == 0) return '';
    $result = '';
    foreach($attr as $name => $value){
        if(empty($name) || empty($value)) continue;
        $result .= ' ' . strtolower($name) . '="' . esc_attr($value) . '"';
    }
    return $result;
}