function echo () {
    // !No description available for echo. @php.js developers: Please update the function summary text file.
    // 
    // version: 911.1619
    // discuss at: http://phpjs.org/functions/echo
    // +   original by: Philip Peterson
    // +   improved by: echo is bad
    // +   improved by: Nate
    // +    revised by: Der Simon (http://innerdom.sourceforge.net/)
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Eugene Bulkin (http://doubleaw.com/)
    // +   input by: JB
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // %        note 1: If browsers start to support DOM Level 3 Load and Save (parsing/serializing),
    // %        note 1: we wouldn't need any such long code (even most of the code below). See
    // %        note 1: link below for a cross-browser implementation in JavaScript. HTML5 might
    // %        note 1: possibly support DOMParser, but that is not presently a standard.
    // %        note 2: Although innerHTML is widely used and may become standard as of HTML5, it is also not ideal for
    // %        note 2: use with a temporary holder before appending to the DOM (as is our last resort below),
    // %        note 2: since it may not work in an XML context
    // %        note 3: Using innerHTML to directly add to the BODY is very dangerous because it will
    // %        note 3: break all pre-existing references to HTMLElements.
    // *     example 1: echo('<div><p>abc</p><p>abc</p></div>');
    // *     returns 1: undefined
    var arg = '', argc = arguments.length, argv = arguments, i = 0;
    var win = this.window;
    var d = win.document;
    var ns_xhtml = 'http://www.w3.org/1999/xhtml';
    var ns_xul = 'http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul'; // If we're in a XUL context

    var holder;

    var stringToDOM = function (str, parent, ns, container) {
        var extraNSs = '';
        if (ns === ns_xul) {
            extraNSs = ' xmlns:html="'+ns_xhtml+'"';
        }
        var stringContainer = '<'+container+' xmlns="'+ns+'"'+extraNSs+'>'+str+'</'+container+'>';
        if (win.DOMImplementationLS &&
            win.DOMImplementationLS.createLSInput &&
            win.DOMImplementationLS.createLSParser) { // Follows the DOM 3 Load and Save standard, but not
            // implemented in browsers at present; HTML5 is to standardize on innerHTML, but not for XML (though
            // possibly will also standardize with DOMParser); in the meantime, to ensure fullest browser support, could
            // attach http://svn2.assembla.com/svn/brettz9/DOMToString/DOM3.js (see http://svn2.assembla.com/svn/brettz9/DOMToString/DOM3.xhtml for a simple test file)
            var lsInput = DOMImplementationLS.createLSInput();
            // If we're in XHTML, we'll try to allow the XHTML namespace to be available by default
            lsInput.stringData = stringContainer;
            var lsParser = DOMImplementationLS.createLSParser(1, null); // synchronous, no schema type
            return lsParser.parse(lsInput).firstChild;
        }
        else if (win.DOMParser) {
            // If we're in XHTML, we'll try to allow the XHTML namespace to be available by default
            return new DOMParser().parseFromString(stringContainer, 'text/xml').documentElement.firstChild;
        }
        else if (win.ActiveXObject) { // We don't bother with a holder in Explorer as it doesn't support namespaces
            var d = new ActiveXObject('MSXML2.DOMDocument');
            d.loadXML(str);
            return d.documentElement;
        }
        /*else if (win.XMLHttpRequest) { // Supposed to work in older Safari
            var req = new win.XMLHttpRequest;
            req.open('GET', 'data:application/xml;charset=utf-8,'+encodeURIComponent(str), false);
            if (req.overrideMimeType) {
                req.overrideMimeType('application/xml');
            }
            req.send(null);
            return req.responseXML;
        }*/
        else { // Document fragment did not work with innerHTML, so we create a temporary element holder
            // If we're in XHTML, we'll try to allow the XHTML namespace to be available by default
            //if (d.createElementNS && (d.contentType && d.contentType !== 'text/html')) { // Don't create namespaced elements if we're being served as HTML (currently only Mozilla supports this detection in true XHTML-supporting browsers, but Safari and Opera should work with the above DOMParser anyways, and IE doesn't support createElementNS anyways)
            if (d.createElementNS &&  // Browser supports the method
                d.documentElement.namespaceURI && (d.documentElement.namespaceURI !== null || // We can use if the document is using a namespace
                d.documentElement.nodeName.toLowerCase() !== 'html' || // We know it's not HTML4 or less, if the tag is not HTML (even if the root namespace is null)
                (d.contentType && d.contentType !== 'text/html') // We know it's not regular HTML4 or less if this is Mozilla (only browser supporting the attribute) and the content type is something other than text/html; other HTML5 roots (like svg) still have a namespace
            )) { // Don't create namespaced elements if we're being served as HTML (currently only Mozilla supports this detection in true XHTML-supporting browsers, but Safari and Opera should work with the above DOMParser anyways, and IE doesn't support createElementNS anyways); last test is for the sake of being in a pure XML document
                holder = d.createElementNS(ns, container);
            }
            else {
                holder = d.createElement(container); // Document fragment did not work with innerHTML
            }
            holder.innerHTML = str;
            while (holder.firstChild) {
                parent.appendChild(holder.firstChild);
            }
            return false;
        }
        // throw 'Your browser does not support DOM parsing as required by echo()';
    };


    var ieFix = function (node) {
        if (node.nodeType === 1) {
            var newNode = d.createElement(node.nodeName);
            var i, len;
            if (node.attributes && node.attributes.length > 0) {
                for (i = 0, len = node.attributes.length; i < len; i++) {
                    newNode.setAttribute(node.attributes[i].nodeName, node.getAttribute(node.attributes[i].nodeName));
                }
            }
            if (node.childNodes && node.childNodes.length > 0) {
                for (i = 0, len = node.childNodes.length; i < len; i++) {
                    newNode.appendChild(ieFix(node.childNodes[i]));
                }
            }
            return newNode;
        }
        else {
            return d.createTextNode(node.nodeValue);
        }
    };

    for (i = 0; i < argc; i++ ) {
        arg = argv[i];
        if (this.php_js && this.php_js.ini && this.php_js.ini['phpjs.echo_embedded_vars']) {
            arg = arg.replace(/(.?)\{\$(.*?)\}/g, function (s, m1, m2) { 
                // We assume for now that embedded variables do not have dollar sign; to add a dollar sign, you currently must use {$$var} (We might change this, however.)
                // Doesn't cover all cases yet: see http://php.net/manual/en/language.types.string.php#language.types.string.syntax.double
                if (m1 !== '\\') {
                    return m1+eval(m2);
                }
                else {
                    return s;
                }
            });
        }
        if (d.appendChild) {
            if (d.body) {
                if (win.navigator.appName == 'Microsoft Internet Explorer') { // We unfortunately cannot use feature detection, since this is an IE bug with cloneNode nodes being appended
                    d.body.appendChild(ieFix(stringToDOM(arg)));
                }
                else {
                    var unappendedLeft = stringToDOM(arg, d.body, ns_xhtml, 'div').cloneNode(true); // We will not actually append the div tag (just using for providing XHTML namespace by default)
                    if (unappendedLeft) {
                        d.body.appendChild(unappendedLeft);
                    }
                }
            } else {
                d.documentElement.appendChild(stringToDOM(arg, d.documentElement, ns_xul, 'description')); // We will not actually append the description tag (just using for providing XUL namespace by default)
            }
        } else if (d.write) {
            d.write(arg);
        }/* else { // This could recurse if we ever add print!
            print(arg);
        }*/
    }
}

function date(format, timestamp) {
    // Format a local date/time  
    // 
    // version: 911.1619
    // discuss at: http://phpjs.org/functions/date
    // +   original by: Carlos R. L. Rodrigues (http://www.jsfromhell.com)
    // +      parts by: Peter-Paul Koch (http://www.quirksmode.org/js/beat.html)
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: MeEtc (http://yass.meetcweb.com)
    // +   improved by: Brad Touesnard
    // +   improved by: Tim Wiel
    // +   improved by: Bryan Elliott
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   improved by: David Randall
    // +      input by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   improved by: Theriault
    // +  derived from: gettimeofday
    // +      input by: majak
    // +   bugfixed by: majak
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: Alex
    // +   bugfixed by: Brett Zamir (http://brett-zamir.me)
    // +   improved by: Theriault
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // %        note 1: Uses global: php_js to store the default timezone
    // *     example 1: date('H:m:s \\m \\i\\s \\m\\o\\n\\t\\h', 1062402400);
    // *     returns 1: '09:09:40 m is month'
    // *     example 2: date('F j, Y, g:i a', 1062462400);
    // *     returns 2: 'September 2, 2003, 2:26 am'
    // *     example 3: date('Y W o', 1062462400);
    // *     returns 3: '2003 36 2003'
    // *     example 4: x = date('Y m d', (new Date()).getTime()/1000); // 2009 01 09
    // *     example 4: (x+'').length == 10
    // *     returns 4: true
    // *     example 5: date('W', 1104534000);
    // *     returns 5: '53'
    // *     example 6: date('B t', 1104534000);
    // *     returns 6: '999 31'
    // *     example 7: date('W', 1293750000); // 2010-12-31
    // *     returns 7: '52'
    // *     example 8: date('W', 1293836400); // 2011-01-01
    // *     returns 8: '52'
    // *     example 9: date('W Y-m-d', 1293974054); // 2011-01-02
    // *     returns 9: '52 2011-01-02'
    var that = this,
        jsdate = (
        (timestamp === undefined) ? new Date() : // Not provided
        (typeof(timestamp) === 'object') ? new Date(timestamp) : // Javascript Date()
        new Date(timestamp * 1000) // UNIX timestamp (auto-convert to int)
    ), //, tal= [], // Keep this here (works, but for code commented-out below for file size reasons)
        formatChr = /\\?([a-z])/gi,
        formatChrCb = function (t, s) {
            return f[t] ? f[t]() : s;
        },
        _pad = function (n, c) {
            if ((n = n + "").length < c) {
                return new Array((++c) - n.length).join("0") + n;
            } else {
                return n;
            }
        },
        txt_words = ["Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur",
        "January", "February", "March", "April", "May", "June", "July",
        "August", "September", "October", "November", "December"],
        txt_ordin = {1: "st", 2: "nd", 3: "rd", 21: "st", 22: "nd", 23: "rd", 31: "st"},
        f = {
        // Day
            d: function () {
                return _pad(f.j(), 2);
            },
            D: function () {
                return f.l().substr(0, 3);
            },
            j: function () {
                return jsdate.getDate();
            },
            l: function () {
                return txt_words[f.w()] + 'day';
            },
            N: function () {
                return f.w() || 7;
            },
            S: function () {
                return txt_ordin[f.j()] || 'th';
            },
            w: function () {
                return jsdate.getDay();
            },
            z: function () {
                return (jsdate - new Date(jsdate.getFullYear(), 0, 1)) / 864e5 >> 0;
            },

        // Week
            W: function () {
                var c;
                return 1 + Math.round(((c = new Date(f.Y(), f.n() - 1, f.j() - f.N() + 3)) - (new Date(c.getFullYear(), 0, 4))) / 864e5 / 7);
            },

        // Month
            F: function () {
                return txt_words[6 + f.n()];
            },
            m: function () {
                return _pad(f.n(), 2);
            },
            M: function () {
                return f.F().substr(0, 3);
            },
            n: function () {
                return jsdate.getMonth() + 1;
            },
            t: function () {
                return (new Date(f.Y(), f.n() + 1, 0)).getDate();
            },

        // Year
            L: function () {
                var y = f.Y();
                return (!(y & 3) && (y % 1e2 || !(y % 4e2))) ? 1 : 0;
            },
            o: function () {
                return f.Y() + (f.n() === 12 && f.W() < 9 ? -1 : (f.n() === 1 && f.W() > 9 ? 1 : 0));
            },
            Y: function () {
                return jsdate.getFullYear();
            },
            y: function () {
                return (jsdate.getFullYear() + "").slice(2);
            },

        // Time
            a: function () {
                return jsdate.getHours() > 11 ? "pm" : "am";
            },
            A: function () {
                return f.a().toUpperCase();
            },
            B: function () {
                return _pad(Math.floor(((jsdate.getUTCHours() * 36e2) + (jsdate.getUTCMinutes() * 60) +
                                        jsdate.getUTCSeconds() + 36e2) / 86.4) % 1e3, 3);
            },
            g: function () {
                return jsdate.getHours() % 12 || 12;
            },
            G: function () {
                return jsdate.getHours();
            },
            h: function () {
                return _pad(f.g(), 2);
            },
            H: function () {
                return _pad(f.G(), 2);
            },
            i: function () {
                return _pad(jsdate.getMinutes(), 2);
            },
            s: function () {
                return _pad(jsdate.getSeconds(), 2);
            },
            u: function () {
                return _pad(jsdate.getMilliseconds() * 1000, 6);
            },

        // Timezone
            e: function () {
// The following works, but requires inclusion of the very large timezone_abbreviations_list() function
/*                var abbr='', i=0;
                if (that.php_js && that.php_js.default_timezone) {
                    return that.php_js.default_timezone;
                }
                if (!tal.length) {
                    tal = that.timezone_abbreviations_list();
                }
                for (abbr in tal) {
                    for (i=0; i < tal[abbr].length; i++) {
                        if (tal[abbr][i].offset === -jsdate.getTimezoneOffset()*60) {
                            return tal[abbr][i].timezone_id;
                        }
                    }
                }
*/
                return 'UTC';
            },
            I: function () {
                return 0 + (jsdate.getTimezoneOffset() < Math.max((new Date(f.Y(), 0, 1)).getTimezoneOffset(),
                                                                                                                (new Date(f.Y(), 6, 1)).getTimezoneOffset()));
            },
            O: function () {
                return ((jsdate.getTimezoneOffset() > 0) ? "-" : "+") + _pad(Math.abs(jsdate.getTimezoneOffset() / 60 * 100), 4);
            },
            P: function () {
                var O = f.O();
                return (O.substr(0, 3) + ":" + O.substr(3, 2));
            },
            T: function () {

// The following works, but requires inclusion of the very large timezone_abbreviations_list() function
/*                var abbr='', i=0;
                if (!tal.length) {
                    tal = that.timezone_abbreviations_list();
                }
                if (that.php_js && that.php_js.default_timezone) {
                    for (abbr in tal) {
                        for (i=0; i < tal[abbr].length; i++) {
                            if (tal[abbr][i].timezone_id === that.php_js.default_timezone) {
                                return abbr.toUpperCase();
                            }
                        }
                    }
                }
                for (abbr in tal) {
                    for (i=0; i < tal[abbr].length; i++) {
                        if (tal[abbr][i].offset === -jsdate.getTimezoneOffset()*60) {
                            return abbr.toUpperCase();
                        }
                    }
                }
*/
                return 'UTC';
            },
            Z: function () {
                return -jsdate.getTimezoneOffset() * 60;
            },

        // Full Date/Time
            c: function () {
                return 'Y-m-d\\Th:i:sP'.replace(formatChr, formatChrCb);
            },
            r: function () {
                return 'D, d M Y H:i:s O'.replace(formatChr, formatChrCb);
            },
            U: function () {
                return Math.round(jsdate.getTime() / 1000);
            }
        };
    return format.replace(formatChr, formatChrCb);
}

function strtotime (str, now) {
    // Convert string representation of date and time to a timestamp  
    // 
    // version: 911.1619
    // discuss at: http://phpjs.org/functions/strtotime
    // +   original by: Caio Ariede (http://caioariede.com)
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: David
    // +   improved by: Caio Ariede (http://caioariede.com)
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Wagner B. Soares
    // +   bugfixed by: Artur Tchernychev
    // %        note 1: Examples all have a fixed timestamp to prevent tests to fail because of variable time(zones)
    // *     example 1: strtotime('+1 day', 1129633200);
    // *     returns 1: 1129719600
    // *     example 2: strtotime('+1 week 2 days 4 hours 2 seconds', 1129633200);
    // *     returns 2: 1130425202
    // *     example 3: strtotime('last month', 1129633200);
    // *     returns 3: 1127041200
    // *     example 4: strtotime('2009-05-04 08:30:00');
    // *     returns 4: 1241418600
 
    var i, match, s, strTmp = '', parse = '';

    strTmp = str;
    strTmp = strTmp.replace(/\s{2,}|^\s|\s$/g, ' '); // unecessary spaces
    strTmp = strTmp.replace(/[\t\r\n]/g, ''); // unecessary chars

    if (strTmp == 'now') {
        return (new Date()).getTime()/1000; // Return seconds, not milli-seconds
    } else if (!isNaN(parse = Date.parse(strTmp))) {
        return (parse/1000);
    } else if (now) {
        now = new Date(now*1000); // Accept PHP-style seconds
    } else {
        now = new Date();
    }

    strTmp = strTmp.toLowerCase();

    var __is =
    {
        day:
        {
            'sun': 0,
            'mon': 1,
            'tue': 2,
            'wed': 3,
            'thu': 4,
            'fri': 5,
            'sat': 6
        },
        mon:
        {
            'jan': 0,
            'feb': 1,
            'mar': 2,
            'apr': 3,
            'may': 4,
            'jun': 5,
            'jul': 6,
            'aug': 7,
            'sep': 8,
            'oct': 9,
            'nov': 10,
            'dec': 11
        }
    };

    var process = function (m) {
        var ago = (m[2] && m[2] == 'ago');
        var num = (num = m[0] == 'last' ? -1 : 1) * (ago ? -1 : 1);

        switch (m[0]) {
            case 'last':
            case 'next':
                switch (m[1].substring(0, 3)) {
                    case 'yea':
                        now.setFullYear(now.getFullYear() + num);
                        break;
                    case 'mon':
                        now.setMonth(now.getMonth() + num);
                        break;
                    case 'wee':
                        now.setDate(now.getDate() + (num * 7));
                        break;
                    case 'day':
                        now.setDate(now.getDate() + num);
                        break;
                    case 'hou':
                        now.setHours(now.getHours() + num);
                        break;
                    case 'min':
                        now.setMinutes(now.getMinutes() + num);
                        break;
                    case 'sec':
                        now.setSeconds(now.getSeconds() + num);
                        break;
                    default:
                        var day;
                        if (typeof (day = __is.day[m[1].substring(0, 3)]) != 'undefined') {
                            var diff = day - now.getDay();
                            if (diff == 0) {
                                diff = 7 * num;
                            } else if (diff > 0) {
                                if (m[0] == 'last') {diff -= 7;}
                            } else {
                                if (m[0] == 'next') {diff += 7;}
                            }
                            now.setDate(now.getDate() + diff);
                        }
                }
                break;

            default:
                if (/\d+/.test(m[0])) {
                    num *= parseInt(m[0], 10);

                    switch (m[1].substring(0, 3)) {
                        case 'yea':
                            now.setFullYear(now.getFullYear() + num);
                            break;
                        case 'mon':
                            now.setMonth(now.getMonth() + num);
                            break;
                        case 'wee':
                            now.setDate(now.getDate() + (num * 7));
                            break;
                        case 'day':
                            now.setDate(now.getDate() + num);
                            break;
                        case 'hou':
                            now.setHours(now.getHours() + num);
                            break;
                        case 'min':
                            now.setMinutes(now.getMinutes() + num);
                            break;
                        case 'sec':
                            now.setSeconds(now.getSeconds() + num);
                            break;
                    }
                } else {
                    return false;
                }
                break;
        }
        return true;
    };

    match = strTmp.match(/^(\d{2,4}-\d{2}-\d{2})(?:\s(\d{1,2}:\d{2}(:\d{2})?)?(?:\.(\d+))?)?$/);
    if (match != null) {
        if (!match[2]) {
            match[2] = '00:00:00';
        } else if (!match[3]) {
            match[2] += ':00';
        }

        s = match[1].split(/-/g);

        for (i in __is.mon) {
            if (__is.mon[i] == s[1] - 1) {
                s[1] = i;
            }
        }
        s[0] = parseInt(s[0], 10);

        s[0] = (s[0] >= 0 && s[0] <= 69) ? '20'+(s[0] < 10 ? '0'+s[0] : s[0]+'') : (s[0] >= 70 && s[0] <= 99) ? '19'+s[0] : s[0]+'';
        return parseInt(this.strtotime(s[2] + ' ' + s[1] + ' ' + s[0] + ' ' + match[2])+(match[4] ? match[4]/1000 : ''), 10);
    }

    var regex = '([+-]?\\d+\\s'+
        '(years?|months?|weeks?|days?|hours?|min|minutes?|sec|seconds?'+
        '|sun\\.?|sunday|mon\\.?|monday|tue\\.?|tuesday|wed\\.?|wednesday'+
        '|thu\\.?|thursday|fri\\.?|friday|sat\\.?|saturday)'+
        '|(last|next)\\s'+
        '(years?|months?|weeks?|days?|hours?|min|minutes?|sec|seconds?'+
        '|sun\\.?|sunday|mon\\.?|monday|tue\\.?|tuesday|wed\\.?|wednesday'+
        '|thu\\.?|thursday|fri\\.?|friday|sat\\.?|saturday))'+
        '(\\sago)?';

    match = strTmp.match(new RegExp(regex, 'gi')); // Brett: seems should be case insensitive per docs, so added 'i'
    if (match == null) {
        return false;
    }

    for (i = 0; i < match.length; i++) {
        if (!process(match[i].split(' '))) {
            return false;
        }
    }

    return (now.getTime()/1000);
}