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function fgetc (handle) {
    // Get a character from file pointer  
    // 
    // version: 909.322
    // discuss at: http://phpjs.org/functions/fgetc    // +   original by: Brett Zamir (http://brett-zamir.me)
    // *     example 1: fopen('http://kevin.vanzonneveld.net/pj_test_supportfile_1.htm', 'r');
    // *     example 1: fgetc(handle);
    // *     returns 1: '1'
     if (!this.php_js || !this.php_js.resourceData || !this.php_js.resourceDataPointer) {
        return false;
    }
 
    var start = this.php_js.resourceDataPointer[handle.id]; 
    if (start === undefined || !this.php_js.resourceData[handle.id][start]) {
        return false; // Resource was already closed or already reached the end of the file
    }
     var length = 1; // 2 byte-character (or surrogate)
    this.php_js.resourceDataPointer[handle.id] += length;
    var chr = this.php_js.resourceData[handle.id].substr(start, length);
 
    // If don't want to treat surrogate pairs as single characters, can delete from here until the last line (return chr;)    var nextChr = this.php_js.resourceData[handle.id].substr(start+1, 1);
    var prevChr = start === 0 ? false : this.php_js.resourceData[handle.id].substr(start-1, 1);
    var code = chr.charCodeAt(0);
    if (0xD800 <= code && code <= 0xDBFF) { // High surrogate (could change last hex to 0xDB7F to treat high private surrogates as single characters)
        if (!nextChr)  {            throw 'High surrogate without following low surrogate (fgetc)';
        }
        var next = nextChr.charCodeAt(0);
        if (0xDC00 > next || next > 0xDFFF) {
            throw 'High surrogate without following low surrogate (fgetc)';        }
        this.php_js.resourceDataPointer[handle.id] += length; // Need to increment counter again since grabbing next item
        return chr+nextChr;
    }
    else if (0xDC00 <= code && code <= 0xDFFF) { // Low surrogate        if (prevChr === false) {
            throw 'Low surrogate without preceding high surrogate (fgetc)';
        }
        var prev = prevChr.charCodeAt(0);
        if (0xD800 > prev || prev > 0xDBFF) { //(could change last hex to 0xDB7F to treat high private surrogates as single characters)            throw 'Low surrogate without preceding high surrogate (fgetc)';
        }
        return prevChr+chr; // Probably shouldn't have reached here, at least if traversing by fgetc()
    }
        return chr;
}

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fopen('http://kevin.vanzonneveld.net/pj_test_supportfile_1.htm', 'r');
fgetc(handle);

1

'1'