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function fread (handle, length) {
    // Binary-safe file read  
    // 
    // version: 1109.2015
    // discuss at: http://phpjs.org/functions/fread    // +   original by: Brett Zamir (http://brett-zamir.me)
    // *     example 1: fopen('http://kevin.vanzonneveld.net/pj_test_supportfile_1.htm', 'r');
    // *     example 1: fread(handle, 10);
    // *     returns 1: '123'
    if (!this.php_js || !this.php_js.resourceData || !this.php_js.resourceDataPointer) {        return false;
    }
 
    length = length < 8192 ? (Math.floor(length / 2) || 1) : 4096; // 2 bytes per character (or surrogate) means limit of 8192 bytes = 4096 characters; ensure at least one
     var start = this.php_js.resourceDataPointer[handle.id];
 
    if (start === undefined) {
        return false; // Resource was already closed
    } 
    if (!this.php_js.resourceData[handle.id][start]) {
        return ''; // already reached the end of the file (but pointer not closed)
    }
     this.php_js.resourceDataPointer[handle.id] += length;
 
    return this.php_js.resourceData[handle.id].substr(start, length); // Extra length won't be a problem here
}

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fopen('http://kevin.vanzonneveld.net/pj_test_supportfile_1.htm', 'r');
fread(handle, 10);

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'123'