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function require (filename) {
    // !No description available for require. @php.js developers: Please update the function summary text file.
    // 
    // version: 1001.2911
    // discuss at: http://phpjs.org/functions/require    // +   original by: Michael White (http://getsprink.com)
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // %        note 1: Force Javascript execution to pause until the file is loaded. Usually causes failure if the file never loads. ( Use sparingly! )    // %        note 2: Uses global: php_js to keep track of included files
    // -    depends on: file_get_contents
    // *     example 1: require('http://www.phpjs.org/js/phpjs/_supporters/pj_test_supportfile_2.js');
    // *     returns 1: 2
    var d = this.window.document;    var js_code = this.file_get_contents(filename);
    var script_block = d.createElementNS ? d.createElementNS('http://www.w3.org/1999/xhtml', 'script') : d.createElement('script');
    script_block.type = 'text/javascript';
    var client_pc = navigator.userAgent.toLowerCase();
    if ((client_pc.indexOf('msie') !== -1) && (client_pc.indexOf('opera') === -1)) {        script_block.text = js_code;
    } else {
        script_block.appendChild(d.createTextNode(js_code));
    }
        if (typeof(script_block) != "undefined") {
        d.getElementsByTagNameNS ? d.getElementsByTagNameNS('http://www.w3.org/1999/xhtml', 'head')[0].appendChild(script_block) : d.getElementsByTagName('head')[0].appendChild(script_block);
 
        // save include state for reference by include_once and require_once()
        var cur_file = {};        cur_file[this.window.location.href] = 1;
 
        // BEGIN REDUNDANT
        this.php_js = this.php_js || {};
        // END REDUNDANT 
        if (!this.php_js.includes) {
            this.php_js.includes = cur_file;
        }
         if (!this.php_js.includes[filename]) {
            this.php_js.includes[filename] = 1;
            return 1;
        } else {
            return ++this.php_js.includes[filename];        }
    }
    return 0;
}

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require('http://www.phpjs.org/js/phpjs/_supporters/pj_test_supportfile_2.js');

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