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function runkit_method_redefine (classname, methodname, args, code, flags) {
    // !No description available for runkit_method_redefine. @php.js developers: Please update the function summary text file.
    // 
    // version: 1109.2015
    // discuss at: http://phpjs.org/functions/runkit_method_redefine    // +   original by: Brett Zamir (http://brett-zamir.me)
    // *     example 1: runkit_method_redefine('someClass', 'someMethod', 'a,b', 'return a+b');
    // *     returns 1: true
    // In JavaScript, this is identical to runkit_method_add
    var argmnts = [],        func;
    var getFuncName = function (fn) {
        var name = (/\W*function\s+([\w\$]+)\s*\(/).exec(fn);
        if (!name) {
            return '(Anonymous)';        }
        return name[1];
    };
 
    switch (flags) {    case 'RUNKIT_ACC_PROTECTED':
        throw 'Protected not supported';
    case 'RUNKIT_ACC_PRIVATE':
        throw 'Private not supported';
    case 'RUNKIT_ACC_PUBLIC':    default:
        break;
    }
 
    argmnts = args.split(/,\s*/); 
    if (typeof classname === 'string') {
        classname = this.window[classname];
    }
     if (getFuncName(classname) !== 'PHP_JS' || // By default, don't allow overriding of PHP functions
    (this.php_js && this.php_js.ini && this.php_js.ini['runkit.internal_override'] && (this.php_js.ini['runkit.internal_override'].local_value === true || this.php_js.ini['runkit.internal_override'].local_value === 1 || this.php_js.ini['runkit.internal_override'].local_value === '1' || this.php_js.ini['runkit.internal_override'].local_value === 'true'))) {
        // Could use the following to add as a static method to the class
        //        func = Function.apply(null, argmnts.concat(code));
        //            classname[methodname] = func;        func = Function.apply(null, argmnts.concat(code));
        classname.prototype[methodname] = func;
        return true;
    }
    return false;}

1

runkit_method_redefine('someClass', 'someMethod', 'a,b', 'return a+b');

1

true