How does an excellent JS code be rewritten into PHP?

Hsfzxjy This "17 line code implementation of simple Javascript string template" in the front-end is very useful, I would like to ask you how much PHP version should be rewritten.

function render(template, context) {    var tokenReg = /(\\)?\{([^\{\}\\]+)(\\)?\}/g;    return template.replace(tokenReg, function (word, slash1, token, slash2) {        if (slash1 || slash2) {              return word.replace('\\', '');        }        var variables = token.replace(/\s/g, '').split('.');        var currentObject = context;        var i, length, variable;        for (i = 0, length = variables.length; i < length; ++i) {            variable = variables[i];            currentObject = currentObject[variable];            if (currentObject === undefined || currentObject === null) return '';        }        return currentObject;    })}

To hook a function to a String's prototype chain

String.prototype.render = function (context) {    return render(this, context);};

After that, we can call it this way:

"{greeting}! My name is { author.name }.".render({    greeting: "Hi",    author: {        name: "hsfzxjy"    }});// Hi! My name is hsfzxjy.

Reply content:

Hsfzxjy This "17 line code implementation of simple Javascript string template" in the front-end is very useful, I would like to ask you how much PHP version should be rewritten.

function render(template, context) {    var tokenReg = /(\\)?\{([^\{\}\\]+)(\\)?\}/g;    return template.replace(tokenReg, function (word, slash1, token, slash2) {        if (slash1 || slash2) {              return word.replace('\\', '');        }        var variables = token.replace(/\s/g, '').split('.');        var currentObject = context;        var i, length, variable;        for (i = 0, length = variables.length; i < length; ++i) {            variable = variables[i];            currentObject = currentObject[variable];            if (currentObject === undefined || currentObject === null) return '';        }        return currentObject;    })}

To hook a function to a String's prototype chain

String.prototype.render = function (context) {    return render(this, context);};

After that, we can call it this way:

"{greeting}! My name is { author.name }.".render({    greeting: "Hi",    author: {        name: "hsfzxjy"    }});// Hi! My name is hsfzxjy.

To add, built-in functions strtr do almost as much as a touch, out of no support point syntax to access multiple layers outside

  
    'Hi',    '{author.name}' => 'hsfzxjy',));

In addition, it is absolutely impossible to modify the prototype chain of built-in objects in JavaScript.

Just a simple string substitution, write about 12 lines in PHP, as follows:

function render($template, $arr) {    $reg = "/(\\\)?\{([^\{\}\\\]+)(\\\)?\}/s";    return preg_replace_callback($reg, function ($m) use ($arr) {        if (!empty($m[1])||!empty($m[3])||empty($m[2])) return str_replace("\\", '', $m[0]);        $variables = explode('.', preg_replace("/\s/", '', $m[2]));        foreach ($variables as $variable) {            $arr = isset($arr[$variable])?$arr[$variable]:null;            if (!$arr) return '';        }        return $arr;    }, $template);}

Use is the same

$data = array(    "greeting"=> "Hi",    "author"=>array("name"=>"hsfzxjy"));echo render("{greeting}! My name is { author.name }.",$data);// Hi! My name is hsfzxjy.

On the side of PHP seems useless, if you need to search for a bit. PHP is usually written as "{$greeting}! My name is {$author [' name ']}, and also parse what to do. Smarty and so on the template also built this parsing, why do you want to do it again?

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