Online PHP editor | rfc for vNhYl

@ 2017-05-21T10:39:29Z

<?php

    class TemplateString {
        // Usage:
        // $t = new TemplateString("Your name is {{name}}");
        // $t->name = "John";
        // echo $t; // Your name is John
        
        private $template;
        private $parameters = [];
        public function __construct( $template, array $defaultparams = null) {
            $this->template = $template;
            if( $defaultparams) $this->parameters = $defaultparams;
        }
        public function __set($k,$v) {
            $this->parameters[$k] = $v;
        }
        public function __get($k) {
            if( array_key_exists($k,$this->parameters)) {
                return $this->parameters[$k];
            }
            return null;
        }
        public function __toString() {
            $words = $this->parameters;
            return preg_replace_callback("/\{\{(\w+)\}\}/",function($m) use ($words) {
                if( array_key_exists($m[1],$words)) return $words[$m[1]];
                return $m[0];
            },$this->template);
        }
    }
    
    $t = new TemplateString("Your name is {{name}}\n");
    $t->name = "John";
    echo $t;
    $t->name = "Bill";
    echo $t;
    
    // alternative:
    $t2 = clone $t;
    $t2->name = "Sam";
    echo $t.$t2;

Output for git.master, git.master_jit, rfc.property-hooks: Your name is John Your name is Bill Your name is Bill Your name is Sam

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2022-12-01 RFC: Property hooks - included in PHP 8.4
2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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