Online PHP editor | rfc for f8kAs

@ 2022-07-07T07:51:47Z

<?php

function renderBlock(array $m) {
    $callable = "build$m[1]";
    return function_exists($callable)
        ? $callable($m[2] ?? '')
        : $m[0];
}

function buildPiechart(string $payloadString) {
    $values = [
        'angle' => 0,
        'colorset' => 'red',
        'stroke' => 1,
        'value' => 1
    ];
    $rules = [
        'angle' => '/\d+/',
        'colorset' => '/reds|yellows|blues/i',
        'stroke' => '/\d+/',
        'value' => '/\d+/',
    ];
    $attributes = preg_split(
        '/\h+/u',
        $payloadString,
        0,
        PREG_SPLIT_NO_EMPTY
    );
    foreach ($attributes as $pair) {
        [$key, $value] = explode(':', $pair, 2);
        if (
            key_exists($key, $values)
            && preg_match($rules[$key], $value, $m)
        ) {
            $values[$key] = $m[0];
        }
    }
    return sprintf(
        '<pie a="%s" c="%s" s="%s" v="%s">',
        ...array_values($values)
    );
}

$text = 'here is a block to be replaced [block:piechart value:25   angle:0]  [block] and [block:notcoded attr:val] another one [block:piechart colorset:reds value:20]';

echo preg_replace_callback(
         '/\[block:([a-z]+)\h*([^\]\r\n]*)\]/u',
         'renderBlock',
         $text
     );

Output for git.master, git.master_jit, rfc.property-hooks: here is a block to be replaced <pie a="0" c="red" s="1" v="25"> [block] and [block:notcoded attr:val] another one <pie a="0" c="reds" s="1" v="20">

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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