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run code in 300+ PHP versions simultaneously

@ 2018-05-05T14:52:14Z

<?php

$url = 'https://example.com/folder1/folder2/style.css';

$paths = [ 'img/example1.png',
           '/img/example2.png',
           '../img/example3.png',
           '../../img/example4.png',
           'https://example.com/folder1/folder2/example5.png' ];

$folders = explode('/', trim(parse_url($url, PHP_URL_PATH), '/'));
array_pop($folders);
$prefix = explode('/' . $folders[0] . '/', $url)[0]; // need to be improved using parse_url to re-build
                                                     // properly the url with the correct syntax for each scheme.

function getURLFromPath($path, $prefix, $folders) {
    if ( parse_url($path, PHP_URL_SCHEME) )
        return $path;
    
    foreach (explode('/', ltrim($path, '/')) as $item) {
        if ( $item === '..' ) {
            array_pop($folders);
        } elseif ( $item === '.' ) {
        } else {
            $folders[] = $item;
        }
    }
    
    return $prefix . '/' . implode('/', $folders);
}

foreach ($paths as $path) {
    echo getURLFromPath($path, $prefix, $folders), PHP_EOL;
}

Output for git.master, git.master_jit, rfc.property-hooks: https://example.com/folder1/folder2/img/example1.png https://example.com/folder1/folder2/img/example2.png https://example.com/folder1/img/example3.png https://example.com/img/example4.png https://example.com/folder1/folder2/example5.png

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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