Online PHP editor | rfc for iaXNV

@ 2017-07-28T04:50:08Z

<?php


$str = "<input type=\"text\">\n<img src=\"\"><a href=\"\"><button type=\"button\"></button><div id=\"some\"></div><p></p>";
var_dump(removeTags($str, array('img')));

/**
 * Strip only certain tags in the given HTML string
 * @return String
 */
function removeTags($html, $tags){
    $existing_tags = getAllTagNames($html);
    $allowable_tags = '<'.implode('><', array_diff($existing_tags, $tags)).'>';
    return strip_tags($html, $allowable_tags);
}

/**
 * Get a list of tag names in the provided HTML string
 * @return Array
 */
function getAllTagNames($html){
    $tags = array();
    $part = explode("<", $html);
    foreach($part as $tag){
        $chunk = explode(" ", $tag);
        if(empty($chunk[0]) || $chunk[0][0] == "/") continue;
        $tag = trim($chunk[0], " >");
        if(!in_array($tag, $tags)) $tags[] = $tag;
    }
    return $tags;
}

Output for git.master, git.master_jit, rfc.property-hooks: string(90) "<input type="text"> <a href=""><button type="button"></button><div id="some"></div><p></p>"

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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