Online PHP editor | rfc for 8lPcf

@ 2015-05-30T18:55:41Z

<?php
/**
 * check matching od braces
 * 
 * @param string $src     target string to check
 * @return bool
 */
function brace_check($src)
{
    $open_braces = str_split("({[");
    $close_braces = str_split(")}]");
    $braces = array_merge($open_braces, $close_braces);

    $tokens = token_get_all($src);
var_dump($tokens);
    //$tokens = array_filter($tokens,function($item){ return is_string($item); });
var_dump($tokens);
    $tokens = array_walk_recursive($tokens,function(&$item){ if (is_int($item)) $item = token_name($item); });
    
    $open_brace_stack = array();
    foreach($tokens as $key => $t){
        if (in_array($t,$open_braces)){
            array_push( $open_brace_stack, $t);
        }
        elseif (in_array($t,$close_braces)){
            if ( empty($open_brace_stack) ){
                return false;
            }
            $open_top = array_pop($open_brace_stack);
            $idx_open = array_search($open_top, $open_braces);
            $idx_close = array_search($t, $close_braces);
            if ( $idx_open !== $idx_close ){
                return false;
            }
        }
echo "token:$t" . PHP_EOL;
echo "open_brace_stack:" . print_r($open_brace_stack,true) . PHP_EOL;
    }
    return true;
}

//=========================
// test code

$html_case = <<<HTML
<?php
?>
<html>
...
<ul>
<li>1)...</li>
<li>2)...</li>
</ul>
...
<?php
...
?>
...
</html>
HTML;

$expressions = array(")(){}","[]({})","([])","{()[]}","([)]",$html_case);

//var_dump(array_map('brace_check', $expressions));

echo brace_check("([)]");

Output for git.master, git.master_jit: array(1) { [0]=> array(3) { [0]=> int(318) [1]=> string(4) "([)]" [2]=> int(1) } } array(1) { [0]=> array(3) { [0]=> int(318) [1]=> string(4) "([)]" [2]=> int(1) } } Warning: foreach() argument must be of type array|object, bool given in /in/8lPcf on line 21 1
Output for rfc.property-hooks: array(1) { [0]=> array(3) { [0]=> int(318) [1]=> string(4) "([)]" [2]=> int(1) } } array(1) { [0]=> array(3) { [0]=> int(318) [1]=> string(4) "([)]" [2]=> int(1) } } Warning: foreach() argument must be of type array|object, true given in /in/8lPcf on line 21 1

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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2016-08-14 Arrow functions - withdrawn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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