ctype_space - PHP code example

Learn How to Use PHP Function Ctype_Space

Learn How to Use PHP Function ctype_space

The php function ctype_space is part of the ctype extension (Ctypes) which lets you validate the types of variables and functions. The ctype_space function checks whether a string contains only whitespace characters, which includes horizontal tab, vertical tab, line feed, carriage return and form feed characters.

The test string must be all lowercase or uppercase letters from A to Z. Moreover, the test string must not contain any numbers or special symbols like underscores and periods. In case of failure, the ctype_space function will return False.

Note: The ctype_space function is EXPERIMENTAL. This means that the behaviour of this function can change in a future release of PHP without notice. So please use it at your own risk and make sure that you keep up with the latest version of PHP.

The ctype_alpha() function is similar to ctype_space, except that it tests whether the input string is alphabetic or not. The test string must be all lowercase or capital letters from A to Z. Moreover, it must not contain any numbers or special symbols like commas and ampersands. The ctype_alpha() function will return True if the test string is alphabetic, and False otherwise.

ctype_space example

    public function parse(Token $token): Node
    {
        $stream = $this->parser->getStream();
        $stream->expect(/* Token::BLOCK_END_TYPE */ 3);
        $body = $this->parser->subparse([$this, 'decideBlockEnd'], true);
        $stream->expect(/* Token::BLOCK_END_TYPE */ 3);

        // in a sandbox tag, only include tags are allowed         if (!$body instanceof IncludeNode) {
            foreach ($body as $node) {
                if ($node instanceof TextNode && ctype_space($node->getAttribute('data'))) {
                    continue;
                }

                if (!$node instanceof IncludeNode) {
                    throw new SyntaxError('Only "include" tags are allowed within a "sandbox" section.', $node->getTemplateLine(), $stream->getSourceContext());
                }
            }
        }

        return new SandboxNode($body, $token->getLine(), $this->getTag());
    }

$c = new Representation('Children');

            if (1 === \count($childNodes->contents) && ($node = \reset($childNodes->contents)) && \in_array('depth_limit', $node->hints, true)) {
                $n = new InstanceValue();
                $n->transplant($node);
                $n->name = 'childNodes';
                $n->classname = 'DOMNodeList';
                $c->contents = [$n];
            } else {
                foreach ($childNodes->contents as $node) {
                    // Remove text nodes if theyre empty                     if ($node instanceof BlobValue && '#text' === $node->name && (\ctype_space($node->value->contents) || '' === $node->value->contents)) {
                        continue;
                    }

                    $c->contents[] = $node;
                }
            }

            $o->addRepresentation($c, 0);
        }

        if ($childNodes) {

    public function getCurrentToken(): Token
    {
        return $this->stream->getCurrent();
    }

    private function filterBodyNodes(Node $node, bool $nested = false): ?Node
    {
        // check that the body does not contain non-empty output nodes         if (
            ($node instanceof TextNode && !ctype_space($node->getAttribute('data')))
            ||
            (!$node instanceof TextNode && !$node instanceof BlockReferenceNode && $node instanceof NodeOutputInterface)
        ) {
            if (false !== strpos((string) $node, \chr(0xEF).\chr(0xBB).\chr(0xBF))) {
                $t = substr($node->getAttribute('data'), 3);
                if ('' === $t || ctype_space($t)) {
                    // bypass empty nodes starting with a BOM                     return null;
                }
            }

            if (!\count($nodes)) {
                $nodes = new Node([$nodes]);
            }

            foreach ($nodes as $node) {
                if (!\count($node)) {
                    continue;
                }

                if ($node instanceof TextNode && ctype_space($node->getAttribute('data'))) {
                    continue;
                }

                if ($node instanceof BlockReferenceNode) {
                    continue;
                }

                $traitable = false;
                break;
            }
        }

if (!function_exists('ctype_lower')) {
    function ctype_lower(mixed $text): bool { return p\Ctype::ctype_lower($text); }
}
if (!function_exists('ctype_print')) {
    function ctype_print(mixed $text): bool { return p\Ctype::ctype_print($text); }
}
if (!function_exists('ctype_punct')) {
    function ctype_punct(mixed $text): bool { return p\Ctype::ctype_punct($text); }
}
if (!function_exists('ctype_space')) {
    function ctype_space(mixed $text): bool { return p\Ctype::ctype_space($text); }
}
if (!function_exists('ctype_upper')) {
    function ctype_upper(mixed $text): bool { return p\Ctype::ctype_upper($text); }
}
if (!function_exists('ctype_xdigit')) {
    function ctype_xdigit(mixed $text): bool { return p\Ctype::ctype_xdigit($text); }
}

if (!function_exists('ctype_lower')) {
    function ctype_lower($text) { return p\Ctype::ctype_lower($text); }
}
if (!function_exists('ctype_print')) {
    function ctype_print($text) { return p\Ctype::ctype_print($text); }
}
if (!function_exists('ctype_punct')) {
    function ctype_punct($text) { return p\Ctype::ctype_punct($text); }
}
if (!function_exists('ctype_space')) {
    function ctype_space($text) { return p\Ctype::ctype_space($text); }
}
if (!function_exists('ctype_upper')) {
    function ctype_upper($text) { return p\Ctype::ctype_upper($text); }
}
if (!function_exists('ctype_xdigit')) {
    function ctype_xdigit($text) { return p\Ctype::ctype_xdigit($text); }
}