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  • tidyNode::isHtml()

    (PHP 5, PHP 7)

    检查节点是否是HTML文档的一部分

    说明

    publictidyNode::isHtml(void): bool

    返回值

    Returns TRUE if the node is part of a HTML document,FALSE otherwise.

    范例

    Extract HTML code from a mixed HTML document

    <?php
    $html = <<< HTML
    <html><head>
    <?php echo '<title>title</title>'; ?>
    <# 
      /* JSTE code */
      alert('Hello World'); 
    #>
    </head>
    <body>
    <?php
      // PHP code
      echo 'hello world!';
    ?>
    <%
      /* ASP code */
      response.write("Hello World!")
    %>
    <!-- Comments -->
    Hello World
    </body></html>
    Outside HTML
    HTML;
    $tidy = tidy_parse_string($html);
    $num = 0;
    get_nodes($tidy->html());
    function get_nodes($node) {
        // check if the current node is of requested type
        if($node->isHtml()) {
            echo "\n\n# html node #" . ++$GLOBALS['num'] . "\n";
            echo $node->value;
        }
        // check if the current node has childrens
        if($node->hasChildren()) {
            foreach($node->child as $child) {
                get_nodes($child);
            }
        }
    }
    ?>
    

    以上例程会输出:

    # html node #1
    <html>
    <head>
    <?php echo '<title>title</title>'; ?><# 
      /* JSTE code */
      alert('Hello World'); 
    #>
    <title></title>
    </head>
    <body>
    <?php
      // PHP code
      echo 'hello world!';
    ?><%
      /* ASP code */
      response.write("Hello World!")
    %><!-- Comments -->
    Hello WorldOutside HTML
    </body>
    </html>
    # html node #2
    <head>
    <?php echo '<title>title</title>'; ?><# 
      /* JSTE code */
      alert('Hello World'); 
    #>
    <title></title>
    </head>
    
    # html node #3
    <?php echo '<title>title</title>'; ?>
    # html node #4
    <# 
      /* JSTE code */
      alert('Hello World'); 
    #>
    # html node #5
    <title></title>
    
    # html node #6
    <body>
    <?php
      // PHP code
      echo 'hello world!';
    ?><%
      /* ASP code */
      response.write("Hello World!")
    %><!-- Comments -->
    Hello WorldOutside HTML
    </body>
    
    # html node #7
    <?php
      // PHP code
      echo 'hello world!';
    ?>
    # html node #8
    <%
      /* ASP code */
      response.write("Hello World!")
    %>
    # html node #9
    <!-- Comments -->
    
    # html node #10
    Hello World
    # html node #11
    Outside HTML