Get Inner Html - Php

I have the following code: $data = file_get_contents('http://www.robotevents.com/robot-competitions/vex-robotics-competition?limit=all'); echo 'Downloaded'; $dom = new domDocument;

Solution 1:

I would recommend not using DOM to parse HTML, as it has problems with invalid HTML. INstead use regular expression

I use this class:

<?php/**
    * Class to return HTML elements from a HTML document
    * @version 0.3.1
    */classHTMLQuery{

        protected$selfClosingTags = array( 'area', 'base', 'br', 'hr', 'img', 'input', 'link', 'meta', 'param' );
        private$html;

        function__construct($html = false)
        {
            if( $html !== false )
                $this->load( $html );
        }

        /**
        * Load a HTML string
        */publicfunctionload($html)
        {
            $this->html = $html;
        }

        /**
        * Returns elements from the HTML
        */publicfunctiongetElements($element, $attribute_match = false, $value_match = false)
        {
            if( in_array( $element, $this->selfClosingTags ) )
                preg_match_all( "/<$element *(.*)*\/>/isU", $this->html, $matches );
            else
                preg_match_all( "/<$element(.*)>(.*)<\/$element>/isU", $this->html, $matches );

            if( $matches )
            {
                #Create an array of matched elements with attributes and contentforeach( $matches[0] as$key => $el )
                {
                    $current_el = array( 'name' => $element );
                    $attributes = $this->parseAttributes( $matches[1][$key] );
                    if( $attributes )
                        $current_el['attributes'] = $attributes;
                    if( $matches[2][$key] )
                        $current_el['content'] = $matches[2][$key];

                    $elements[] = $current_el;
                }

                #Return only elements with a specific attribute and or value if specifiedif( $attribute_match != false && $elements )
                {
                    foreach( $elementsas$el_key => $current_el )
                    {
                        if( $current_el['attributes'] )
                        {
                            foreach( $current_el['attributes'] as$att_name => $att_value )
                            {
                                $keep = false;
                                if( $att_name == $attribute_match )
                                {
                                    $keep = true;
                                    if( $value_match == false )
                                        break;
                                }
                                if( $value_match && ( $att_value == $value_match ) )
                                {
                                    $keep = true;
                                    break;
                                }
                                elseif( $value_match && ( $att_value != $value_match ) )
                                    $keep = false;
                            }
                            if( $keep == false )
                                unset( $elements[$el_key] );
                        }
                        elseunset( $elements[$el_key] );
                    }
                }

            }

            if( $elements )
                return array_values( $elements );
            elsereturnarray();
        }

        /**
        * Return an associateive array of all the form inputs
        */publicfunctiongetFormValues()
        {
            $inputs = $this->getElements( 'input' );
            $textareas = $this->getElements( 'textarea' );
            $buttons = $this->getElements( 'button' );
            $elements = array_merge( $inputs, $textareas, $buttons );
            if( $elements )
            {
                foreach( $elementsas$current_el )
                {
                    $attribute_name = mb_strtolower( $current_el['attributes']['name'] );

                    if( in_array( $current_el['name'], array( 'input', 'button' ) ) )
                    {
                        if( isset( $current_el['attributes']['name'] ) && isset( $current_el['attributes']['value'] ) )
                            $form_values[$attribute_name] = $current_el['attributes']['value'];
                    }
                    else
                    {
                        if( isset( $current_el['attributes']['name'] ) && isset( $current_el['content'] ) )
                            $form_values[$attribute_name] = $current_el['content'];
                    }
                }
            }

            return$form_values;
        }

        /**
        * Parses attributes into an array
        */privatefunctionparseAttributes($str)
        {
            $str = trim( rtrim( trim( $str ), '/' ) );
            if( $str )
            {
                preg_match_all( "/([^ =]+)\s*=\s*[\"'“”]{0,1}([^\"'“”]*)[\"'“”]{0,1}/i", $str, $matches );
                if( $matches[1] )
                {
                    foreach( $matches[1] as$key => $att )
                    {
                        $attribute_name = mb_strtolower( $att );
                        $attributes[$attribute_name] = $matches[2][$key];
                    }
                }
            }

            return$attributes;
        }

    }

?>

Usage is:

$c = new HTMLQuery();
$x = $c->getElements( 'tr' );
print_r( $x );