我试图创建一个类来帮助搜索引擎优化并将谷歌API与实际结果进行比较
类：
<?php
class true_seo {
public $string, $amount;
private $arr;
public function __construct(){}
public function set_g_key( $key ) {
$this->g_key = $key;
}
public function set_phrase( $string ){
if( is_string ( $string ) ) {
$string = array( $string );
}
if( is_array ( $string ) ) {
$this->phrases = $string;
}else{
Throw new exception("incorect input for phrase, string or array");
}
}
public function get_sites_use_spider( $amount ) {
require "simple_html_dom.php";
$main_result = array();
foreach( $this->phrases as $phrase ) {
$APIparams = array("key" => $this->g_key, "q" => $phrase, "start" => 0, "maxResults" => $amount, "filter" => true, "restrict" => "", "safeSearch" => false, "lr" => "lang_en", "ie" => "", "oe" => "");
$data = true_seo::google_search_api( $APIparams, 'http://www.google.co.uk/search', false );
new simple_html_dom();
$html = str_get_html( $data );
$result = array();
foreach( $html->find('li.g h3 a') as $g ) {
$data = $g->parent()->nextSibling();
$other = $data->find('span a');
$x = 0;
foreach( $other as $d ) {
( $x == 0 ? $cache = $d->href : $simular = $d->href );
$x++;
}
$excess_span = $data->find('span',0)->outertext;
if( isset( $data->find('div',0)->tag ) ) {
$excess_div = $data->find('div',0)->outertext;
$title = str_replace( array( $excess_span, $excess_div, '<em>', '</em>', '<br>', '<b>', '</b>' ), array( '','','','','','','' ), $data->outertext );
}else{
$title = str_replace( array( $excess_span, '<em>', '</em>', '<br>', '<b>', '</b>' ), array( '','','','','','' ), $data->outertext );
}
$result[] = array( 'link' => $g->href, 'title' => strip_tags( $title ), 'cache' => $cache, 'simular' => 'http://www.google.co.uk' . $simular );
}
$main_result[$phrase] = $result;
$html->clear();
}
$this->non_api_data = $main_result;
}
public function get_sites_use_api( $amount ) {
$arr = array();
foreach( $this->phrases as $phrase ) {
if( $amount > 4 ) {
$times = $amount / 4;
}else{
$times = 1;
}
$arg = array();
for($x = 0; $x < $times; $x++ ) {
$APIparams = array("key" => $this->g_key, "q" => $phrase, "start" => ($x * 4), "maxResults" => 4, "filter" => true, "restrict" => "", "safeSearch" => false, "lr" => "lang_en", "ie" => "", "oe" => "");
if( $data = true_seo::google_search_api( $APIparams, 'http://ajax.googleapis.com/ajax/services/search/web' ) ) {
$arg = array_merge($arg, $data->responseData->results);
}else{
Throw new exception("Request error: no results returned from Google.");
}
}
$arg = array_reverse( $arg );
$remove = $amount % 4;
if( $amount < 4 ) {
$remove = 4 - $amount;
}
for( $x=0; $x < $remove; $x++ ) {
unset( $arg[$x] );
}
$arg = array_reverse( $arg );
foreach( $arg as $g ) {
$result = array( 'link' => $g->url, 'title' => strip_tags( $g->content ), 'cache' => $g->cacheUrl, 'simular' => 'na' );
$arr[$phrase][] = $result;
}
}
$this->api_data = $arr;
}
public function google_search_api($args, $url, $api = true){
if ( !array_key_exists('v', $args) ) {
$args['v'] = '1.0';
}
$url .= '?'.http_build_query($args, '', '&');
if( $result = @file_get_contents($url) ) {
if( $api == true ) {
return json_decode($result);
}else{
return $result;
}
}else{
Throw new exception("No data returned from url: $url");
}
}
public function set_get_actual( $string ) {
$this->actual->name = $string;
$this->actual->data = file_get_contents( $string );
}
public function get_actual_description(){
require_once "simple_html_dom.php";
new simple_html_dom();
$html = str_get_html( $this->actual->data );
return $html->find('head meta[name=description]',0)->content;
$html->clear();
}
}
?>
呼叫：
<?php
try{
require "./classes/class_true_seo.php";
$seo = new true_seo();
$seo->set_g_key('ABQIAAAAsWzmZ4RXdIk0a-LqpqKCBRSl_WmKnmsXGmN0kkjN2wkrfEOY-hT2sL-_x5v4NtT3DgElKNsR7FDJDQ');
$seo->set_phrase(array("web design mansfield"));
$seo->get_sites_use_api(10);
ob_start();
foreach( $seo->api_data as $key => $phrase_return ){
echo "<h2>" . $key . "</h2>";
foreach( $phrase_return as $rank => $results ){
$seo->set_get_actual( $results['link'] );
echo "<p class=\"link-head\"><strong>#" . ( $rank + 1 ) . "</strong> <a href=\"" . $results['link'] . "\">" . $results['link'] . "</a></p>";
echo "<p>" . $results['title'] . "</p>";
#echo "<p>" . $seo->get_actual_title() . "</p>";
echo "<p>" . $seo->get_actual_description() . "</p>";
#echo "<p>" . $seo->get_actual_amount_of('p') . "</p>";
#echo "<p>" . $seo->get_actual_amount_of('h2') . "</p>";
}
}
$api_return = ob_get_clean();
ob_start();
$seo->get_sites_use_spider(10);
foreach( $seo->non_api_data as $key => $phrase_return ){
echo "<h2>" . $key . "</h2>";
foreach( $phrase_return as $rank => $results ){
echo "<p class=\"link-head\"><strong>#" . ( $rank + 1 ) . "</strong> <a href=\"" . $results['link'] . "\">" . $results['link'] . "</a></p>";
echo "<p>" . $results['title'] . "</p>";
}
}
$non_api_return = ob_get_clean();
}catch(Exception $err){
$error = $err->getMessage();
}
?>
我的问题是我一直收到错误：
Fatal error: Cannot redeclare file_get_html() (previously declared in C:\wamp\www\seo\classes\simple_html_dom.php:37) in C:\wamp\www\seo\classes\simple_html_dom.php on line 41
这是由于类get_actual_description（）中的最后一个函数。
任何人都可以看到我翘起来的地方吗？
的问候，
菲尔
答案 0 :(得分：4)
在函数
之外放置require_once“simple_html_dom.php”