selector.php

<?php
require "selector.php";
function getGasolinePrice()
{
    try {
        $curl = curl_init();
        curl_setopt_array($curl, array(
            CURLOPT_URL => 'http://www.qiyoujiage.com/chongqing.shtml',
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_ENCODING 
 
=> '',
            CURLOPT_MAXREDIRS => 10,
            CURLOPT_TIMEOUT => 0,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
            CURLOPT_CUSTOMREQUEST => 'GET',
        ));
        $jieguo = curl_exec($curl);
        curl_close(
 
$curl);
    } catch (Exception $e) {
        throw new RuntimeException("請求失敗");
    }
    $select=new selector();
    $regx = "//div[@id='youjia']";
    $con=$select->select($jieguo,$regx);
    $con = $select->select($con, "//dl");
    if (empty($con)) {
        return [];
    }
    $qiyou = [];
    
 
foreach ($con as $k=>$v) {
        $qiyou[$k]['type']=$select->select($v, "//dt");
        $qiyou[$k]['per_price']=$select->select($v, "//dd");
    }
    return $qiyou;
}

echo json_encode(getGasolinePrice());

/**
輸出:
[
    {
        "type":"重慶92#汽油",
        "per_price":"7.54"
    },
    {
        "type":"重慶95#汽油",
        "per_price":"7.97"
    },
    {
        "type":"重慶98#汽油",
        "per_price":"8.98"
    },
    {
        "type":"重慶0#柴油",
        "per_price":"7.20"
    }
]
*/