How to use Google Places API to process geographical location information in PHP development-PHP Tutorial-php.cn

How to use Google Places API to process geographical location information in PHP development

王林

Release： 2023-06-25 08:46:02

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With the development of mobile Internet technology, location services are becoming more and more important in our lives. In many projects, developers need to implement the processing of geographical location information. At this time, the Google Places API has become a good choice. This article will introduce how to use Google Places API to process geographical location information in PHP development.

1. Preparation
Before you start using the Google Places API, you need to obtain the API Key. Create a new project in Google Cloud Platform, enable the Places API, and then obtain the API Key in the API Manager.

2. Use Google Places API
Google Places API provides many functions, including automatic address completion, location retrieval, and detailed query. Here we'll explain how to use address autocomplete and location search.

Address auto-completion
Using address auto-completion can facilitate users to enter addresses and avoid incorrect addresses. The following is the code for using Google Places API to implement address auto-completion:

<!DOCTYPE html>
<html>
<head>
  <title>Google Places API Autocomplete</title>
  <meta charset="utf-8">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places&callback=initAutocomplete"></script>
  <style>
    #autocomplete-container {
      position: relative;
      width: 300px;
      margin: 0 auto;
    }

    #autocomplete-box {
      width: 100%;
      box-sizing: border-box;
      margin-top: 10px;
      padding: 10px;
      border: 1px solid #dadada;
      border-radius: 5px;
      font-size: 14px;
    }
  </style>
  <script>
    function initAutocomplete() {
      var input = document.getElementById('autocomplete-box');
      var autocomplete = new google.maps.places.Autocomplete(input);
    }
  </script>
</head>
<body>
  <div id="autocomplete-container">
    <input id="autocomplete-box" type="text" placeholder="请输入地址">
  </div>
</body>
</html>

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In the above code, you need to replace YOUR_API_KEY with your API Key. When a user enters an address, the Google Places API automatically completes the address and displays matching options in a drop-down box.

Location search
Location search can search for nearby places based on keywords. The following is the code for using Google Places API to implement location retrieval:

<?php
$apiKey = "YOUR_API_KEY";
$coordinates = "40.712776,-74.005974"; //纬度，经度
$radius = "10000"; //单位为米
$keyword = "餐厅";
$url = "https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=".$coordinates."&radius=".$radius."&keyword=".urlencode($keyword)."&key=".$apiKey;

$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($curl);
curl_close($curl);

$json = json_decode($result, true);
if ($json['status'] == 'OK') {
  foreach ($json['results'] as $result) {
    echo $result['name']." ".$result['vicinity']."<br>";
  }
} else {
  echo "Error: ".$json['status'];
}
?>

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In the above code, you need to replace YOUR_API_KEY with your API Key. We can query different locations by changing the values of $coordinates, $radius and $keyword.

3. Summary
This article introduces how to use Google Places API to process geographical location information in PHP development. By using address auto-completion and location search functions, we can easily obtain geographic location information. If you want to know more about the functions of Google Places API, you can check the official documentation.

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