How to achieve grouping and classification statistical chart effects through PHP and Vue.js

How to achieve grouping and classification statistical chart effects through PHP and Vue.js

Introduction:
Statistical charts are one of the important means of data visualization. It can help us understand the data more intuitively. In this article, we will introduce how to use PHP and Vue.js to achieve grouping and classification statistical chart effects. Also, we provide code examples for better understanding.

Step 1: Prepare data
First, we need to prepare some data for statistics. In this example, we will take sales data as an example. The data structure is as follows:

$data = [
    ['group' => 'A', 'category' => 'cat1', 'amount' => 100],
    ['group' => 'A', 'category' => 'cat1', 'amount' => 150],
    ['group' => 'A', 'category' => 'cat2', 'amount' => 200],
    ['group' => 'B', 'category' => 'cat2', 'amount' => 300],
    ['group' => 'B', 'category' => 'cat1', 'amount' => 180],
    ['group' => 'C', 'category' => 'cat1', 'amount' => 120],
    ['group' => 'C', 'category' => 'cat2', 'amount' => 250],
];

Step 2: Back-end processing data
Next, we need to process the data to facilitate the front-end Chart display.

PHP code example:

$groupedData = array();

foreach($data as $row) {
    $group = $row['group'];
    $category = $row['category'];
    $amount = $row['amount'];

    if(!isset($groupedData[$group])) {
        $groupedData[$group] = array();
    }

    if(!isset($groupedData[$group][$category])) {
        $groupedData[$group][$category] = 0;
    }

    $groupedData[$group][$category] += $amount;
}

echo json_encode($groupedData);

Step 3: Front-end display
Now that we have processed the back-end data, we will use Vue.js for front-end display.

HTML code example:

<div id="app">
    <div v-for="(groupData, group) in groupedData" :key="group">
        <h3 id="group">{{ group }}</h3>
        <table>
            <tr v-for="(amount, category) in groupData" :key="category">
                <td>{{ category }}</td>
                <td>{{ amount }}</td>
            </tr>
        </table>
    </div>
</div>

Vue.js code example:

new Vue({
    el: '#app',
    data: {
        groupedData: [],
    },
    mounted() {
        axios.get('/api/data.php')
            .then(response => {
                this.groupedData = response.data;
            })
            .catch(error => {
                console.log(error);
            });
    },
});

Through the above code example, we implement the method based on group and categoryFunction for grouping and classifying data. In the code displayed on the front end, we use the v-for instruction of Vue.js to loop through the data and display the data through the interpolation expression {{ }}.

Summary:
In this article, we introduced how to use PHP and Vue.js to achieve grouping and classification statistical chart effects. We first process the data through PHP, and then use Vue.js for front-end display. I hope this article can help everyone understand and master how to achieve statistical chart effects.

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