PHP server file log function

PHP file log function 

<?php
w_log('123','test/');
w_log(array('a'=>1),'test/');
function w_log($data, $path = 'log/') {
    $root_path=str_replace('\\', '/', dirname(dirname(__FILE__)));//改成你自己目录
    $dir = $root_path . '/log/' . $path;
    if (!is_dir($dir)) {
        mkdir($dir, 0777, true);
    }
    $log_file = $dir . date('Ymd', time()) . '.txt';
    file_put_contents($log_file, "\r\n", FILE_APPEND);

    if (is_array($data)) {
        $data = json_encode($data); // 将数组转换为JSON格式的字符串
    }

    file_put_contents($log_file, "/".date("Y-m-d H:i:s")."--".$data, FILE_APPEND);
}

The significance of the PHP file log is to record important information such as the running status of the application, error messages, and user behavior. The following are several important meanings of PHP file logging:

1. Debugging and troubleshooting: The PHP file log can record the running process of the application, including variable values, function calls, etc., which is convenient for developers to debug and troubleshoot. When an exception or error occurs in the application, the developer can locate the problem by viewing the log file.
2. Performance optimization: By recording PHP file logs, developers can analyze application performance bottlenecks and time-consuming operations for optimization. By viewing the log files, you can find code blocks that take a long time to execute, and then optimize the algorithm or use cache to improve the performance of the application.
3. Security monitoring: PHP file logs can record user operations, including login, logout, access rights, etc., so as to monitor system security. By analyzing log files, security events such as abnormal logins and malicious attacks can be found, and corresponding measures can be taken to prevent and repair them.
4. Statistical analysis: By recording user behavior and operation logs, statistical analysis can be performed to understand user needs, preferences, and behavioral characteristics. These data can help developers optimize product design and improve user experience, thereby enhancing product quality and competitiveness.
5. Legal compliance: The laws and regulations of some industries or countries require the recording and archiving of user behavior and operations. By recording PHP file logs, the requirements of relevant laws and regulations can be met, and the basis for filing and evidence collection can be provided. To sum up, the significance of PHP file logs is reflected in debugging and troubleshooting, performance optimization, security monitoring, statistical analysis, and legal compliance, and plays an important role in application development, operation and maintenance, and security.