PHP: error_log();

[Raketenlogbuchschreiber]

Bevor gemeckert wird:

ini_set( 'error_log', '/tmp/php-error.log' );
user_error( 'Huch! Was passiert', E_USER_Notice );

kenne ich natürlich. Einen Ersatz für Logrotate braucht es natürlich trotzdem.

Hier ein unvollständiger Ansatz zum Testen:

<?php

class phpLogger {
	var $logDir = '/tmp';
	var $logName = '404.log';
	
	var $maxFileSize = 60; #zum Testen
	#var $maxFileSize = 10485760; #10MB

	var $maxOldLogs  = 3;
	var $logStyle    = false; # false: error_log(text) / E_USER_NOTICE ... E_USER_ERROR
	var $logFile = false;

	function __construct() {
		
		if ( ! is_writable( $this -> logDir ) ) {
			trigger_error( 'Das Verzeichnis "' . $this -> logDir . '" existiert nicht.', E_USER_WARNING );
			$this -> enabled = false;
			return false;
		}
		if ( ! is_writable( $this -> logDir ) ) {
			trigger_error( 'Das Verzeichnis "' . $this -> logDir . '"ist nicht beschreibbar.', E_USER_WARNING );
			$this -> enabled = false;
			return false;
		}
		
		$this -> logFile = $this -> logDir . '/' . $this -> logName;
		if ( 
			     is_file ( $this -> logFile )
			and filesize ( $this -> logFile ) >= $this -> maxFileSize
		) {
				if ( 0 == $this -> maxOldLogs ) {
						file_put_contents( $this -> logFile, '' );
						return true;
				} else {
					$f = $this -> logFile . '.' . ( $this -> maxOldLogs ) . 'gz';
					if ( is_file ( $f ) ) { unlink( $f ); }
				}
				if ( 0 < $this -> maxOldLogs ) {
					for ( $i = $this -> maxOldLogs -1 ; $i > 0; $i-- ) {
						if ( $i > 1 ) {
							$o = $this -> logFile . '.' . strval( $i - 1 ) . '.gz';
						} else {
							$o = $this -> logFile . '.gz';
						}
						$n = $f = $this -> logFile . '.' . strval( $i ) . '.gz';
						if (is_file ( $o ) ) { 
							rename ( $o, $n );
						}
					}
				}
				$sys = 'gzip ' . escapeshellarg( $this -> logFile );
				exec( $sys );
				file_put_contents(  $this -> logFile, '' );
		}	
	} 

	function log( $s ) {
		
		if ( $this -> logFile ) {
			if ( NULL == $this -> logStyle ) {
				error_log (
					trim( $s ) . PHP_EOL,
					3,
					$this -> logFile
				);
			} else {
				ini_set( 'error_log', $this -> logFile );
				user_error( trim( $s ), E_USER_NOTICE );
			}
		}
	}
}

$logger = new phpLogger();
$logger -> log( 'Hallo Welt' );