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test.php
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test.php
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<?php
/**
* Find the most common 3-page sequence from the corresponding Apache log.
*
* example `php test.php Apache.log`
*
* @author Seth M.
*
* Length: 1.5 hours
* Issues: mostly syntax issues. Formats for calling functions, adding to arrays
*/
class Test {
private $userPaths = [];
private $pathCount = [];
private $fileLineCount = 0;
private $lessThanThree = 0;
/**
* Formated output max path count
*
* @return {bool}
*/
function printPathCount() {
$topCount = 0;
arsort($this->pathCount);
echo "\nTop 3 Page Sequence:\n";
foreach($this->pathCount as $key => $value) {
if($topCount === 0) {
$topCount = $value;
} else if ($topCount !== $value) {
return true;
}
$pages= explode("::", $key);
echo "\t - Occurred {$value} times.\n";
echo "\t\t - {$pages[0]}\n";
echo "\t\t - {$pages[1]}\n";
echo "\t\t - {$pages[2]}\n\n";
}
return false; //Should only ever get here if max path is 1 or there are no records
}
/**
* Extra checking to validate output
*
* @return {bool}
*/
function runTest() {
$count = 0;
foreach($this->pathCount as $key => $value) {
$count += $value;
}
if(($this->lessThanThree + $count) !== $this->fileLineCount) {
echo "\nError, expected {$this->fileLineCount } Lines, "+
"received {$count} lines with three pages and "+
"{$this->lessThanThree} lines with less than 3 pages\n";
return false;
}
return true;
}
/**
* Store user path and update path count
*
* @param {String} ip
* @param {String} referer
*/
function storeData($ip, $referer) {
$this->userPaths[$ip][] = $referer;
if(count($this->userPaths[$ip]) === 3) {
//store value
$ident = implode('::',$this->userPaths[$ip]);
if(!isset($this->pathCount[$ident])) {
$tmp = array($ident => 1);
$this->pathCount = array_merge($this->pathCount, $tmp);
} else {
$this->pathCount[$ident] += 1;
}
if($this->pathCount[$ident] < 1) {
echo "Error:: {$ident} should not be less than 1";
}
array_shift($this->userPaths[$ip]);//Missing [$ip]
} else {
//echo "Not three pages in sequence yet";
$this->lessThanThree ++;
}
}
/**
* Open file and parse through lines
*
* @Param {string} logFile
*/
function loadFile($logFile) {
//http://www.startupcto.com/server-tech/apache/importing-apache-httpd-logs-into-mysql
$pattern = '/^(\S+) (\S+) (\S+) \[([^:]+):(\d+:\d+:\d+) ([^\]]+)\] "(\S+) (.+?) (\S+)" (\S+) (\S+) "([^"]+)" "([^"]+)"$/';
$handle = @fopen('./'.$logFile, "r");
if ($handle) {
while (($buffer = fgets($handle, 4096)) !== false) {
$this->fileLineCount ++;
if (preg_match($pattern, $buffer, $m)) {
$ip = $m[1];
$referer = $m[8];
$this->storeData($ip, $referer);
} else {
echo "\nunable to pregmatch\n";
}
}
fclose($handle);
}
}
}
$test = new Test;
$test->loadFile($argv[1]);
$test->printPathCount();
$test->runTest();
?>