benchMark.php

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  1. benchMark.php

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<?php
    /*
        Function benchMark
        - serverside benchmark
        - short_summary will also clean up the global $benchMark
    */
    function benchMark($action, $name = FALSE, $show = FALSE) {
        global $benchMarks;
        $timeNow    = microtime(true);
        $timeDiff   = 0;
        $memoryNow  = memory_get_usage();
        $memoryDiff = 0;
        
        switch($action) {
            case "start": // start benchmark    
                $benchMarks[$name]["start_time"] = $timeNow;
                $benchMarks[$name]["start_memory"] = $memoryNow;
                return (!$show)? TRUE : "Benchmark ".$name." (".$action.") - Time Expired: ".round($timeNow,3)." seconds, Memory Usage: ".convertBytes($memoryNow)."\r\n";
            break;
            case "status": // show status of benchmark til now without stopping it
                $timeDiff = ($timeNow - $benchMarks[$name]["start_time"]);
                $memoryDiff = ($memoryNow - $benchMarks[$name]["start_memory"]);
                return (!$show)? TRUE : "Benchmark ".$name." (".$action.") -  Time Expired: ".round($timeDiff,3)." seconds, Memory Usage: ".convertBytes($memoryDiff)."\r\n";
            break;
            case "stop": // stop the benchmark
                $benchMarks[$name]["end_time"] = $timeNow;
                $benchMarks[$name]["end_memory"] = $memoryNow;
                $timeDiff = ($benchMarks[$name]["end_time"] - $benchMarks[$name]["start_time"]);
                $memoryDiff = ($benchMarks[$name]["end_memory"] - $benchMarks[$name]["start_memory"]);
                return (!$show)? TRUE : "Benchmark ".$name." (".$action.") - Time Expired: ".round($timeDiff,3)." seconds, Memory Usage: ".convertBytes($memoryDiff)."\r\n";
            break;
            case 'short_summary': // calculate benchmark totals, all benchmark have to be stopted
            case 'long_summary': // show each benchmark (separate), all benchmark have to be stopted
            default:    
                $returnValue = '';
                foreach($benchMarks AS $key => $valueArray) {                
                    /* check if items are set */
                    if(!isset($valueArray["start_time"])) {
                        return 'Benchmark start time not set for '.$key."\r\n";
                    } elseif(!isset($valueArray["end_time"])) {
                        return 'Benchmark end time not set for '.$key."\r\n";
                    } elseif(!isset($valueArray["start_memory"])) {
                        return 'Benchmark start memory not set for '.$key."\r\n";
                    } elseif(!isset($valueArray["end_memory"])) {
                        return 'Benchmark end memory not set for '.$key."\r\n";
                    }
                    if($action == 'short_summary') {
                        $timeDiff += ($valueArray["end_time"] - $valueArray["start_time"]);
                        $memoryDiff += ($valueArray["end_memory"] - $valueArray["start_memory"]);
                    } elseif($action == 'long_summary') {
                        $timeDiff = ($valueArray["end_time"] - $valueArray["start_time"]);
                        $memoryDiff = ($valueArray["end_memory"] - $valueArray["start_memory"]);
                        $returnValue .= "Benchmark ".$key." (".$action.") - Time Expired: ".round($timeDiff,3)." seconds, Memory Usage: ".convertBytes($memoryDiff)."\r\n";
                    } else {
                        return 'Benchmark Error: missing action!'."\r\n";
                    }
                }
                if($action == 'short_summary') {
                    $benchMarks = ''; // little clean up
                    return "Benchmark ".$action." - Time Expired: ".round($timeDiff,3)." seconds, Memory usage: ".convertBytes($memoryDiff)."\r\n";
                } elseif($action == 'long_summary') {
                    return $returnValue;
                } else {
                    return 'Benchmark Error!'."\r\n";
                }
            break;
        }    
    }
    /*
        Function convertBytes
        - bytes to the highest storage capacity type)
    */
    function convertBytes($size) {
        $unit=array('b','kb','mb','gb','tb','pb');
        return @round($size/pow(1024,($i=floor(log($size,1024)))),2).' '.$unit[$i];
    }
?>

 
 

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