Online PHP editor | perf for 5WvEg

@ 2013-06-01T14:19:55Z

<?php
$start = microtime(true);  
// keep calling microtime for about 3 seconds  
while(microtime(true) - $start < 10) {  
  
}  
  
$data = getrusage();  
echo "User time: ".  
    ($data['ru_utime.tv_sec'] +  
    $data['ru_utime.tv_usec'] / 1000000);  
echo "System time: ".  
    ($data['ru_stime.tv_sec'] +  
    $data['ru_stime.tv_usec'] / 1000000);  
  
/* prints 
User time: 1.088171 
System time: 1.675315 
*/  
echo "Initial: ".memory_get_usage()." bytes \n";  
/* prints 
Initial: 361400 bytes 
*/  

// let's use up some memory  
for ($i = 0; $i < 100000; $i++) {  
    $array[$i] = md5($i);  
}  
  
// let's remove half of the array  
for ($i = 0; $i < 100000; $i++) {  
    unset($array[$i]);  
}  
  
echo "Final: ".memory_get_usage()." bytes \n";  
/* prints 
Final: 885912 bytes 
*/  
  
echo "Peak: ".memory_get_peak_usage()." bytes \n";  
/* prints 
Peak: 13687072 bytes 
*/

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
5.4.15	0.020	2.397	18.96
5.4.14	0.043	2.267	16.24
5.4.13	0.017	2.387	16.26
5.4.12	0.033	2.183	16.15
5.4.11	0.030	2.240	16.35
5.4.10	0.013	2.393	16.39
5.4.9	0.007	2.460	16.42
5.4.8	0.017	2.447	16.25
5.4.7	0.017	2.413	16.35
5.4.6	0.023	2.427	16.29
5.4.5	0.017	2.420	16.36
5.4.4	0.017	2.397	16.35
5.4.3	0.013	2.447	16.41
5.4.2	0.013	2.390	16.34
5.4.1	0.023	2.413	16.36
5.4.0	0.020	2.330	15.73
5.3.25	0.033	2.347	14.22
5.3.24	0.023	2.320	14.24
5.3.23	0.023	2.423	14.34
5.3.22	0.027	2.337	14.33
5.3.21	0.020	2.350	14.30
5.3.20	0.020	2.323	14.31
5.3.19	0.023	2.387	14.21
5.3.18	0.017	2.413	14.34
5.3.17	0.017	2.373	14.33
5.3.16	0.027	2.407	14.35
5.3.15	0.027	2.410	14.20
5.3.14	0.020	2.437	14.34
5.3.13	0.040	2.390	14.31
5.3.12	0.030	2.400	14.28
5.3.11	0.017	2.343	14.23
5.3.10	0.007	2.403	13.80
5.3.9	0.033	2.343	13.79
5.3.8	0.023	2.410	13.59
5.3.7	0.023	2.367	13.63
5.3.6	0.030	2.333	13.67
5.3.5	0.013	2.363	13.66
5.3.4	0.010	2.393	13.56
5.3.3	0.033	2.330	13.54
5.3.2	0.030	2.383	13.26
5.3.1	0.023	2.380	13.29
5.3.0	0.023	2.420	13.33

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