3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo "Only strings: ", ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test','this is a test','this is a test','this is a test','this is a test','this is a test'; $time1 = microtime(1); ob_end_clean(); echo "comma=", round($c=($time1-$time0)*1000, 3), "ms"; ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test'.'this is a test'.'this is a test'.'this is a test'.'this is a test'.'this is a test'; $time1 = microtime(1); ob_end_clean(); echo ", dot=", round($d=($time1-$time0)*1000, 3), "ms"; echo ', delta= ', round(($d - $c) * 100 / $d, 1), "%\n"; echo "With vars: ", ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test',$i,'this is a test',$i,'this is a test',$i; $time1 = microtime(1); ob_end_clean(); echo "comma=", round($c=($time1-$time0)*1000, 3), "ms"; ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test'.$i.'this is a test'.$i.'this is a test'.$i; $time1 = microtime(1); ob_end_clean(); echo ", dot=", round($d=($time1-$time0)*1000, 3), "ms"; echo ', delta= ', round(($d - $c) * 100 / $d, 1), "%\n"; echo "With array: "; $A = array('a' => 'A', 'b' => 'B', 'c' => 'C'); ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test',$A['a'],'this is a test',$A['b'],'this is a test',$A['c']; $time1 = microtime(1); ob_end_clean(); echo "comma=", round($c=($time1-$time0)*1000, 3), "ms"; ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test'.$A['a'].'this is a test'.$A['b'].'this is a test'.$A['c']; $time1 = microtime(1); ob_end_clean(); echo ", dot=", round($d=($time1-$time0)*1000, 3), "ms"; echo ', delta= ', round(($d - $c) * 100 / $d, 1), "%\n"; echo "With array & function: "; $A = array('a' => 'A', 'b' => 'B', 'c' => 'C'); ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test',ss($A['a']),'this is a test',ss($A['b']),'this is a test',ss($A['c']); $time1 = microtime(1); ob_end_clean(); echo "comma=", round($c=($time1-$time0)*1000, 3), "ms"; ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test'.ss($A['a']).'this is a test'.ss($A['b']).'this is a test'.ss($A['c']); $time1 = microtime(1); ob_end_clean(); echo ", dot=", round($d=($time1-$time0)*1000, 3), "ms"; echo ', delta= ', round(($d - $c) * 100 / $d, 1), "%\n"; function ss($s) { return substr($s, 0); }

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).

VersionSystem time (s)User time (s)Memory (MiB)
7.2.00.0170.16633.47
7.1.70.0100.14630.94
7.1.60.0230.20831.41
7.1.50.0200.22531.06
7.1.00.0100.30336.22
7.0.200.0030.19130.88
7.0.140.0170.27735.92
7.0.100.1400.26335.47
7.0.90.1170.28335.30
7.0.80.1070.24035.32
7.0.70.0900.28735.31
7.0.60.1800.27035.27
7.0.50.0970.28335.73
7.0.40.0700.28732.01
7.0.30.1170.31032.07
7.0.20.1870.29031.98
7.0.10.1330.27332.05
7.0.00.0870.33032.09
5.6.280.0030.41729.75
5.6.250.0100.38028.91
5.6.240.0130.43028.79
5.6.230.0070.39028.78
5.6.220.0200.38728.86
5.6.210.0100.33028.87
5.6.200.0200.37329.30
5.6.190.0130.34029.22
5.6.180.0200.37029.39
5.6.170.0130.44329.29
5.6.160.0330.37729.29
5.6.150.0630.433160.46
5.6.140.0230.38329.34
5.6.130.0170.38029.26
5.6.120.0200.35329.28
5.6.110.0000.36329.41
5.6.100.0170.38029.21
5.6.90.0230.43329.32
5.6.80.0200.37328.69
5.6.70.0130.40728.77
5.6.60.0170.38328.66
5.6.50.0130.40028.64
5.6.40.0170.36328.57
5.6.30.0230.41028.67
5.6.20.0100.38028.68
5.6.10.0000.36728.64
5.6.00.0170.35728.68
5.5.380.0100.40728.83
5.5.370.0170.39328.63
5.5.360.0170.40328.66
5.5.350.0230.41028.61
5.5.340.0200.41729.11
5.5.330.0070.42329.09
5.5.320.0270.39729.09
5.5.310.0100.42729.17
5.5.300.0100.39329.14
5.5.290.0200.39029.16
5.5.280.0170.38329.07
5.5.270.0070.40329.07
5.5.260.0230.38329.13
5.5.250.0100.41328.90
5.5.240.0170.39028.58
5.5.230.0130.38728.46
5.5.220.0070.40328.39
5.5.210.0030.39028.44
5.5.200.0170.40328.52
5.5.190.0130.40028.53
5.5.180.0170.39328.56
5.5.160.0070.32728.55
5.5.150.0170.38728.51
5.5.140.0100.38028.36
5.5.130.0070.38328.46
5.5.120.0130.32728.51
5.5.110.0000.28328.49
5.5.100.0170.32028.30
5.5.90.0070.28728.35
5.5.80.0100.31328.29
5.5.70.0000.32728.34
5.5.60.0230.31028.40
5.5.50.0100.39728.22
5.5.40.0100.45328.43
5.5.30.0030.33328.42
5.5.20.0130.37028.21
5.5.10.0100.40728.31
5.5.00.0030.37728.24
5.4.450.0230.41327.69
5.4.440.0200.37327.72
5.4.430.0270.38027.49
5.4.420.0130.37027.65
5.4.410.0400.37327.32
5.4.400.0530.437158.37
5.4.390.0130.39027.38
5.4.380.0070.38727.34
5.4.370.0100.38727.28
5.4.360.0100.36727.24
5.4.350.0100.38327.23
5.4.340.0130.37727.16
5.4.320.0100.38027.27
5.4.310.0070.38027.39
5.4.300.0200.39727.12
5.4.290.0070.37727.31
5.4.280.0200.38727.18
5.4.270.0100.32727.36
5.4.260.0130.32327.12
5.4.250.0070.27027.42
5.4.240.0070.31727.15
5.4.230.0130.28727.32
5.4.220.0070.28027.32
5.4.210.0100.41727.36
5.4.200.0130.38727.42
5.4.190.0200.38027.37
5.4.180.0100.40027.42
5.4.170.0100.40027.13
5.4.160.0030.40727.20
5.4.150.0170.37727.28
5.4.140.0170.40024.69
5.4.130.0100.42324.60
5.4.120.0070.38324.53
5.4.110.0070.40024.60
5.4.100.0200.36724.71
5.4.90.0070.36724.68
5.4.80.0100.35024.63
5.4.70.0200.35324.74
5.4.60.0130.41324.73
5.4.50.0070.33724.57
5.4.40.0030.37024.72
5.4.30.0130.42024.75
5.4.20.0130.36724.68
5.4.10.0130.38324.72
5.4.00.0100.42024.11
5.3.290.0100.34722.80
5.3.280.0130.36722.87
5.3.270.0170.39022.77
5.3.260.0230.41722.76
5.3.250.0130.43322.87
5.3.240.0070.40722.88
5.3.230.0170.42722.79
5.3.220.0100.40022.83
5.3.210.0170.43722.72
5.3.200.0230.39022.72
5.3.190.0170.42322.71
5.3.180.0100.45322.70
5.3.170.0030.41322.84
5.3.160.0070.38022.71
5.3.150.0200.40322.81
5.3.140.0100.41022.83
5.3.130.0870.39722.79
5.3.120.0170.42722.79
5.3.110.0100.44722.70
5.3.100.0100.44322.22
5.3.90.0030.42022.20
5.3.80.0130.35322.24
5.3.70.0070.46022.29
5.3.60.0130.44022.27
5.3.50.0170.43021.99
5.3.40.0100.49021.98
5.3.30.0130.47322.09
5.3.20.0100.40721.89
5.3.10.0030.42721.91
5.3.00.0070.40321.79
5.2.170.0100.51319.51
5.2.160.0100.47019.57
5.2.150.0170.46719.58
5.2.140.0130.48019.58
5.2.130.0170.48719.39
5.2.120.0070.42019.51
5.2.110.0070.53319.54
5.2.100.0170.50319.42
5.2.90.0070.48019.39
5.2.80.0170.47719.37
5.2.70.0070.38719.51
5.2.60.0130.48719.48
5.2.50.0100.48719.36
5.2.40.0530.520151.31
5.2.30.0100.48019.34
5.2.20.0070.46319.27
5.2.10.0200.52319.27
5.2.00.0100.49719.15
5.1.60.0130.46017.86
5.1.50.0100.52317.95
5.1.40.0170.51718.13
5.1.30.0070.54018.42
5.1.20.0000.53318.73
5.1.10.0030.54018.11
5.1.00.0130.53018.18
5.0.50.0130.62316.55
5.0.40.1070.703251.40
5.0.30.0130.64316.33
5.0.20.0030.48016.29
5.0.10.0070.57316.12
5.0.00.0100.66716.03
4.4.90.0130.63014.05
4.4.80.0070.57314.01
4.4.70.0270.63313.89
4.4.60.0030.60314.04
4.4.50.0070.62714.04
4.4.40.0030.58313.94
4.4.30.0170.65713.88
4.4.20.0800.710247.57
4.4.10.0130.58014.09
4.4.00.0100.64714.06
4.3.110.0070.70013.93
4.3.100.0130.51013.89
4.3.90.0070.53313.90
4.3.80.0030.54013.90
4.3.70.0100.50013.95
4.3.60.0030.49713.91
4.3.50.0070.52013.86
4.3.40.0000.47013.84
4.3.30.0170.61012.63
4.3.20.0270.54312.52
4.3.10.0130.59012.61
4.3.00.0000.64712.59

preferences:
37.51 ms | 400 KiB | 5 Q