3v4l.org

run code in 300+ PHP versions simultaneously
<?php print "a" . 2; print "a".2;

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)
5.6.90.0100.06720.98
5.6.80.0070.06720.36
5.5.250.0130.04720.68
5.5.240.0000.05720.03
5.4.410.1870.03319.14
5.4.400.1800.04019.09
5.4.390.1770.03719.22
5.4.380.1830.03018.99
5.4.370.1700.04319.30
5.4.360.1770.03719.07
5.4.350.1800.03319.21
5.4.340.1800.03719.13
5.4.320.1930.03719.15
5.4.310.2170.03719.20
5.4.300.1930.04319.31
5.4.290.2030.04319.13
5.4.280.1900.04318.94
5.4.270.2000.04018.98
5.4.260.1770.04718.95
5.4.250.1900.04318.97
5.4.240.1970.04719.19
5.4.230.1670.03019.06
5.4.220.1830.04018.86
5.4.210.2030.04319.07
5.4.200.1770.04019.16
5.4.190.1670.04019.13
5.4.180.1970.04318.86
5.4.170.1730.04019.30
5.4.160.1800.03319.04
5.4.150.2100.04319.17
5.4.140.1670.04016.46
5.4.130.2100.03716.49
5.4.120.1930.04716.66
5.4.110.1830.05016.45
5.4.100.0030.06016.36
5.4.90.0170.06716.55
5.4.80.0770.04316.45
5.4.70.1930.04316.26
5.4.60.2070.04016.43
5.4.50.1930.04716.32
5.4.40.2030.03316.53
5.4.30.1970.04016.39
5.4.20.2000.04716.48
5.4.10.2030.04016.16
5.4.00.1900.04715.75
5.3.290.1700.04014.62
5.3.280.1270.04714.44
5.3.270.0170.06314.55
5.3.260.0100.06714.45
5.3.250.1270.04014.59
5.3.240.1770.03014.46
5.3.230.1800.03014.66
5.3.220.1730.03314.62
5.3.210.1930.04314.50
5.3.200.1900.04014.59
5.3.190.1900.04714.50
5.3.180.1730.04014.42
5.3.170.1770.03714.44
5.3.160.2170.03714.63
5.3.150.2130.03714.42
5.3.140.2000.04314.41
5.3.130.2000.04314.56
5.3.120.1770.03714.40
5.3.110.1730.04014.39
5.3.100.2030.04013.88
5.3.90.1730.03714.11
5.3.80.1670.04313.95
5.3.70.1930.02713.95
5.3.60.1970.04313.85
5.3.50.1800.03013.80
5.3.40.1930.03313.99
5.3.30.2230.03313.68
5.3.20.1930.04313.74
5.3.10.2200.04313.51
5.3.00.1870.03013.41
5.2.170.1330.03011.17
5.2.160.1530.02710.98
5.2.150.1470.03011.00
5.2.140.1800.04311.03
5.2.130.0170.03011.06
5.2.120.0130.02310.94
5.2.110.0000.04011.04
5.2.100.0030.02711.04
5.2.90.0730.03311.04
5.2.80.1300.02710.93
5.2.70.1570.03011.10
5.2.60.1600.02711.20
5.2.50.1170.02710.86
5.2.40.1100.03011.04
5.2.30.1370.03710.98
5.2.20.1330.04010.86
5.2.10.1130.03010.97
5.2.00.1430.03710.68
5.1.60.1170.0239.89
5.1.50.1170.0239.85
5.1.40.1570.0279.84
5.1.30.1130.02710.41
5.1.20.1170.02310.21
5.1.10.1130.03010.15
5.1.00.1130.03710.04
5.0.50.0530.0238.43
5.0.40.0600.0208.45
5.0.30.0570.0308.23
5.0.20.0530.0278.27
5.0.10.0630.0138.09
5.0.00.0600.0308.05
4.4.90.0630.0177.65
4.4.80.0570.0177.65
4.4.70.0430.0177.65
4.4.60.0570.0177.65
4.4.50.0630.0107.65
4.4.40.0570.0277.65
4.4.30.0600.0137.65
4.4.20.0630.0177.65
4.4.10.0570.0177.65
4.4.00.0630.0207.65
4.3.110.0570.0177.65
4.3.100.0600.0137.65
4.3.90.0570.0137.65
4.3.80.0570.0237.65
4.3.70.0630.0137.65
4.3.60.0670.0237.65
4.3.50.0630.0107.65
4.3.40.0530.0277.65
4.3.30.0270.0177.65
4.3.20.0400.0277.65
4.3.10.0370.0307.65
4.3.00.0370.0277.65

preferences:
155.71 ms | 1614 KiB | 7 Q