3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = ''; $var2 = null; $var3 = ""; echo isset($var) . "\n"; echo isset($var2). "\n"; echo isset($var3). "\n";

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)
8.3.60.0040.01118.31
8.3.50.0120.00622.10
8.3.40.0100.00718.63
8.3.30.0100.00318.67
8.3.20.0000.00720.26
8.3.10.0080.00521.77
8.3.00.0040.00422.40
8.2.180.0000.01518.05
8.2.170.0100.01022.96
8.2.160.0070.00722.11
8.2.150.0060.00324.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0060.00317.63
8.2.110.0060.00320.35
8.2.100.0080.00317.63
8.2.90.0000.00819.17
8.2.80.0050.00317.97
8.2.70.0040.00417.63
8.2.60.0060.00317.93
8.2.50.0030.00618.07
8.2.40.0000.00821.25
8.2.30.0040.00417.92
8.2.20.0000.00717.57
8.2.10.0070.00017.94
8.2.00.0000.00717.91
8.1.280.0070.00725.92
8.1.270.0070.01120.23
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00323.88
8.1.230.0120.00017.48
8.1.220.0040.00417.74
8.1.210.0060.00318.77
8.1.200.0040.00417.25
8.1.190.0080.00017.23
8.1.180.0000.00818.10
8.1.170.0050.00318.30
8.1.160.0030.00521.97
8.1.150.0030.00518.84
8.1.140.0000.00817.45
8.1.130.0020.00517.69
8.1.120.0040.00417.45
8.1.110.0040.00417.43
8.1.100.0070.00017.41
8.1.90.0070.00017.50
8.1.80.0040.00417.37
8.1.70.0000.00717.42
8.1.60.0040.00417.49
8.1.50.0030.00617.49
8.1.40.0000.00717.37
8.1.30.0040.00417.57
8.1.20.0040.00417.58
8.1.10.0000.00717.54
8.1.00.0040.00417.34
8.0.300.0080.00018.77
8.0.290.0030.00316.75
8.0.280.0000.00718.35
8.0.270.0000.00817.25
8.0.260.0060.00317.31
8.0.250.0030.00317.00
8.0.240.0060.00016.90
8.0.230.0070.00016.81
8.0.220.0000.00816.91
8.0.210.0030.00316.75
8.0.200.0030.00316.82
8.0.190.0040.00416.96
8.0.180.0040.00416.96
8.0.170.0050.00316.94
8.0.160.0070.00016.90
8.0.150.0040.00416.78
8.0.140.0100.00016.90
8.0.130.0030.00313.34
8.0.120.0000.00816.80
8.0.110.0000.00716.74
8.0.100.0080.00016.91
8.0.90.0050.00316.99
8.0.80.0070.00716.90
8.0.70.0040.00416.95
8.0.60.0040.00416.72
8.0.50.0040.00416.76
8.0.30.0100.01016.99
8.0.20.0130.00617.40
8.0.10.0020.00516.78
8.0.00.0090.00816.58
7.4.330.0030.00315.08
7.4.320.0030.00316.51
7.4.300.0000.00816.28
7.4.290.0060.00316.48
7.4.280.0040.00416.54
7.4.270.0040.00416.54
7.4.260.0000.00716.31
7.4.250.0040.00416.41
7.4.240.0030.00416.46
7.4.230.0040.00416.28
7.4.220.0040.01416.47
7.4.210.0070.00716.42
7.4.200.0000.00816.62
7.4.160.0100.00716.40
7.4.150.0130.00317.40
7.4.140.0110.01017.86
7.4.130.0100.01016.44
7.4.120.0100.00716.45
7.4.110.0120.00616.38
7.4.100.0080.01116.62
7.4.90.0150.00316.49
7.4.80.0000.01719.39
7.4.70.0130.00316.50
7.4.60.0080.00816.55
7.4.50.0070.00016.55
7.4.40.0100.00716.52
7.4.30.0120.00916.19
7.4.00.0060.01014.82
7.3.330.0050.00013.02
7.3.320.0000.00513.04
7.3.310.0030.00616.05
7.3.300.0070.00016.21
7.3.290.0070.00616.18
7.3.280.0080.01116.17
7.3.270.0160.00017.40
7.3.260.0090.00816.51
7.3.250.0100.01116.37
7.3.240.0150.00616.19
7.3.230.0030.01316.46
7.3.210.0100.01016.12
7.3.200.0120.00819.39
7.3.190.0120.00616.18
7.3.180.0110.00516.09
7.3.170.0080.00816.31
7.3.160.0070.01416.11
7.3.120.0090.00714.76
7.3.110.0100.00714.61
7.3.100.0120.00514.50
7.3.90.0040.00914.80
7.3.80.0100.00114.83
7.3.70.0020.01314.91
7.3.60.0050.01014.66
7.3.50.0050.00614.77
7.3.40.0080.00814.74
7.3.30.0030.01014.64
7.3.20.0070.00716.59
7.3.10.0050.01016.70
7.3.00.0100.00516.65
7.2.330.0120.00616.36
7.2.320.0100.01316.16
7.2.310.0030.01316.63
7.2.300.0100.01016.48
7.2.290.0060.00916.53
7.2.250.0040.01214.93
7.2.240.0080.01114.89
7.2.230.0050.01414.88
7.2.220.0040.00914.89
7.2.210.0060.00815.06
7.2.200.0020.01315.04
7.2.190.0060.00814.78
7.2.180.0060.01014.82
7.2.170.0020.01214.89
7.2.00.0030.00919.39
7.1.330.0040.00915.64
7.1.320.0070.00415.79
7.1.310.0030.00815.61
7.1.300.0030.01015.75
7.1.290.0070.00915.55
7.1.280.0080.00615.77
7.1.270.0080.00515.64
7.1.260.0020.01315.55
7.1.100.0030.01017.95
7.1.70.0070.00317.00
7.1.60.0070.00317.03
7.1.50.0070.01016.84
7.1.00.0070.07322.43
7.0.200.0030.01416.72
7.0.60.0000.04319.85
7.0.50.0200.06317.88
7.0.40.0100.05720.23
7.0.30.0170.04320.09
7.0.20.0270.03720.33
7.0.10.0070.08320.16
7.0.00.0000.04320.30
5.6.280.0030.07021.09
5.6.210.0130.07020.46
5.6.200.0070.04318.18
5.6.190.0100.07320.77
5.6.180.3730.03320.33
5.6.170.0200.08720.62
5.6.160.0030.06020.41
5.6.150.0070.04318.21
5.6.140.0100.07318.17
5.6.130.0130.07718.21
5.6.120.0100.08320.98
5.6.110.0200.06020.98
5.6.100.0070.08320.98
5.6.90.0170.07320.97
5.6.80.0030.04020.52
5.6.70.0230.07720.39
5.5.350.0330.07320.38
5.5.340.0070.08017.88
5.5.330.0100.05320.13
5.5.320.0300.04020.21
5.5.310.0200.05320.18
5.5.300.0070.03718.00
5.5.290.0130.06017.93
5.5.280.0030.05020.89
5.5.270.0070.05020.83
5.5.260.0100.08720.71
5.5.250.0100.06320.74
5.5.240.0270.07020.18
5.4.450.0670.06319.31
5.4.440.1000.05319.48
5.4.430.0570.06319.54
5.4.420.0430.07019.54
5.4.410.0630.05319.00
5.4.400.0600.06019.23
5.4.390.0700.05719.16
5.4.380.0800.05719.12
5.4.370.0470.06318.99
5.4.360.0930.04719.14
5.4.350.0700.05319.19
5.4.340.0700.05719.30
5.4.320.0700.05319.30
5.4.310.0570.04718.80
5.4.300.0470.05018.99
5.4.290.0770.04719.22
5.4.280.0600.06019.25
5.4.270.0700.04319.27
5.4.260.0700.05019.12
5.4.250.0730.05019.07
5.4.240.0830.04719.15
5.4.230.0770.05319.30
5.4.220.0730.06019.21
5.4.210.0330.05318.98
5.4.200.0500.04316.87
5.4.190.0830.04719.18
5.4.180.0530.05018.93
5.4.170.0530.06018.86
5.4.160.0900.04319.08
5.4.150.0730.06019.23
5.4.140.0770.04716.37
5.4.130.0670.05316.24
5.4.120.0400.05316.32
5.4.110.0030.05316.19
5.4.100.0730.05016.48
5.4.90.0670.05716.27
5.4.80.0570.05016.41
5.4.70.0600.05016.36
5.4.60.0670.07016.18
5.4.50.0770.05316.34
5.4.40.0670.05316.31
5.4.30.0630.06016.56
5.4.20.0870.05316.16
5.4.10.0700.05016.16
5.4.00.0730.05015.89
5.3.290.0800.05014.62
5.3.280.0330.04314.45
5.3.270.0400.05714.50
5.3.260.0570.05714.43
5.3.250.0700.06014.54
5.3.240.0730.05014.58
5.3.230.0170.05714.57
5.3.220.0700.05014.40
5.3.210.0700.06314.39
5.3.200.0700.04714.57
5.3.190.0330.06014.40
5.3.180.0670.05014.42
5.3.170.0970.05714.43
5.3.160.0770.05714.41
5.3.150.0670.05314.39
5.3.140.0730.05314.38
5.3.130.0800.04714.39
5.3.120.0630.06314.43
5.3.110.0930.04714.34
5.3.100.0930.04314.00
5.3.90.0830.04713.97
5.3.80.0770.05013.80
5.3.70.0830.04014.03
5.3.60.0900.04714.02
5.3.50.0730.05014.04
5.3.40.0670.05713.82
5.3.30.0730.04713.75
5.3.20.0800.04713.47
5.3.10.0700.04713.54
5.3.00.0800.04713.73
5.2.170.0430.04711.23
5.2.160.0670.04311.30
5.2.150.0730.04011.09
5.2.140.0630.04311.08
5.2.130.0570.04711.12
5.2.120.0630.03711.12
5.2.110.0630.04010.98
5.2.100.0470.04711.04
5.2.90.0530.03711.08
5.2.80.0600.03711.04
5.2.70.0700.04010.93
5.2.60.0500.05010.89
5.2.50.0600.04010.90
5.2.40.0470.04310.83
5.2.30.0530.04310.95
5.2.20.0500.03711.03
5.2.10.0470.03710.81
5.2.00.0570.04310.82
5.1.60.0500.03010.07
5.1.50.0370.03710.05
5.1.40.0670.0339.86
5.1.30.0370.05310.41
5.1.20.0430.03710.42
5.1.10.0570.0309.90
5.1.00.0470.03010.07
5.0.50.0200.0378.41
5.0.40.0200.0238.56
5.0.30.0230.0478.15
5.0.20.0270.0278.07
5.0.10.0300.0278.32
5.0.00.0300.0438.04
4.4.90.0330.0235.84
4.4.80.0130.0275.80
4.4.70.0230.0175.74
4.4.60.0400.0175.83
4.4.50.0330.0205.75
4.4.40.0230.0435.80
4.4.30.0130.0305.80
4.4.20.0230.0305.80
4.4.10.0300.0275.86
4.4.00.0300.0305.82
4.3.110.0270.0235.75
4.3.100.0200.0275.71
4.3.90.0130.0305.73
4.3.80.0200.0435.74
4.3.70.0270.0275.75
4.3.60.0430.0205.78
4.3.50.0230.0235.66
4.3.40.0370.0305.66
4.3.30.0100.0204.50
4.3.20.0170.0204.44
4.3.10.0130.0234.44
4.3.00.0130.0237.04

preferences:
61.19 ms | 401 KiB | 5 Q