3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = 'test'; $test = '234'; var_dump(is_numeric(${$var}[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)
8.3.60.0120.00616.25
8.3.50.0110.00417.89
8.3.40.0120.00618.67
8.3.30.0140.00018.75
8.3.20.0080.00019.10
8.3.10.0060.00321.90
8.3.00.0040.00423.53
8.2.180.0110.00418.41
8.2.170.0120.00922.96
8.2.160.0170.00319.36
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0080.00020.41
8.2.120.0070.00026.35
8.2.110.0100.00022.24
8.2.100.0080.00417.64
8.2.90.0080.00019.17
8.2.80.0060.00317.97
8.2.70.0000.00817.93
8.2.60.0060.00318.05
8.2.50.0050.00318.10
8.2.40.0040.00419.30
8.2.30.0050.00319.18
8.2.20.0070.00017.99
8.2.10.0080.00019.91
8.2.00.0070.00019.38
8.1.280.0090.00925.92
8.1.270.0040.00422.15
8.1.260.0070.00026.35
8.1.250.0050.00328.09
8.1.240.0040.00422.64
8.1.230.0070.00319.00
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0000.00817.35
8.1.190.0060.00317.00
8.1.180.0030.00618.10
8.1.170.0050.00318.89
8.1.160.0040.00418.89
8.1.150.0080.00018.57
8.1.140.0000.00717.74
8.1.130.0030.00319.02
8.1.120.0030.00617.48
8.1.110.0040.00417.35
8.1.100.0060.00617.36
8.1.90.0050.00517.37
8.1.80.0040.00417.42
8.1.70.0030.00317.45
8.1.60.0030.00717.63
8.1.50.0030.00517.56
8.1.40.0040.00417.39
8.1.30.0080.00017.66
8.1.20.0050.00317.61
8.1.10.0000.00817.52
8.1.00.0040.00417.51
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0070.00018.37
8.0.270.0000.00717.12
8.0.260.0040.00417.16
8.0.250.0030.00316.96
8.0.240.0030.00616.98
8.0.230.0030.00316.95
8.0.220.0000.00616.88
8.0.210.0050.00316.86
8.0.200.0040.00416.97
8.0.190.0000.00716.96
8.0.180.0000.00716.92
8.0.170.0040.00716.79
8.0.160.0000.00716.90
8.0.150.0070.00016.90
8.0.140.0050.00316.80
8.0.130.0050.00013.32
8.0.120.0000.00816.86
8.0.110.0070.00016.76
8.0.100.0040.00416.78
8.0.90.0030.00616.84
8.0.80.0050.01416.93
8.0.70.0040.00416.68
8.0.60.0000.00716.93
8.0.50.0000.00716.85
8.0.30.0040.01317.10
8.0.20.0100.00917.40
8.0.10.0070.00016.87
8.0.00.0150.00316.75
7.4.330.0000.00515.55
7.4.320.0030.00316.60
7.4.300.0060.00016.60
7.4.290.0000.00716.50
7.4.280.0030.00316.64
7.4.270.0100.00016.50
7.4.260.0030.00316.57
7.4.250.0000.00716.51
7.4.240.0000.00816.53
7.4.230.0030.00316.38
7.4.220.0080.00016.39
7.4.210.0080.00716.50
7.4.200.0000.00716.66
7.4.160.0090.01116.44
7.4.140.0090.01117.86
7.4.130.0170.00016.57
7.4.120.0090.00916.48
7.4.110.0070.01016.34
7.4.100.0110.00616.41
7.4.90.0110.00816.38
7.4.80.0130.00319.39
7.4.70.0040.01216.49
7.4.60.0090.00716.48
7.4.50.0110.00716.42
7.4.40.0120.00916.51
7.4.00.0070.01015.16
7.3.330.0050.00013.05
7.3.320.0030.00312.96
7.3.310.0000.00716.17
7.3.300.0060.00016.18
7.3.290.0000.00616.19
7.3.280.0080.00816.14
7.3.260.0100.00616.31
7.3.240.0110.00516.51
7.3.230.0110.01116.23
7.3.210.0130.00316.46
7.3.200.0090.00616.60
7.3.190.0090.01616.32
7.3.180.0070.01416.54
7.3.170.0060.00916.19
7.3.160.0050.01116.38
7.3.10.0060.00916.34
7.3.00.0030.00716.52
7.2.330.0090.00916.15
7.2.320.0060.01316.58
7.2.310.0060.01516.54
7.2.300.0140.00316.22
7.2.290.0090.00916.50
7.2.130.0000.01316.70
7.2.120.0030.00916.86
7.2.110.0100.00816.60
7.2.100.0060.00916.65
7.2.90.0080.00816.87
7.2.80.0040.00916.73
7.2.70.1160.00615.66
7.2.60.1060.00515.58
7.2.50.0720.01015.61
7.2.40.0650.00715.48
7.2.30.0930.00815.90
7.2.20.0670.01115.80
7.2.10.0770.00415.87
7.2.00.0640.00715.65
7.1.250.0050.00515.70
7.1.200.0070.00615.63
7.1.170.1260.00613.93
7.1.160.1420.01713.80
7.1.150.1530.01013.75
7.1.140.1160.00713.80
7.1.130.1240.01313.68
7.1.120.1770.00713.68
7.1.110.1240.00714.02
7.1.100.1620.00313.94
7.1.90.1620.01313.64
7.1.80.1690.00713.75
7.1.70.2040.01313.81
7.1.60.1860.01331.68
7.1.50.2070.01031.60
7.1.40.1980.01031.89
7.1.30.2700.01031.59
7.1.20.2040.00731.80
7.1.10.2180.01313.83
7.1.00.1860.01013.61

preferences:
57.05 ms | 400 KiB | 5 Q