3v4l.org

run code in 300+ PHP versions simultaneously
<?php $value = null; $test = (string)$value; echo ($test === null) ? 'null' : 'empty';

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)
8.3.40.0140.00718.75
8.3.30.0070.00720.31
8.3.20.0120.00320.36
8.3.10.0100.00722.14
8.3.00.0000.00922.43
8.2.170.0140.00718.79
8.2.160.0110.01122.96
8.2.150.0170.00025.66
8.2.140.0040.00424.66
8.2.130.0090.00926.16
8.2.120.0070.00019.54
8.2.110.0060.00322.23
8.2.100.0120.00017.72
8.2.90.0030.00517.90
8.2.80.0000.00817.97
8.2.70.0060.00317.63
8.2.60.0070.00017.93
8.2.50.0040.00418.07
8.2.40.0100.00317.94
8.2.30.0040.00418.07
8.2.20.0040.00417.73
8.2.10.0040.00417.68
8.2.00.0000.00717.79
8.1.270.0070.00024.66
8.1.260.0070.01126.35
8.1.250.0130.00028.09
8.1.240.0090.00022.48
8.1.230.0040.00721.01
8.1.220.0080.00017.74
8.1.210.0000.00818.91
8.1.200.0030.00717.10
8.1.190.0000.00817.41
8.1.180.0050.00320.11
8.1.170.0080.00018.45
8.1.160.0030.00322.18
8.1.150.0040.00418.48
8.1.140.0030.00617.30
8.1.130.0070.00017.85
8.1.120.0020.00517.41
8.1.110.0040.00417.36
8.1.100.0000.00717.38
8.1.90.0020.00517.46
8.1.80.0050.00317.43
8.1.70.0040.00417.34
8.1.60.0030.00617.60
8.1.50.0040.00417.43
8.1.40.0040.00417.38
8.1.30.0040.00417.68
8.1.20.0030.00517.64
8.1.10.0060.00317.41
8.1.00.0000.00817.41
8.0.300.0050.00319.98
8.0.290.0040.00417.18
8.0.280.0030.00318.36
8.0.270.0070.00017.31
8.0.260.0030.00316.80
8.0.250.0040.00416.93
8.0.240.0000.00816.93
8.0.230.0050.00216.78
8.0.220.0000.00816.83
8.0.210.0000.00716.86
8.0.200.0070.00016.93
8.0.190.0040.00416.87
8.0.180.0050.00316.67
8.0.170.0000.00716.86
8.0.160.0000.00716.85
8.0.150.0060.00316.77
8.0.140.0030.00516.80
8.0.130.0030.00313.21
8.0.120.0000.00716.79
8.0.110.0070.00016.72
8.0.100.0070.00016.86
8.0.90.0030.00516.63
8.0.80.0070.00716.85
8.0.70.0000.00716.78
8.0.60.0080.00016.86
8.0.50.0050.00216.65
8.0.30.0120.00616.91
8.0.20.0110.00917.40
8.0.10.0040.00416.93
8.0.00.0090.01016.74
7.4.330.0000.00615.00
7.4.320.0060.00016.60
7.4.300.0070.00316.48
7.4.290.0040.00416.51
7.4.280.0000.00616.41
7.4.270.0030.00316.52
7.4.260.0000.00513.25
7.4.250.0050.00316.40
7.4.240.0070.00016.55
7.4.230.0070.00016.38
7.4.220.0060.01216.52
7.4.210.0080.00816.58
7.4.200.0000.00716.24
7.4.190.0070.00016.46
7.4.160.0030.01416.62
7.4.150.0140.00417.40
7.4.140.0120.00817.86
7.4.130.0070.01216.47
7.4.120.0110.00616.47
7.4.110.0070.01516.39
7.4.100.0090.01116.36
7.4.90.0090.00916.73
7.4.80.0130.01119.39
7.4.70.0030.01316.49
7.4.60.0100.00716.53
7.4.50.0000.00516.34
7.4.40.0060.00922.77
7.4.30.0060.01016.45
7.4.00.0040.01314.88
7.3.330.0030.00313.09
7.3.320.0020.00213.05
7.3.310.0070.00016.26
7.3.300.0070.00016.24
7.3.290.0090.00916.31
7.3.280.0080.00716.24
7.3.270.0100.00717.40
7.3.260.0110.00716.34
7.3.250.0120.00616.28
7.3.240.0080.01216.26
7.3.230.0070.01116.57
7.3.210.0090.01516.29
7.3.200.0190.01219.39
7.3.190.0120.00616.48
7.3.180.0060.00916.23
7.3.170.0120.00316.27
7.3.160.0120.01216.25
7.3.120.0080.00414.73
7.3.110.0060.01215.03
7.3.100.0150.00014.82
7.3.90.0060.01214.84
7.3.80.0130.00314.73
7.3.70.0000.01114.94
7.3.60.0030.01014.73
7.3.50.0000.01014.48
7.3.40.0140.00014.65
7.3.30.0130.00014.63
7.3.20.0060.00616.60
7.3.10.0030.00716.71
7.3.00.0030.00716.27
7.2.330.0120.00616.30
7.2.320.0110.00816.36
7.2.310.0140.00316.28
7.2.300.0180.00016.44
7.2.290.0080.00816.59
7.2.250.0100.01014.63
7.2.240.0040.01414.88
7.2.230.0000.02014.84
7.2.220.0100.00714.86
7.2.210.0070.01015.00
7.2.200.0000.01514.96
7.2.190.0000.01414.86
7.2.180.0060.00615.09
7.2.170.0070.00315.08
7.1.330.0030.01015.55
7.1.320.0000.01615.61
7.1.310.0060.00615.78
7.1.300.0060.00615.38
7.1.290.0030.01015.83
7.1.280.0080.00415.63
7.1.270.0070.00315.72
7.1.260.0100.00315.71
7.1.70.0030.01216.95
7.1.60.0060.01619.43
7.1.50.0070.01416.89
7.1.00.0000.03722.40
7.0.200.0030.00516.88
7.0.140.0000.07722.18
7.0.70.4830.05019.88
7.0.60.0100.08019.98
7.0.50.0100.06317.80
7.0.40.0030.09020.04
7.0.30.0200.04020.02
7.0.20.0130.04720.02
7.0.10.0230.07020.20
7.0.00.0100.08020.17
5.6.280.0030.07321.06
5.6.210.0100.07720.71
5.6.200.0070.06018.11
5.6.190.0000.05020.58
5.6.180.0170.07720.58
5.6.170.0230.07020.42
5.6.160.0030.08020.51
5.6.150.0000.04318.12
5.6.140.0070.08018.08
5.6.130.0070.04018.20
5.6.120.0200.07021.09
5.6.110.0070.08320.98
5.6.100.0130.06720.95
5.6.90.0100.06320.87
5.6.80.0230.06320.35
5.6.70.0070.06720.39
5.5.350.0070.07720.37
5.5.340.0070.05017.92
5.5.330.0070.05320.21
5.5.320.0030.08320.27
5.5.310.0300.07720.27
5.5.300.0100.05717.89
5.5.290.0000.04317.96
5.5.280.0130.07320.76
5.5.270.0100.03720.71
5.5.260.0130.07720.66
5.5.250.0070.07320.47
5.5.240.0070.06720.24
5.4.450.0500.05319.46
5.4.440.0870.07719.10
5.4.430.0200.04719.63
5.4.420.0830.05319.48
5.4.410.0930.05719.32
5.4.400.0800.04719.26
5.4.390.0670.05719.12
5.4.380.0230.05318.78
5.4.370.0070.04318.50
5.4.360.0070.03718.45
5.4.350.0110.07011.97
5.4.340.0050.03511.97
5.4.320.0050.03912.45
5.4.310.0090.04312.45
5.4.300.0100.03712.45
5.4.290.0060.04012.45
5.4.280.0070.04212.35
5.4.270.0050.03712.34
5.4.260.0050.04512.35
5.4.250.0060.04112.34
5.4.240.0100.05318.65
5.4.230.0070.05318.64
5.4.220.0070.07018.91
5.4.210.0030.06018.77
5.4.200.0100.05019.02
5.4.190.0070.06018.92
5.4.180.0000.06018.89
5.4.170.0070.05718.93
5.4.160.0170.07018.71
5.4.150.0000.06718.78
5.4.140.0030.05316.46
5.4.130.0100.04716.29
5.4.120.0100.04716.40
5.4.110.0200.04016.25
5.4.100.0100.06016.35
5.4.90.0100.05016.42
5.4.80.0030.05016.47
5.4.70.0170.06016.34
5.4.60.0000.05716.26
5.4.50.0100.07016.46
5.4.40.0100.04716.38
5.4.30.0130.04316.47
5.4.20.0130.05316.36
5.4.10.0100.04716.28
5.4.00.0000.06015.96
5.3.290.0050.04012.80
5.3.280.0170.04714.36
5.3.270.0030.05314.31
5.3.260.0170.04314.30
5.3.250.0100.05714.62
5.3.240.0130.04714.44
5.3.230.0030.05714.69
5.3.220.0130.05314.58
5.3.210.0100.06314.42
5.3.200.0030.05314.71
5.3.190.0100.04714.57
5.3.180.0070.05014.34
5.3.170.0100.04314.57
5.3.160.0130.04714.43
5.3.150.0070.05014.25
5.3.140.0070.05314.59
5.3.130.0070.06314.70
5.3.120.0100.05014.59
5.3.110.0130.06314.59
5.3.100.0100.06013.73
5.3.90.0070.06713.87
5.3.80.0070.06014.03
5.3.70.0030.07014.03
5.3.60.0030.07013.93
5.3.50.0100.05013.96
5.3.40.0130.04313.86
5.3.30.0100.05313.92
5.3.20.0130.04313.70
5.3.10.0070.05713.43
5.3.00.0170.04713.68
5.2.170.0070.04011.06
5.2.160.0100.03311.14
5.2.150.0000.04711.15
5.2.140.0100.04311.15
5.2.130.0130.03311.03
5.2.120.0070.04311.11
5.2.110.0100.03310.87
5.2.100.0030.06011.07
5.2.90.0130.05310.98
5.2.80.0000.05010.92
5.2.70.0030.04310.98
5.2.60.0070.05311.14
5.2.50.0100.05310.95
5.2.40.0030.04010.91
5.2.30.0030.04010.98
5.2.20.0030.05710.89
5.2.10.0130.05010.79
5.2.00.0030.06010.79
5.1.60.0070.0409.76
5.1.50.0030.0509.88
5.1.40.0070.0379.86
5.1.30.0100.04310.31
5.1.20.0130.03010.35
5.1.10.0000.04010.25
5.1.00.0030.0409.98
5.0.50.0030.0308.63
5.0.40.0100.0338.34
5.0.30.0000.0508.17
5.0.20.0030.0338.16
5.0.10.0030.0378.25
5.0.00.0070.0408.24
4.4.90.0070.0206.93
4.4.80.0070.0276.93
4.4.70.0000.0276.93
4.4.60.0070.0276.93
4.4.50.0070.0236.93
4.4.40.0030.0376.93
4.4.30.0030.0206.93
4.4.20.0070.0206.93
4.4.10.0000.0306.93
4.4.00.0070.0306.93
4.3.110.0070.0236.93
4.3.100.0070.0206.93
4.3.90.0070.0276.93
4.3.80.0070.0376.93
4.3.70.0070.0276.93
4.3.60.0000.0236.93
4.3.50.0130.0136.93
4.3.40.0030.0336.93
4.3.30.0000.0236.93
4.3.20.0000.0236.93
4.3.10.0030.0206.93
4.3.00.0130.0177.26

preferences:
40.83 ms | 400 KiB | 5 Q