3v4l.org

run code in 300+ PHP versions simultaneously
<?php $values = [ "", null, false, 0, ]; foreach ($values as $v) { print (isset($v) ? "set\n" : "not set\n"); print ($v == "" ? "empty string" : "not empty string") ."\n\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)
8.3.60.0070.01118.54
8.3.50.0110.00318.17
8.3.40.0070.01018.85
8.3.30.0110.00418.67
8.3.20.0050.00220.21
8.3.10.0040.00421.54
8.3.00.0030.00620.96
8.2.180.0150.00018.54
8.2.170.0150.00022.96
8.2.160.0070.00722.25
8.2.150.0000.00825.66
8.2.140.0060.00324.66
8.2.130.0040.00422.26
8.2.120.0070.00026.35
8.2.110.0000.01022.08
8.2.100.0060.00617.69
8.2.90.0080.00017.78
8.2.80.0080.00022.02
8.2.70.0040.00417.63
8.2.60.0040.00417.50
8.2.50.0080.00017.63
8.2.40.0000.00719.14
8.2.30.0030.00619.23
8.2.20.0040.00418.04
8.2.10.0040.00417.96
8.2.00.0060.00319.28
8.1.280.0070.00725.92
8.1.270.0050.00222.10
8.1.260.0030.00526.35
8.1.250.0040.00428.09
8.1.240.0000.00922.10
8.1.230.0070.00422.13
8.1.220.0030.00617.74
8.1.210.0040.00418.78
8.1.200.0060.00317.35
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0040.00418.62
8.1.160.0050.00218.81
8.1.150.0020.00518.80
8.1.140.0070.00022.20
8.1.130.0050.00320.06
8.1.120.0000.00717.42
8.1.110.0040.00417.33
8.1.100.0000.00817.44
8.1.90.0000.00717.36
8.1.80.0040.00417.50
8.1.70.0070.00017.36
8.1.60.0000.00817.47
8.1.50.0080.00017.42
8.1.40.0080.00017.54
8.1.30.0040.00817.66
8.1.20.0040.00417.48
8.1.10.0050.00317.49
8.1.00.0040.00417.46
8.0.300.0040.00419.94
8.0.290.0000.00716.58
8.0.280.0000.00718.31
8.0.270.0040.00417.26
8.0.260.0000.00618.45
8.0.250.0030.00316.85
8.0.240.0060.00016.84
8.0.230.0070.00016.79
8.0.220.0070.00016.98
8.0.210.0030.00316.91
8.0.200.0050.00316.93
8.0.190.0000.00716.86
8.0.180.0040.00416.80
8.0.170.0050.00516.95
8.0.160.0000.00816.79
8.0.150.0000.00716.95
8.0.140.0000.00716.84
8.0.130.0000.00513.27
8.0.120.0000.00816.71
8.0.110.0030.00316.95
8.0.100.0000.00716.69
8.0.90.0040.00416.85
8.0.80.0040.01116.85
8.0.70.0000.00716.75
8.0.60.0070.00016.89
8.0.50.0040.00416.80
8.0.30.0110.00716.84
8.0.20.0080.01117.40
8.0.10.0040.00416.82
8.0.00.0040.01516.70
7.4.330.0020.00216.73
7.4.320.0060.00016.52
7.4.300.0000.00616.51
7.4.290.0030.00316.46
7.4.280.0050.00316.51
7.4.270.0000.00816.55
7.4.260.0050.00316.35
7.4.250.0030.00316.55
7.4.240.0080.00016.61
7.4.230.0030.00316.31
7.4.220.0050.00316.36
7.4.210.0080.00816.61
7.4.200.0000.00716.70
7.4.160.0090.00816.36
7.4.140.0100.00817.86
7.4.130.0110.00616.48
7.4.120.0090.00916.50
7.4.110.0130.01016.39
7.4.100.0060.01016.47
7.4.90.0100.01316.44
7.4.80.0070.01019.39
7.4.70.0000.02116.50
7.4.60.0120.00916.46
7.4.50.0090.00016.25
7.4.40.0060.00916.54
7.4.00.0040.01414.83
7.3.330.0030.00313.00
7.3.320.0060.00013.18
7.3.310.0000.00716.32
7.3.300.0000.00716.25
7.3.290.0000.00716.31
7.3.280.0120.00616.22
7.3.260.0070.01016.49
7.3.240.0050.01516.43
7.3.230.0070.01116.46
7.3.210.0030.01316.55
7.3.200.0170.00016.15
7.3.190.0090.01316.49
7.3.180.0090.00916.59
7.3.170.0060.01316.46
7.3.160.0100.00716.52
7.2.330.0140.00316.59
7.2.320.0060.01716.58
7.2.310.0090.00616.38
7.2.300.0150.00316.42
7.2.290.0130.00416.45
7.2.120.1130.00614.30
7.2.110.1000.00914.53
7.2.100.1340.01014.52
7.2.90.1210.01014.84
7.2.80.1490.00614.53
7.2.70.1570.00714.94
7.2.60.0930.01714.66
7.2.50.1370.01014.95
7.2.40.1370.00714.64
7.2.30.1620.00314.75
7.2.20.1820.01014.61
7.2.10.0980.00915.02
7.2.00.1370.00714.84
7.1.240.1990.01313.66
7.1.230.1280.01713.80
7.1.220.1420.00913.73
7.1.210.1370.00713.46
7.1.200.0950.01013.94
7.1.190.1960.00713.91
7.1.180.1830.00713.51
7.1.170.1560.00313.91
7.1.160.1270.00713.53
7.1.150.1390.00613.38
7.1.140.1670.00713.16
7.1.130.0940.01013.75
7.1.120.1210.00313.93
7.1.110.0890.01013.40
7.1.100.1270.00913.94
7.1.90.1300.00713.76
7.1.80.0700.01613.74
7.1.70.1410.00613.60
7.1.60.2270.00013.66
7.1.50.1110.00313.79
7.1.40.0940.01613.68
7.1.30.0930.00313.91
7.1.20.1000.00713.55
7.1.10.2140.00713.64
7.1.00.1290.00613.11
5.6.380.0160.00814.34

preferences:
58.61 ms | 400 KiB | 5 Q