3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = ' '; if (empty($string)) { echo 'empty '; } echo $string;

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)
8.3.60.0110.00718.25
8.3.50.0100.00718.02
8.3.40.0170.00318.90
8.3.30.0070.01118.46
8.3.20.0040.00421.80
8.3.10.0070.00021.69
8.3.00.0000.00723.65
8.2.180.0110.00416.63
8.2.170.0040.01522.96
8.2.160.0080.01220.45
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00820.90
8.2.120.0030.00526.35
8.2.110.0040.00721.04
8.2.100.0060.00917.87
8.2.90.0000.00817.97
8.2.80.0050.00317.97
8.2.70.0050.00317.92
8.2.60.0040.00418.03
8.2.50.0050.00318.10
8.2.40.0060.00320.98
8.2.30.0040.00420.95
8.2.20.0040.00418.05
8.2.10.0040.00418.09
8.2.00.0000.00719.27
8.1.280.0120.00625.92
8.1.270.0000.00823.83
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0050.00522.23
8.1.230.0080.00322.67
8.1.220.0040.00417.74
8.1.210.0060.00318.77
8.1.200.0000.00917.13
8.1.190.0030.00617.11
8.1.180.0000.00818.10
8.1.170.0050.00318.46
8.1.160.0000.00718.72
8.1.150.0000.00718.88
8.1.140.0040.00417.62
8.1.130.0070.00019.01
8.1.120.0050.00317.43
8.1.110.0040.00417.26
8.1.100.0000.00817.45
8.1.90.0080.00017.38
8.1.80.0070.00017.42
8.1.70.0000.00717.40
8.1.60.0040.00417.51
8.1.50.0060.00317.44
8.1.40.0000.00817.42
8.1.30.0030.00617.59
8.1.20.0000.00817.55
8.1.10.0000.00717.50
8.1.00.0040.00417.32
8.0.300.0070.00019.73
8.0.290.0050.00316.61
8.0.280.0030.00318.36
8.0.270.0030.00317.12
8.0.260.0040.00417.23
8.0.250.0030.00316.92
8.0.240.0040.00416.93
8.0.230.0000.00716.77
8.0.220.0060.00016.69
8.0.210.0030.00316.71
8.0.200.0040.00716.89
8.0.190.0040.00416.92
8.0.180.0050.00316.73
8.0.170.0060.00316.80
8.0.160.0070.00016.73
8.0.150.0000.00716.73
8.0.140.0070.00016.68
8.0.130.0000.00613.25
8.0.120.0030.00516.67
8.0.110.0040.00416.86
8.0.100.0040.00416.70
8.0.90.0070.00016.80
8.0.80.0030.01116.77
8.0.70.0000.00716.68
8.0.60.0040.00416.80
8.0.50.0040.00416.70
8.0.30.0130.00517.04
8.0.20.0070.01117.40
8.0.10.0000.00717.00
8.0.00.0140.00716.73
7.4.330.0020.00215.55
7.4.320.0030.00316.45
7.4.300.0000.00616.53
7.4.290.0000.00716.41
7.4.280.0070.00016.32
7.4.270.0000.00716.35
7.4.260.0030.00316.40
7.4.250.0000.00716.50
7.4.240.0000.00716.30
7.4.230.0050.00216.27
7.4.220.0040.00416.31
7.4.210.0070.00816.48
7.4.200.0040.00416.34
7.4.160.0100.00616.37
7.4.140.0090.01017.86
7.4.130.0090.00916.34
7.4.120.0130.00716.46
7.4.110.0100.00716.36
7.4.100.0080.00816.51
7.4.90.0060.00916.34
7.4.80.0130.01019.39
7.4.70.0090.00816.38
7.4.60.0090.00616.29
7.4.50.0080.00816.46
7.4.40.0110.00716.39
7.4.00.0020.01314.80
7.3.330.0020.00213.08
7.3.320.0030.00313.11
7.3.310.0030.00616.28
7.3.300.0000.00616.21
7.3.290.0050.00216.20
7.3.280.0090.00516.17
7.3.260.0090.00816.22
7.3.240.0070.01116.20
7.3.230.0090.01216.41
7.3.210.0160.00016.45
7.3.200.0130.00316.39
7.3.190.0030.01216.31
7.3.180.0000.01616.47
7.3.170.0030.01316.27
7.3.160.0030.01316.39
7.3.120.0140.00314.86
7.3.110.0030.01514.67
7.3.100.0030.01214.62
7.3.90.0000.00914.52
7.3.80.0090.00014.90
7.3.70.0000.01514.78
7.3.60.0030.00614.59
7.3.50.0090.00614.76
7.3.40.0040.00814.86
7.3.30.0040.01114.67
7.3.20.0030.01216.63
7.3.10.0060.00916.54
7.3.00.0000.01116.43
7.2.330.0080.00916.18
7.2.320.0120.00616.64
7.2.310.0060.01216.21
7.2.300.0090.00616.22
7.2.290.0070.01116.64
7.2.250.0030.01314.88
7.2.240.0080.01114.82
7.2.230.0000.01914.82
7.2.220.0060.00615.02
7.2.210.0090.00614.74
7.2.200.0000.01414.93
7.2.190.0030.01314.61
7.2.180.0000.01515.04
7.2.170.0070.01114.91
7.2.60.0160.00316.69
7.2.40.2690.00817.82
7.2.30.2460.01617.72
7.2.20.1980.00817.77
7.2.10.2220.00717.54
7.2.00.2360.00918.06
7.1.330.0080.00315.82
7.1.320.0030.01015.76
7.1.310.0070.00315.68
7.1.300.0030.00915.31
7.1.290.0060.00915.42
7.1.280.0040.00815.46
7.1.270.0070.00715.58
7.1.260.0130.00315.66
7.1.200.0060.00615.75
7.1.160.2470.00816.51
7.1.150.2280.01616.58
7.1.140.2150.01016.73
7.1.130.2420.01316.48
7.1.120.1340.00916.61
7.1.110.2020.01016.07
7.1.100.2220.00816.00
7.1.90.3160.01116.24
7.1.80.1800.00916.15
7.1.70.1450.01015.23
7.1.60.1730.01133.02
7.1.50.2310.01132.62
7.1.40.3170.01232.51
7.1.30.2720.01032.57
7.1.20.2900.01632.81
7.1.10.5070.00814.55
7.1.00.3120.01114.61

preferences:
51.19 ms | 401 KiB | 5 Q