3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'ab'; $a = strlen($str); echo $a; if ($a > 1) { echo "\na > 1"; } if (isset($str[1])) { echo "\nisset 1"; } echo "\n\n-----\n".$str[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)
8.3.40.0130.00618.84
8.3.30.0150.00018.55
8.3.20.0080.00018.95
8.3.10.0040.00421.72
8.3.00.0050.00219.14
8.2.170.0030.01022.96
8.2.160.0140.00020.41
8.2.150.0030.00524.18
8.2.140.0050.00324.66
8.2.130.0080.00019.83
8.2.120.0040.00426.35
8.2.110.0090.00019.30
8.2.100.0120.00019.61
8.2.90.0040.00417.75
8.2.80.0030.00617.97
8.2.70.0080.00017.80
8.2.60.0000.00818.19
8.2.50.0060.00318.10
8.2.40.0020.00520.68
8.2.30.0050.00319.41
8.2.20.0000.00718.06
8.2.10.0040.00418.10
8.2.00.0040.00417.84
8.1.270.0040.00422.19
8.1.260.0080.00028.09
8.1.250.0040.00428.09
8.1.240.0090.00020.86
8.1.230.0120.00017.64
8.1.220.0030.00617.79
8.1.210.0040.00418.77
8.1.200.0040.00817.23
8.1.190.0000.00817.35
8.1.180.0050.00518.10
8.1.170.0040.00418.51
8.1.160.0000.00718.88
8.1.150.0030.00320.16
8.1.140.0040.00419.48
8.1.130.0000.00717.55
8.1.120.0000.00717.29
8.1.110.0030.00617.32
8.1.100.0030.00517.34
8.1.90.0030.00717.27
8.1.80.0070.00017.38
8.1.70.0000.00717.35
8.1.60.0040.00417.55
8.1.50.0040.00417.46
8.1.40.0030.00617.34
8.1.30.0020.00517.52
8.1.20.0080.00317.47
8.1.10.0030.00617.58
8.1.00.0060.00317.51
8.0.300.0000.00718.77
8.0.290.0080.00016.75
8.0.280.0030.00518.44
8.0.270.0000.00717.25
8.0.260.0080.00017.21
8.0.250.0000.00816.94
8.0.240.0040.00416.88
8.0.230.0030.00316.95
8.0.220.0000.00716.72
8.0.210.0070.00016.88
8.0.200.0080.00016.82
8.0.190.0070.00016.95
8.0.180.0000.00716.93
8.0.170.0040.00416.85
8.0.160.0040.00416.99
8.0.150.0070.00016.80
8.0.140.0080.00016.78
8.0.130.0060.00013.33
8.0.120.0070.00016.82
8.0.110.0030.00316.67
8.0.100.0070.00016.73
8.0.90.0070.00016.64
8.0.80.0180.00316.82
8.0.70.0030.00516.73
8.0.60.0040.00416.69
8.0.50.0000.00716.76
8.0.30.0080.01116.96
8.0.20.0140.00717.40
8.0.10.0000.00716.99
8.0.00.0060.01216.50
7.4.330.0000.00515.55
7.4.320.0000.00616.57
7.4.300.0000.00616.50
7.4.290.0070.00016.54
7.4.280.0040.00416.52
7.4.270.0030.00316.57
7.4.260.0030.00516.39
7.4.250.0070.00016.41
7.4.240.0040.00416.34
7.4.230.0000.00716.32
7.4.220.0100.01616.53
7.4.210.0080.00616.47
7.4.200.0000.00716.27
7.4.160.0110.00516.37
7.4.150.0130.00317.40
7.4.140.0130.00617.86
7.4.130.0110.00816.49
7.4.120.0100.00716.45
7.4.110.0100.00616.53
7.4.100.0120.00316.34
7.4.90.0110.00616.51
7.4.80.0070.01016.54
7.4.70.0030.01316.34
7.4.60.0060.00916.37
7.4.50.0120.00316.61
7.4.40.0100.00716.36
7.4.30.0100.00616.48
7.4.00.0080.01014.84
7.3.330.0000.00813.16
7.3.320.0000.00513.17
7.3.310.0030.00316.34
7.3.300.0060.00016.35
7.3.290.0030.00316.31
7.3.280.0080.00916.31
7.3.270.0100.00617.40
7.3.260.0130.00816.62
7.3.250.0100.00716.33
7.3.240.0100.00916.40
7.3.230.0070.01016.39
7.3.210.0100.00616.22
7.3.200.0130.00819.39
7.3.190.0160.00516.30
7.3.180.0120.00816.62
7.3.170.0100.00716.51
7.3.160.0070.01016.33
7.3.120.0070.01114.85
7.3.110.0120.00614.75
7.3.100.0090.00614.81
7.3.90.0060.00314.82
7.3.80.0000.01014.61
7.3.70.0000.00814.66
7.3.60.0070.00714.79
7.3.50.0060.00614.69
7.3.40.0090.00614.70
7.3.30.0100.00014.87
7.3.20.0000.01316.80
7.3.10.0060.00916.57
7.3.00.0100.00316.76
7.2.330.0070.01016.42
7.2.320.0100.00716.46
7.2.310.0070.01016.59
7.2.300.0140.00716.56
7.2.290.0090.00916.56
7.2.250.0070.01414.97
7.2.240.0100.00614.91
7.2.230.0120.00615.30
7.2.220.0000.01115.23
7.2.210.0030.01214.66
7.2.200.0100.00315.16
7.2.190.0030.01014.37
7.2.180.0060.00615.02
7.2.170.0090.00614.86
7.2.60.0100.00317.04
7.2.50.0030.00916.90
7.2.00.0080.01019.39
7.1.330.0040.01115.85
7.1.320.0100.00316.03
7.1.310.0030.01015.93
7.1.300.0060.00915.77
7.1.290.0070.00715.96
7.1.280.0070.00715.84
7.1.270.0090.00315.61
7.1.260.0080.00615.86
7.1.200.0080.00415.68
7.1.70.0060.00316.93
7.1.60.0030.00717.40
7.1.00.0030.07722.32
7.0.200.0030.00316.48
7.0.130.0030.08322.07
7.0.120.0170.06722.06
7.0.110.0100.08322.04
7.0.100.0070.06022.20
7.0.90.0100.06722.11
7.0.80.0070.05722.11
7.0.70.0070.06022.11
7.0.60.0070.06321.98
7.0.50.0070.06022.10
7.0.40.0200.06722.20
7.0.30.0100.06322.09
7.0.20.0130.07022.11
7.0.10.0030.08022.13
7.0.00.0070.08022.06
5.6.280.0070.06720.91
5.6.270.0130.07020.80
5.6.260.0100.07720.99
5.6.250.0100.05721.10
5.6.240.0230.06720.98
5.6.230.0100.08021.05
5.6.220.0100.05720.98
5.6.210.0030.06021.07
5.6.200.0070.06021.04
5.6.190.0200.05320.93
5.6.180.0100.05721.05
5.6.170.0100.06320.84
5.6.160.0130.07020.94
5.6.150.0100.07721.00
5.6.140.0030.07020.74
5.6.130.0100.06020.84
5.6.120.0130.06721.06
5.6.110.0130.07020.72
5.6.100.0070.06320.73
5.6.90.0130.05320.73
5.6.80.0270.05320.30
5.6.70.0130.07020.20
5.6.60.0130.06720.20
5.6.50.0130.06020.30
5.6.40.0130.07320.22
5.6.30.0170.06720.19
5.6.20.0170.07020.29
5.6.10.0100.06320.15
5.6.00.0130.06720.37

preferences:
59.01 ms | 400 KiB | 5 Q