3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "3"; $hasPrefix = substr($a, 0, 1) == '_'; var_dump($hasPrefix); var_dump(intval($a));

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)
8.3.70.0110.00416.50
8.3.60.0090.00616.50
8.3.50.0080.00821.03
8.3.40.0100.00718.63
8.3.30.0110.00318.98
8.3.20.0030.00620.25
8.3.10.0000.00923.61
8.3.00.0050.00319.13
8.2.180.0100.00716.50
8.2.170.0200.00022.96
8.2.160.0070.00720.48
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0040.00420.99
8.2.110.0060.00320.55
8.2.100.0070.00317.72
8.2.90.0040.00419.22
8.2.80.0030.00517.97
8.2.70.0080.00017.38
8.2.60.0040.00417.90
8.2.50.0080.00618.07
8.2.40.0030.00519.76
8.2.30.0070.00017.98
8.2.20.0050.00317.66
8.2.10.0030.00618.09
8.2.00.0000.00917.70
8.1.280.0040.01525.92
8.1.270.0030.00623.88
8.1.260.0050.00326.35
8.1.250.0000.00728.09
8.1.240.0000.00923.99
8.1.230.0070.00417.42
8.1.220.0030.00517.74
8.1.210.0050.00318.77
8.1.200.0040.00417.23
8.1.190.0060.00317.53
8.1.180.0000.00818.10
8.1.170.0000.00818.64
8.1.160.0000.00722.00
8.1.150.0000.00718.63
8.1.140.0030.00517.44
8.1.130.0000.00717.76
8.1.120.0040.00417.37
8.1.110.0020.00517.48
8.1.100.0050.00317.41
8.1.90.0050.00317.27
8.1.80.0000.00817.33
8.1.70.0000.00817.44
8.1.60.0080.00317.44
8.1.50.0030.00517.38
8.1.40.0000.00717.46
8.1.30.0030.00617.55
8.1.20.0040.00417.48
8.1.10.0040.00417.31
8.1.00.0000.00717.36
8.0.300.0070.00018.77
8.0.290.0040.00416.63
8.0.280.0070.00018.24
8.0.270.0000.00717.13
8.0.260.0030.00317.05
8.0.250.0000.00716.93
8.0.240.0070.00016.92
8.0.230.0070.00016.87
8.0.220.0000.00716.80
8.0.210.0000.00616.84
8.0.200.0000.00716.87
8.0.190.0090.00316.88
8.0.180.0050.00216.89
8.0.170.0040.00416.80
8.0.160.0040.00416.86
8.0.150.0030.00316.81
8.0.140.0000.00816.67
8.0.130.0000.00513.22
8.0.120.0040.00416.82
8.0.110.0060.00316.82
8.0.100.0040.00416.71
8.0.90.0000.00716.75
8.0.80.0090.00616.86
8.0.70.0000.00716.75
8.0.60.0070.00016.83
8.0.50.0040.00416.70
8.0.30.0100.01217.13
8.0.20.0130.00517.40
8.0.10.0040.00416.86
8.0.00.0080.01216.75
7.4.330.0030.00315.14
7.4.320.0000.00616.48
7.4.300.0030.00316.47
7.4.290.0030.00316.61
7.4.280.0000.00716.58
7.4.270.0030.00316.40
7.4.260.0030.00316.59
7.4.250.0000.00716.55
7.4.240.0000.00716.48
7.4.230.0030.00316.46
7.4.220.0140.00916.46
7.4.210.0060.00916.53
7.4.200.0040.00416.67
7.4.190.0030.00316.74
7.4.160.0100.00716.51
7.4.150.0090.00917.40
7.4.140.0100.01117.86
7.4.130.0110.00916.54
7.4.120.0140.00316.50
7.4.110.0090.00916.40
7.4.100.0060.01116.36
7.4.90.0090.00916.54
7.4.80.0090.01219.39
7.4.70.0070.01116.34
7.4.60.0130.00316.32
7.4.50.0000.00916.28
7.4.40.0080.00816.59
7.4.30.0050.01116.25
7.4.00.0030.01414.95
7.3.330.0060.00013.18
7.3.320.0030.00313.15
7.3.310.0030.00316.19
7.3.300.0030.00316.20
7.3.290.0120.00416.29
7.3.280.0130.00416.22
7.3.270.0100.00717.40
7.3.260.0030.01716.26
7.3.250.0130.00816.31
7.3.240.0130.00316.45
7.3.230.0130.00316.39
7.3.210.0030.01516.24
7.3.200.0060.01519.39
7.3.190.0080.01116.47
7.3.180.0120.00316.57
7.3.170.0090.00816.29
7.3.160.0090.00616.30
7.3.120.0090.00914.75
7.3.10.0100.00016.29
7.3.00.0060.00616.48
7.2.330.0090.00916.66
7.2.320.0120.01216.16
7.2.310.0130.00316.55
7.2.300.0120.01116.72
7.2.290.0090.00816.60
7.2.130.0090.00617.02
7.2.120.0090.00616.69
7.2.110.0030.00916.60
7.2.100.0080.00716.38
7.2.90.0060.00816.73
7.2.80.0080.00516.56
7.2.70.0080.00517.01
7.2.60.0080.00616.80
7.2.50.0110.00416.70
7.2.40.0110.00616.75
7.2.30.0090.00516.89
7.2.20.0070.00716.64
7.2.10.0110.00216.77
7.2.00.0090.00417.56
7.1.250.0060.00315.62
7.1.240.0170.00015.78
7.1.230.0050.00815.78
7.1.220.0090.00515.79
7.1.210.0090.00315.79
7.1.200.0100.01115.45
7.1.190.0050.01015.67
7.1.180.0100.00715.67
7.1.170.0110.00915.61
7.1.160.0100.00715.55
7.1.150.0060.00915.91
7.1.140.0040.01215.68
7.1.130.0120.00315.66
7.1.120.0120.00015.53
7.1.110.0070.00715.58
7.1.100.0060.00716.74
7.1.90.0080.00415.79
7.1.80.0030.01015.93
7.1.70.0090.00516.51
7.1.60.0100.00817.57
7.1.50.0050.01316.37
7.1.40.0000.01115.71
7.1.30.0120.00015.47
7.1.20.0150.00015.46
7.1.10.0100.00715.65
7.1.00.0070.04019.02
7.0.320.0150.00015.13
7.0.310.0110.00715.38
7.0.300.0140.00315.25
7.0.290.0040.00815.34
7.0.280.0090.00215.45
7.0.270.0080.00515.43
7.0.260.0130.00015.13
7.0.250.0130.00315.43
7.0.240.0120.00515.55
7.0.230.0100.00415.15
7.0.220.0080.00815.43
7.0.210.0100.00715.01
7.0.200.0070.00416.05
7.0.190.0090.00415.27
7.0.180.0090.00615.09
7.0.170.0110.00315.32
7.0.160.0090.00915.18
7.0.150.0150.00315.43
7.0.140.0060.03818.61
7.0.130.0130.00015.45
7.0.120.0080.00615.22
7.0.110.0080.00815.24
7.0.100.0130.00315.52
7.0.90.0150.00015.03
7.0.80.0160.00015.37
7.0.70.0100.00715.53
7.0.60.0070.01818.52
7.0.50.0040.02818.79
7.0.40.0090.01516.81
7.0.30.0100.01816.63
7.0.20.0050.02216.61
7.0.10.0020.02116.66
7.0.00.0040.01916.82
5.6.380.0060.00614.23
5.6.370.0080.00814.08
5.6.360.0040.01114.23
5.6.350.0120.00414.08
5.6.340.0140.00414.35
5.6.330.0080.00814.55
5.6.320.0120.00314.49
5.6.310.0100.00314.32
5.6.300.0060.00914.41
5.6.290.0040.00814.19
5.6.280.0040.04217.37
5.6.270.0070.00414.60
5.6.260.0120.00414.12
5.6.250.0050.01114.19
5.6.240.0080.00814.09
5.6.230.0120.00214.37
5.6.220.0140.00314.14
5.6.210.0030.02617.35
5.6.200.0080.01917.50
5.6.190.0020.02317.57
5.6.180.0100.02717.69
5.6.170.0100.01517.64
5.6.160.0130.01517.70
5.6.150.0020.02217.76
5.6.140.0040.02117.52
5.6.130.0100.01717.56
5.6.120.0060.03017.54
5.6.110.0070.02417.43
5.6.100.0080.01617.63
5.6.90.0060.04717.52
5.6.80.0100.04217.27
5.6.70.0070.04117.19
5.6.60.0150.03317.16
5.6.50.0040.04517.30
5.6.40.0120.04017.19
5.6.30.0020.04617.23
5.6.20.0090.04417.38
5.6.10.0120.03717.36
5.6.00.0100.04017.23
5.5.380.0150.00010.87
5.5.370.0000.01010.98
5.5.360.0000.01010.94
5.5.350.0020.02815.64
5.5.340.0050.02215.95
5.5.330.0040.02015.84
5.5.320.0080.02015.90
5.5.310.0040.01815.88
5.5.300.0040.01815.83
5.5.290.0030.02215.85
5.5.280.0090.01815.86
5.5.270.0050.02415.85
5.5.260.0090.02515.70
5.5.250.0130.03515.96
5.5.240.0030.04215.57
5.5.230.0080.03815.58
5.5.220.0120.03515.45
5.5.210.0080.04215.63
5.5.200.0090.02715.61
5.5.190.0070.03515.57
5.5.180.0110.03815.39
5.5.170.0140.00313.89
5.5.160.0070.04115.57
5.5.150.0090.03915.52
5.5.140.0030.04515.48
5.5.130.0060.04015.46
5.5.120.0050.04415.55
5.5.110.0100.03315.46
5.5.100.0080.03715.38
5.5.90.0080.03715.54
5.5.80.0100.03315.64
5.5.70.0080.03815.41
5.5.60.0030.04215.48
5.5.50.0060.02215.50
5.5.40.0100.03015.43
5.5.30.0050.02715.46
5.5.20.0070.04015.26
5.5.10.0030.04315.58
5.5.00.0100.03515.40
5.4.450.0040.01715.11
5.4.440.0040.02314.99
5.4.430.0060.02115.02
5.4.420.0060.01715.14
5.4.410.0030.03614.95
5.4.400.0060.03515.07
5.4.390.0180.03114.84
5.4.380.0130.03015.03
5.4.370.0090.03414.97
5.4.360.0060.03814.78
5.4.350.0050.04114.88
5.4.340.0070.04014.81
5.4.330.0080.00511.01
5.4.320.0060.04114.92
5.4.310.0030.04014.89
5.4.300.0090.04014.93
5.4.290.0050.03914.92
5.4.280.0080.03215.00
5.4.270.0040.03615.01
5.4.260.0050.04214.85
5.4.250.0080.03814.98
5.4.240.0060.04115.04
5.4.230.0090.03514.87
5.4.220.0070.03814.95
5.4.210.0100.03514.86
5.4.200.0060.03814.95
5.4.190.0070.04214.99
5.4.180.0110.03615.12
5.4.170.0070.03715.06
5.4.160.0050.04014.86
5.4.150.0060.04314.91
5.4.140.0060.02913.54
5.4.130.0020.04213.64
5.4.120.0030.03813.51
5.4.110.0040.04113.57
5.4.100.0020.04213.54
5.4.90.0060.03813.50
5.4.80.0100.03513.58
5.4.70.0080.03713.73
5.4.60.0070.03213.64
5.4.50.0080.03513.55
5.4.40.0060.03513.69
5.4.30.0040.03613.49
5.4.20.0050.03613.54
5.4.10.0040.03413.59
5.4.00.0070.03313.25
5.3.290.0060.03812.54
5.3.280.0050.04112.32
5.3.270.0070.03812.54
5.3.260.0060.04112.39
5.3.250.0060.03812.55
5.3.240.0080.03312.36
5.3.230.0060.03612.38
5.3.220.0070.03712.36
5.3.210.0040.03512.29
5.3.200.0060.04012.29
5.3.190.0070.04012.29
5.3.180.0080.03012.39
5.3.170.0080.03312.39
5.3.160.0050.04112.49
5.3.150.0070.04012.49
5.3.140.0090.03412.41
5.3.130.0080.04112.49
5.3.120.0050.03712.45
5.3.110.0060.03812.41
5.3.100.0060.03512.10
5.3.90.0080.04012.29
5.3.80.0030.02512.10
5.3.70.0040.03712.12
5.3.60.0070.03812.22
5.3.50.0060.03412.18
5.3.40.0020.03112.10
5.3.30.0070.02912.08
5.3.20.0030.02911.96
5.3.10.0080.03611.85
5.3.00.0070.03611.88
5.2.170.0050.03710.49
5.2.160.0040.02310.48
5.2.150.0060.02010.48
5.2.140.0030.03310.44
5.2.130.0050.03210.46
5.2.120.0070.03110.40
5.2.110.0090.02310.47
5.2.100.0060.03210.40
5.2.90.0090.03010.45
5.2.80.0030.03310.40
5.2.70.0050.02810.44
5.2.60.0030.03010.43
5.2.50.0040.03310.44
5.2.40.0050.03210.40
5.2.30.0020.03410.40
5.2.20.0060.03010.40
5.2.10.0040.03210.40
5.2.00.0060.02910.40
5.1.60.0070.02410.40
5.1.50.0030.02710.40
5.1.40.0050.02910.40
5.1.30.0050.02110.40
5.1.20.0050.02710.40
5.1.10.0030.02610.40
5.1.00.0030.03010.40
5.0.50.0070.02010.40
5.0.40.0060.02110.40
5.0.30.0030.03210.40
5.0.20.0060.02310.40
5.0.10.0020.01710.40
5.0.00.0030.03110.40
4.4.90.0020.01910.40
4.4.80.0020.01610.40
4.4.70.0030.01810.40
4.4.60.0040.01610.40
4.4.50.0070.01510.40
4.4.40.0010.02710.40
4.4.30.0030.01610.40
4.4.20.0040.01710.40
4.4.10.0000.01910.40
4.4.00.0030.02610.40
4.3.110.0000.02210.40
4.3.100.0070.01210.40
4.3.90.0000.02010.40
4.3.80.0000.03110.40
4.3.70.0020.02010.40
4.3.60.0070.01610.40
4.3.50.0040.01510.40
4.3.40.0010.03110.40
4.3.30.0040.02010.40
4.3.20.0020.01910.40
4.3.10.0010.02010.40
4.3.00.0010.01810.40

preferences:
50.96 ms | 401 KiB | 5 Q