3v4l.org

run code in 300+ PHP versions simultaneously
<?php // 7f ef ff ff ff ff ff ff (Max double) // https://en.wikipedia.org/wiki/Double-precision_floating-point_format#Double-precision_examples // 7f = 127 // ef = 239 // ff = 255 $str = chr(127) . chr(239) . ' ' . str_repeat(chr(255) . chr(255) . ' ', 3); echo (string) unpack('d', "7fef ffff ffff ffff")[1], PHP_EOL;

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)
8.3.60.0070.00718.30
8.3.50.0140.00522.84
8.3.40.0150.00018.57
8.3.30.0140.00718.67
8.3.20.0040.00420.16
8.3.10.0000.00721.77
8.3.00.0050.00319.68
8.2.180.0090.00618.18
8.2.170.0120.00322.96
8.2.160.0100.00319.20
8.2.150.0030.00524.18
8.2.140.0040.00424.66
8.2.130.0070.00020.39
8.2.120.0070.00026.35
8.2.110.0070.00419.39
8.2.100.0030.00720.53
8.2.90.0040.00418.03
8.2.80.0040.00419.46
8.2.70.0030.00717.91
8.2.60.0000.00818.05
8.2.50.0000.00918.10
8.2.40.0040.00420.42
8.2.30.0000.00719.34
8.2.20.0030.00517.75
8.2.10.0000.00718.13
8.2.00.0020.00518.02
8.1.280.0100.01025.92
8.1.270.0040.00423.91
8.1.260.0040.00428.09
8.1.250.0040.00428.09
8.1.240.0060.00321.99
8.1.230.0030.00719.07
8.1.220.0000.00817.77
8.1.210.0000.00818.77
8.1.200.0060.00317.22
8.1.190.0080.00017.23
8.1.180.0060.00318.10
8.1.170.0060.00318.54
8.1.160.0040.00418.95
8.1.150.0040.00418.72
8.1.140.0040.00419.56
8.1.130.0000.00717.68
8.1.120.0000.00717.45
8.1.110.0040.00417.36
8.1.100.0040.00417.44
8.1.90.0030.00517.42
8.1.80.0080.00017.39
8.1.70.0030.00317.40
8.1.60.0040.00417.63
8.1.50.0050.00317.41
8.1.40.0000.00817.45
8.1.30.0040.00817.65
8.1.20.0080.00017.58
8.1.10.0040.00417.43
8.1.00.0040.00417.51
8.0.300.0050.00219.70
8.0.290.0060.00316.75
8.0.280.0000.00718.49
8.0.270.0000.00717.25
8.0.260.0030.00317.32
8.0.250.0000.00716.89
8.0.240.0030.00316.96
8.0.230.0000.00716.91
8.0.220.0070.00016.86
8.0.210.0080.00016.95
8.0.200.0030.00316.99
8.0.190.0000.01016.92
8.0.180.0000.00816.87
8.0.170.0050.00316.80
8.0.160.0050.00216.96
8.0.150.0070.00016.78
8.0.140.0070.00016.77
8.0.130.0070.00013.36
8.0.120.0000.00816.88
8.0.110.0050.00316.86
8.0.100.0040.00416.86
8.0.90.0000.00716.81
8.0.80.0110.00516.78
8.0.70.0040.00416.70
8.0.60.0070.00016.88
8.0.50.0050.00216.78
8.0.30.0080.01017.16
8.0.20.0090.01017.40
8.0.10.0040.00417.08
8.0.00.0160.00016.76
7.4.330.0030.00315.08
7.4.320.0000.00616.62
7.4.300.0060.00016.49
7.4.290.0000.00816.50
7.4.280.0000.00816.50
7.4.270.0000.00716.58
7.4.260.0000.00716.43
7.4.250.0000.00816.57
7.4.240.0040.00416.36
7.4.230.0030.00316.57
7.4.220.0120.01216.70
7.4.210.0110.00716.64
7.4.200.0070.00016.49
7.4.160.0070.01316.48
7.4.150.0030.01417.40
7.4.140.0100.00717.86
7.4.130.0080.01116.66
7.4.120.0140.00616.56
7.4.110.0090.00916.71
7.4.100.0090.01216.59
7.4.90.0150.00316.66
7.4.80.0090.00819.39
7.4.70.0030.01416.47
7.4.60.0100.00716.55
7.4.50.0080.00616.38
7.4.40.0080.00816.59
7.4.30.0090.01116.52
7.4.10.0030.00915.05
7.4.00.0030.01414.80
7.3.330.0030.00313.13
7.3.320.0000.00513.20
7.3.310.0000.00716.11
7.3.300.0040.00416.11
7.3.290.0080.00916.27
7.3.280.0070.01016.24
7.3.270.0030.01317.40
7.3.260.0070.01216.46
7.3.250.0080.01116.17
7.3.240.0100.00816.35
7.3.230.0030.01316.39
7.3.210.0100.00916.38
7.3.200.0050.01216.50
7.3.190.0080.01216.26
7.3.180.0060.01216.45
7.3.170.0100.01016.35
7.3.160.0060.00916.41
7.3.130.0090.00914.85
7.3.120.0030.01414.88
7.3.110.0070.01014.62
7.3.100.0040.00714.43
7.3.90.0000.01414.82
7.3.80.0050.00514.93
7.3.70.0030.01214.78
7.3.60.0050.00514.45
7.3.50.0060.00914.61
7.3.40.0040.00814.71
7.3.30.0040.00814.54
7.3.20.0070.00716.66
7.3.10.0090.00716.36
7.3.00.0060.00916.41
7.2.330.0100.00716.71
7.2.320.0050.01116.71
7.2.310.0070.01016.63
7.2.300.0110.01116.48
7.2.290.0160.00016.66
7.2.260.0090.00914.99
7.2.250.0070.01115.07
7.2.240.0030.00915.03
7.2.230.0060.00614.77
7.2.220.0080.00815.10
7.2.210.0040.00714.96
7.2.200.0000.01615.24
7.2.190.0130.00314.75
7.2.180.0030.01315.12
7.2.170.0090.00314.95
7.2.160.0030.01415.24
7.2.150.0120.00416.89
7.2.140.0060.00916.97
7.2.130.0080.00716.95
7.2.120.0090.00916.88
7.2.110.0030.00916.90
7.2.100.0060.00716.81
7.2.90.0080.00316.90
7.2.80.0020.01316.85
7.2.70.0100.00317.01
7.2.60.0080.00916.76
7.2.50.0080.00816.73
7.2.40.0060.01016.80
7.2.30.0050.00916.99
7.2.20.0080.00616.78
7.2.10.0060.01116.95
7.2.00.0040.00917.70
7.1.330.0130.00315.77
7.1.320.0040.01115.71
7.1.310.0080.00315.87
7.1.300.0070.01015.78
7.1.290.0110.00615.84
7.1.280.0100.00315.75
7.1.270.0030.01315.80
7.1.260.0070.00715.87
7.1.250.0080.00815.77
7.1.240.0090.00315.57
7.1.230.0090.00615.70
7.1.220.0030.01315.57
7.1.210.0060.00915.88
7.1.200.0100.00015.86
7.1.190.0090.00615.82
7.1.180.0090.00415.88
7.1.170.0070.00715.55
7.1.160.0000.01415.96
7.1.150.0060.00615.91
7.1.140.0000.01015.74
7.1.130.0040.01115.75
7.1.120.0000.00815.71
7.1.110.0090.00615.45
7.1.100.0060.00615.93
7.1.90.0060.00315.73
7.1.80.0000.01415.89
7.1.70.0060.00616.47
7.1.60.0070.00717.79
7.1.50.0000.01315.76
7.1.40.0060.00815.78
7.1.30.0070.00715.81
7.1.20.0130.00015.77
7.1.10.0000.01315.63
7.1.00.0040.04219.11
7.0.330.0030.01015.51
7.0.320.0000.01115.18
7.0.310.0000.01115.14
7.0.300.0030.00715.33
7.0.290.0070.01015.35
7.0.280.0030.01315.29
7.0.270.0000.01415.23
7.0.260.0000.01315.28
7.0.250.0090.00615.28
7.0.240.0040.00415.35
7.0.230.0000.00815.36
7.0.220.0030.01015.56
7.0.210.0070.01115.17
7.0.200.0170.00815.07
7.0.190.0030.00915.36
7.0.180.0070.00415.12
7.0.170.0030.01015.57
7.0.160.0120.00615.32
7.0.150.0090.00915.39
7.0.140.0000.00915.38
7.0.130.0060.00315.50
7.0.120.0130.00315.42
7.0.110.0060.01015.52
7.0.100.0100.00715.10
7.0.90.0060.00615.14
7.0.80.0030.00615.39
7.0.70.0240.02717.64
7.0.60.0150.03417.57
7.0.50.0130.03617.79
7.0.40.0080.03216.74
7.0.30.0180.04016.89
7.0.20.0130.03916.96
7.0.10.0130.03716.93
7.0.00.0200.04316.91
5.6.400.0070.00714.54
5.6.390.0060.00914.28
5.6.380.0030.01014.30
5.6.370.0040.01114.06
5.6.360.0090.00014.52
5.6.350.0090.00914.43
5.6.340.0160.00014.42
5.6.330.0050.00514.09
5.6.320.0100.00314.29
5.6.310.0000.01414.45
5.6.300.0000.01214.32
5.6.290.0040.00414.40
5.6.280.0090.00614.47
5.6.270.0000.01614.18
5.6.260.0060.00914.39
5.6.250.0060.00914.52
5.6.240.0050.00514.32
5.6.230.0000.01314.60
5.6.220.0120.03817.54
5.6.210.0140.03417.55
5.6.200.0190.03017.72
5.6.190.0160.03017.77
5.6.180.0100.03817.68
5.6.170.0130.03517.53
5.6.160.0200.04017.72
5.6.150.0220.04017.58
5.6.140.0180.03617.66
5.6.130.0200.04417.95
5.6.120.0330.03517.77
5.6.110.0250.04017.60
5.6.100.0230.03617.68
5.6.90.0300.03517.63
5.6.80.0270.03017.47
5.6.70.0270.03217.21
5.6.60.0300.02717.38
5.6.50.0240.03317.34
5.6.40.0230.03317.25
5.6.30.0260.02617.40
5.6.20.0230.03217.41
5.6.10.0250.03117.25
5.6.00.0220.03617.30
5.5.380.0080.00314.52
5.5.370.0030.01313.98
5.5.360.0220.02917.30
5.5.350.0170.03217.41
5.5.340.0220.03417.57
5.5.330.0100.03017.50
5.5.320.0100.03417.70
5.5.310.0150.04117.53
5.5.300.0240.03817.59
5.5.290.0240.04017.48
5.5.280.0200.03417.59
5.5.270.0280.03317.68
5.5.260.0240.03717.74
5.5.250.0300.03017.39
5.5.240.0260.03317.20
5.5.230.0230.04117.28
5.5.220.0280.03117.33
5.5.210.0230.03317.28
5.5.200.0200.03517.15
5.5.190.0270.03017.13
5.5.180.0280.03217.19
5.5.170.0080.00414.21
5.5.160.0230.03117.24
5.5.150.0250.03017.01
5.5.140.0280.03017.24
5.5.130.0230.03517.12
5.5.120.0230.03117.22
5.5.110.0250.03017.24
5.5.100.0320.02417.22
5.5.90.0270.02517.05
5.5.80.0180.03317.15
5.5.70.0200.03317.10
5.5.60.0230.03017.23
5.5.50.0270.02617.21
5.5.40.0230.03217.03
5.5.30.0220.03116.90
5.5.20.0240.03517.28
5.5.10.0240.03117.04
5.5.00.0170.04217.12

preferences:
59.81 ms | 401 KiB | 5 Q