3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'a quick red fox jumped over the lazy brown dog'; $charFirst = substr($string, 0, 1); $charLast = substr($string, strlen($string) - 1, 1); echo $charFirst . PHP_EOL; echo $charLast . 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)
8.3.70.0120.00316.58
8.3.60.0120.00916.50
8.3.50.0140.00321.80
8.3.40.0200.00018.71
8.3.30.0140.00018.96
8.3.20.0050.00320.35
8.3.10.0000.00923.55
8.3.00.0050.00319.56
8.2.180.0060.00918.18
8.2.170.0140.00022.96
8.2.160.0100.00320.37
8.2.150.0070.00024.18
8.2.140.0000.00724.66
8.2.130.0070.00026.16
8.2.120.0030.00519.23
8.2.110.0060.00321.95
8.2.100.0060.00617.72
8.2.90.0000.00919.22
8.2.80.0040.00417.97
8.2.70.0050.00317.50
8.2.60.0130.00017.88
8.2.50.0060.00318.07
8.2.40.0090.00020.00
8.2.30.0040.00418.12
8.2.20.0040.00417.68
8.2.10.0000.00718.07
8.2.00.0040.00417.79
8.1.280.0170.00725.92
8.1.270.0030.00623.97
8.1.260.0030.00526.35
8.1.250.0040.00428.09
8.1.240.0060.00323.97
8.1.230.0040.00719.01
8.1.220.0030.00517.79
8.1.210.0080.00018.77
8.1.200.0040.00417.36
8.1.190.0040.00417.23
8.1.180.0030.00618.10
8.1.170.0080.00018.46
8.1.160.0040.00421.93
8.1.150.0000.00718.46
8.1.140.0070.00017.26
8.1.130.0030.00317.69
8.1.120.0020.00517.42
8.1.110.0000.00817.37
8.1.100.0030.00317.29
8.1.90.0000.00717.41
8.1.80.0040.00417.41
8.1.70.0000.00817.32
8.1.60.0080.00017.51
8.1.50.0030.00517.42
8.1.40.0000.00817.45
8.1.30.0030.00617.59
8.1.20.0000.00817.64
8.1.10.0050.00217.54
8.1.00.0000.00917.50
8.0.300.0030.00518.77
8.0.290.0000.00716.63
8.0.280.0030.00318.34
8.0.270.0070.00017.21
8.0.260.0030.00317.26
8.0.250.0000.00616.83
8.0.240.0030.00616.84
8.0.230.0030.00616.79
8.0.220.0030.00316.89
8.0.210.0000.00716.79
8.0.200.0030.00316.96
8.0.190.0000.00716.84
8.0.180.0080.00016.94
8.0.170.0030.00616.91
8.0.160.0030.00316.88
8.0.150.0000.00816.78
8.0.140.0000.00916.73
8.0.130.0030.00313.27
8.0.120.0000.00716.90
8.0.110.0040.00416.78
8.0.100.0040.00417.01
8.0.90.0070.00016.71
8.0.80.0120.00916.80
8.0.70.0000.00716.84
8.0.60.0050.00216.91
8.0.50.0000.00816.95
8.0.30.0130.00716.99
8.0.20.0090.01017.40
8.0.10.0040.00416.81
8.0.00.0100.00816.58
7.4.330.0050.00015.03
7.4.320.0020.00516.43
7.4.300.0030.00616.61
7.4.290.0050.00316.46
7.4.280.0030.00616.42
7.4.270.0040.00416.46
7.4.260.0070.00016.32
7.4.250.0070.00016.48
7.4.240.0030.00316.48
7.4.230.0030.00316.54
7.4.220.0070.01316.55
7.4.210.0090.01216.64
7.4.200.0070.00016.64
7.4.160.0080.00816.48
7.4.150.0140.01117.40
7.4.140.0070.01017.86
7.4.130.0060.01116.53
7.4.120.0070.01016.33
7.4.110.0130.00316.61
7.4.100.0120.01216.52
7.4.90.0100.00716.57
7.4.80.0100.00719.39
7.4.70.0080.00816.55
7.4.60.0120.00616.51
7.4.50.0040.00416.20
7.4.40.0110.01116.36
7.4.30.0070.01716.50
7.4.00.0060.01014.80
7.3.330.0050.00013.07
7.3.320.0000.00513.19
7.3.310.0030.00516.32
7.3.300.0070.00016.23
7.3.290.0140.00316.38
7.3.280.0070.01016.30
7.3.270.0110.00817.40
7.3.260.0130.01216.29
7.3.250.0130.00316.49
7.3.240.0150.00416.35
7.3.230.0000.01616.39
7.3.210.0080.00816.49
7.3.200.0120.00419.39
7.3.190.0120.00316.41
7.3.180.0100.00716.36
7.3.170.0120.00416.46
7.3.160.0030.01316.40
7.3.120.0080.01014.66
7.3.110.0030.01414.57
7.3.100.0090.00914.75
7.3.90.0060.01014.81
7.3.80.0000.00914.81
7.3.70.0060.00914.98
7.3.60.0090.00614.84
7.3.50.0030.00614.91
7.3.40.0090.00614.67
7.3.30.0040.00414.68
7.3.20.0040.01416.89
7.3.10.0050.00816.47
7.3.00.0020.01416.54
7.2.330.0110.00716.40
7.2.320.0100.00616.68
7.2.310.0070.01016.68
7.2.300.0100.00716.73
7.2.290.0060.00916.70
7.2.250.0040.01515.03
7.2.240.0130.00714.90
7.2.230.0090.00915.20
7.2.220.0070.01114.70
7.2.210.0040.01114.96
7.2.200.0060.01014.91
7.2.190.0060.00914.99
7.2.180.0070.00715.15
7.2.170.0090.00615.10
7.2.130.0080.00016.87
7.2.120.0030.00616.60
7.2.110.0060.00616.96
7.2.100.0070.00716.61
7.2.90.0170.00016.95
7.2.80.0120.00616.73
7.2.70.0070.00716.94
7.2.60.0060.00616.48
7.2.50.0140.00316.68
7.2.40.0070.00716.91
7.2.30.0120.00316.71
7.2.20.0030.01016.82
7.2.10.0040.00716.96
7.2.00.0020.01018.19
7.1.330.0040.01115.62
7.1.320.0040.00715.47
7.1.310.0030.01415.74
7.1.300.0110.00415.73
7.1.290.0000.00915.85
7.1.280.0000.01015.92
7.1.270.0000.01315.80
7.1.260.0040.01116.03
7.1.250.0070.01115.70
7.1.240.0040.01115.73
7.1.230.0060.01015.64
7.1.220.0040.00815.79
7.1.210.0050.00315.70
7.1.200.0100.00315.64
7.1.190.0060.00315.70
7.1.180.0130.00315.78
7.1.170.0000.01415.68
7.1.160.0030.00315.57
7.1.150.0060.01016.00
7.1.140.0070.01015.88
7.1.130.0120.00315.70
7.1.120.0060.01215.70
7.1.110.0000.01215.71
7.1.100.0060.00616.96
7.1.90.0120.00615.88
7.1.80.0090.00615.80
7.1.70.0040.00716.45
7.1.60.0040.01617.74
7.1.50.0060.01116.17
7.1.40.0110.00315.73
7.1.30.0110.00415.82
7.1.20.0090.00615.83
7.1.10.0040.01115.74
7.1.00.0080.03819.02
7.0.330.0030.01015.45
7.0.320.0030.00715.20
7.0.310.0040.00415.53
7.0.300.0110.00415.38
7.0.290.0090.00315.04
7.0.280.0120.00615.14
7.0.270.0090.00615.37
7.0.260.0120.00015.27
7.0.250.0150.00015.33
7.0.240.0110.00015.45
7.0.230.0090.00315.52
7.0.220.0170.00315.31
7.0.210.0140.00415.34
7.0.200.0090.00416.10
7.0.190.0040.00815.23
7.0.180.0130.00315.18
7.0.170.0110.00715.22
7.0.160.0000.01415.52
7.0.150.0060.00915.57
7.0.140.0050.04018.58
7.0.130.0030.01015.31
7.0.120.0030.01115.32
7.0.110.0080.00015.29
7.0.100.0030.00715.43
7.0.90.0030.01015.48
7.0.80.0030.01015.29
7.0.70.0050.00515.35
7.0.60.0020.03717.61
7.0.50.0050.04516.75
7.0.40.0030.03416.72
7.0.30.0170.04316.96
7.0.20.0200.04116.82
7.0.10.0200.03516.81
7.0.00.0090.04516.65
5.6.380.0100.00314.18
5.6.370.0070.00314.10
5.6.360.0060.00613.84
5.6.350.0030.00714.18
5.6.340.0030.00514.30
5.6.330.0000.00714.25
5.6.320.0040.00414.63
5.6.310.0050.00514.25
5.6.300.0040.01214.28
5.6.290.0030.00814.21
5.6.280.0110.03317.68
5.6.270.0090.00614.30
5.6.260.0060.00614.36
5.6.250.0100.00314.38
5.6.240.0070.00714.18
5.6.230.0040.00914.19
5.6.220.0110.00414.02
5.6.210.0100.02817.37
5.6.200.0000.04816.02
5.6.190.0030.04717.20
5.6.180.0010.03617.27
5.6.170.0150.03217.38
5.6.160.0080.04117.29
5.6.150.0050.04516.20
5.6.140.0070.04516.18
5.6.130.0050.02216.15
5.6.120.0080.03517.58
5.6.110.0050.03217.51
5.6.100.0030.04817.65
5.6.90.0060.04417.65
5.6.80.0080.04017.30
5.6.70.2080.02317.23
5.6.60.0030.00514.18
5.6.50.0060.00314.16
5.6.40.0000.01014.37
5.6.30.0030.00614.26
5.6.20.0080.00014.05
5.6.10.0030.00614.02
5.6.00.0070.00314.05
5.5.380.0100.00011.09
5.5.370.0040.00411.41
5.5.360.0030.00610.99
5.5.350.0060.03815.54
5.5.340.0030.04514.58
5.5.330.0110.04015.56
5.5.320.0130.03115.51
5.5.310.0190.03015.83
5.5.300.0050.04814.62
5.5.290.0140.02314.31
5.5.280.0100.03715.88
5.5.270.0030.04416.00
5.5.260.0050.04715.98
5.5.250.0080.04315.73
5.5.240.0070.02815.42
5.5.230.0000.01010.83
5.5.220.0000.00811.05
5.5.210.0040.00810.84
5.5.200.0070.00310.91
5.5.190.0060.00610.99
5.5.180.0070.00310.77
5.5.170.0060.00310.84
5.5.160.0070.00311.02
5.5.150.0030.00510.86
5.5.140.0000.00711.05
5.5.130.0040.00710.98
5.5.120.0070.00311.14
5.5.110.0080.00010.90
5.5.100.0080.00410.99
5.5.90.0030.01010.75
5.5.80.0070.00511.04
5.5.70.0040.00410.61
5.5.60.0080.00611.02
5.5.50.0030.00610.74
5.5.40.0050.00510.95
5.5.30.0030.00511.03
5.5.20.0040.00410.99
5.5.10.0040.00410.93
5.5.00.0050.00311.00
5.4.450.0230.01827.38
5.4.440.0160.02627.45
5.4.430.0200.03027.21
5.4.420.0200.02427.36
5.4.410.0110.02227.41
5.4.400.0320.02527.25
5.4.390.0230.02027.33
5.4.380.0070.03014.73
5.4.370.0090.03014.64
5.4.360.0050.02914.87
5.4.350.0170.02314.79
5.4.340.0050.03014.75
5.4.330.0030.00310.77
5.4.320.0070.02011.62
5.4.310.0030.02311.50
5.4.300.0040.02611.50
5.4.290.0070.02111.65
5.4.280.0050.02211.63
5.4.270.0040.02611.59
5.4.260.0060.01911.64
5.4.250.0070.02111.59
5.4.240.0070.02311.62
5.4.230.0050.02411.65
5.4.220.0040.02011.50
5.4.210.0050.01911.69
5.4.200.0050.02611.60
5.4.190.0040.02511.56
5.4.180.0040.02411.62
5.4.170.0070.01911.68
5.4.160.0040.02011.50
5.4.150.0080.02111.67
5.4.140.0030.02311.48
5.4.130.0050.01811.38
5.4.120.0090.02111.52
5.4.110.0040.02011.48
5.4.100.0040.02111.55
5.4.90.0040.02711.27
5.4.80.0090.02211.34
5.4.70.0040.02211.44
5.4.60.0060.02211.45
5.4.50.0080.02011.48
5.4.40.0070.02011.49
5.4.30.0020.02311.48
5.4.20.0040.02411.33
5.4.10.0040.02011.30
5.4.00.0030.02111.22
5.3.290.0050.02111.63
5.3.280.0060.01811.56
5.3.270.0050.02111.57
5.3.260.0050.02111.55
5.3.250.0030.02211.54
5.3.240.0070.02011.51
5.3.230.0060.02311.48
5.3.220.0050.02211.51
5.3.210.0050.02411.46
5.3.200.0070.02211.50
5.3.190.0050.02111.48
5.3.180.0060.02011.61
5.3.170.0040.02311.59
5.3.160.0040.02011.57
5.3.150.0050.02111.59
5.3.140.0070.01911.56
5.3.130.0060.02011.58
5.3.120.0050.02311.54
5.3.110.0070.02011.54
5.3.100.0070.02011.26
5.3.90.0070.01811.29
5.3.80.0050.02011.20
5.3.70.0040.02111.18
5.3.60.0060.02211.23
5.3.50.0050.02311.15
5.3.40.0050.02311.15
5.3.30.0030.02711.10
5.3.20.0050.01911.09
5.3.10.0040.02010.97
5.3.00.0090.02310.96
5.2.170.0040.0249.72
5.2.160.0050.0199.71
5.2.150.0040.0199.72
5.2.140.0050.0189.71
5.2.130.0060.0179.69
5.2.120.0070.0179.70
5.2.110.0030.0209.70
5.2.100.0030.0189.70
5.2.90.0070.0179.70
5.2.80.0020.0199.69
5.2.70.0040.0199.70
5.2.60.0060.0169.67
5.2.50.0040.0159.66
5.2.40.0030.0169.64
5.2.30.0020.0189.63
5.2.20.0050.0199.63
5.2.10.0060.0149.59
5.2.00.0040.0169.51
5.1.60.0070.0169.16
5.1.50.0060.0139.15
5.1.40.0030.0159.15
5.1.30.0070.0139.32
5.1.20.0030.0179.33
5.1.10.0020.0189.20
5.1.00.0020.0169.19
5.0.50.0040.0108.43
5.0.40.0040.0118.36
5.0.30.0040.0178.27
5.0.20.0020.0148.26
5.0.10.0050.0108.24
5.0.00.0060.0158.24
4.4.90.0020.0147.52
4.4.80.0050.0087.50
4.4.70.0020.0117.51
4.4.60.0010.0137.50
4.4.50.0020.0117.51
4.4.40.0040.0147.48
4.4.30.0030.0087.51
4.4.20.0040.0097.55
4.4.10.0010.0117.55
4.4.00.0040.0137.51
4.3.110.0020.0107.46
4.3.100.0010.0117.46
4.3.90.0020.0127.44
4.3.80.0010.0167.42
4.3.70.0030.0097.44
4.3.60.0020.0097.44
4.3.50.0030.0117.44
4.3.40.0020.0187.40
4.3.30.0040.0096.77
4.3.20.0020.0096.76
4.3.10.0040.0096.74
4.3.00.0050.00927.01

preferences:
43.19 ms | 401 KiB | 5 Q