3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'hellolleh'; function up($str) { return substr($str,0,(1+strlen($str))/2); } echo up($str);

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)
8.3.70.0110.00418.14
8.3.60.0150.00616.63
8.3.50.0120.00621.99
8.3.40.0150.00018.56
8.3.30.0070.00718.53
8.3.20.0080.00420.40
8.3.10.0060.00321.74
8.3.00.0120.00623.56
8.2.190.0140.00416.58
8.2.180.0060.00916.63
8.2.170.0070.00722.96
8.2.160.0080.00822.11
8.2.150.0040.00424.18
8.2.140.0050.00224.66
8.2.130.0000.00819.64
8.2.120.0060.01226.35
8.2.110.0100.00022.07
8.2.100.0060.00617.78
8.2.90.0040.00419.06
8.2.80.0040.00417.97
8.2.70.0080.00017.50
8.2.60.0040.00417.93
8.2.50.0000.00718.10
8.2.40.0040.00420.46
8.2.30.0040.00419.11
8.2.20.0050.00218.05
8.2.10.0040.00417.92
8.2.00.0030.00517.66
8.1.280.0110.00425.92
8.1.270.0060.00322.14
8.1.260.0000.00828.09
8.1.250.0080.00028.09
8.1.240.0030.00623.84
8.1.230.0070.00417.77
8.1.220.0030.00517.74
8.1.210.0030.00518.77
8.1.200.0090.00017.22
8.1.190.0160.00316.63
8.1.180.0000.00718.10
8.1.170.0000.00818.66
8.1.160.0080.00023.92
8.1.150.0040.00420.19
8.1.140.0040.00419.51
8.1.130.0000.00717.55
8.1.120.0000.00717.45
8.1.110.0000.00717.34
8.1.100.0040.00417.27
8.1.90.0070.00017.38
8.1.80.0000.00717.43
8.1.70.0000.00817.39
8.1.60.0030.00617.54
8.1.50.0060.00317.52
8.1.40.0050.00317.53
8.1.30.0040.00417.69
8.1.20.0060.00317.63
8.1.10.0020.00517.53
8.1.00.0030.00617.44
8.0.300.0000.00718.77
8.0.290.0000.00716.75
8.0.280.0060.00018.44
8.0.270.0070.00017.25
8.0.260.0000.00718.40
8.0.250.0030.00317.05
8.0.240.0000.00716.83
8.0.230.0000.00716.88
8.0.220.0050.00316.92
8.0.210.0020.00516.86
8.0.200.0060.00016.89
8.0.190.0060.00316.72
8.0.180.0040.00416.87
8.0.170.0000.00716.83
8.0.160.0030.00316.79
8.0.150.0080.00016.62
8.0.140.0040.00416.77
8.0.130.0000.00613.26
8.0.120.0050.00316.68
8.0.110.0040.00416.66
8.0.100.0000.00716.63
8.0.90.0030.00316.81
8.0.80.0060.00916.85
8.0.70.0030.00616.68
8.0.60.0000.00716.71
8.0.50.0040.00416.80
8.0.30.0160.00417.05
8.0.20.0110.00917.42
8.0.10.0000.00716.84
8.0.00.0110.01116.60
7.4.330.0030.00315.55
7.4.320.0030.00316.45
7.4.300.0000.00616.55
7.4.290.0000.00816.44
7.4.280.0000.00716.48
7.4.270.0070.00016.58
7.4.260.0000.01016.57
7.4.250.0030.00416.45
7.4.240.0030.00616.48
7.4.230.0030.00316.48
7.4.220.0180.00416.62
7.4.210.0110.00416.54
7.4.200.0030.00316.50
7.4.160.0060.01316.41
7.4.150.0060.01217.40
7.4.140.0120.00717.86
7.4.130.0060.01016.58
7.4.120.0130.00416.47
7.4.110.0120.00916.43
7.4.100.0030.01416.46
7.4.90.0130.00316.48
7.4.80.0090.00619.39
7.4.70.0040.01216.49
7.4.60.0110.00516.48
7.4.50.0040.01116.59
7.4.40.0190.00316.29
7.4.30.0060.01216.48
7.4.10.0040.01514.98
7.4.00.0090.00714.85
7.3.330.0060.00013.13
7.3.320.0000.00513.07
7.3.310.0030.00316.16
7.3.300.0070.00016.30
7.3.290.0110.00616.31
7.3.280.0080.01016.24
7.3.270.0120.00417.40
7.3.260.0070.01016.41
7.3.250.0080.00916.42
7.3.240.0120.01116.53
7.3.230.0140.00316.41
7.3.210.0160.00016.36
7.3.200.0060.01016.35
7.3.190.0110.00816.69
7.3.180.0080.00816.26
7.3.170.0140.00716.31
7.3.160.0090.00616.42
7.3.130.0070.01114.78
7.3.120.0070.00715.00
7.3.110.0030.01514.51
7.3.100.0040.00814.70
7.3.90.0000.01414.78
7.3.80.0090.00615.05
7.3.70.0040.00814.82
7.3.60.0000.01014.71
7.3.50.0090.00614.63
7.3.40.0070.00414.90
7.3.30.0060.00814.75
7.3.20.0000.00916.75
7.3.10.0080.00316.67
7.3.00.0110.00316.60
7.2.330.0080.00816.77
7.2.320.0060.01016.48
7.2.310.0030.01216.82
7.2.300.0030.01316.54
7.2.290.0090.00816.65
7.2.260.0120.00615.05
7.2.250.0100.00714.69
7.2.240.0040.01414.82
7.2.230.0030.01015.02
7.2.220.0110.00015.13
7.2.210.0090.00614.79
7.2.200.0000.01314.96
7.2.190.0030.00715.05
7.2.180.0090.00015.16
7.2.170.0030.01014.99
7.2.160.0140.00014.77
7.2.150.0060.00816.89
7.2.140.0100.00316.91
7.2.130.0060.00316.66
7.2.120.0060.00916.75
7.2.110.0090.00916.94
7.2.100.0030.01416.87
7.2.90.0060.00916.93
7.2.80.0040.01116.79
7.2.70.0000.01516.71
7.2.60.0140.00416.90
7.2.50.0020.01216.96
7.2.40.0030.01316.89
7.2.30.0070.00716.56
7.2.20.0060.00916.73
7.2.10.0060.00916.75
7.2.00.0050.00918.20
7.1.330.0040.01115.69
7.1.320.0030.00915.79
7.1.310.0050.00315.81
7.1.300.0100.00315.82
7.1.290.0000.00815.85
7.1.280.0060.00615.60
7.1.270.0000.01115.76
7.1.260.0060.00915.80
7.1.250.0070.00715.92
7.1.240.0070.01115.82
7.1.230.0030.01415.87
7.1.220.0060.00615.74
7.1.210.0060.00915.75
7.1.200.0060.00615.59
7.1.190.0030.01015.82
7.1.180.0040.00815.98
7.1.170.0040.00415.81
7.1.160.0000.01815.75
7.1.150.0030.01015.70
7.1.140.0030.01015.86
7.1.130.0060.00615.93
7.1.120.0000.01216.04
7.1.110.0000.01515.81
7.1.100.0060.00915.95
7.1.90.0030.01015.55
7.1.80.0090.00615.78
7.1.70.0020.01016.35
7.1.60.0030.00916.49
7.1.50.0070.00715.86
7.1.40.0030.01015.75
7.1.30.0070.00315.54
7.1.20.0030.01315.73
7.1.10.0040.01115.64
7.1.00.0060.04018.97
7.0.330.0030.00715.57
7.0.320.0070.00715.30
7.0.310.0030.01015.27
7.0.300.0040.01415.38
7.0.290.0110.00315.39
7.0.280.0080.00415.36
7.0.270.0030.01315.36
7.0.260.0060.00615.29
7.0.250.0030.01015.47
7.0.240.0030.01315.10
7.0.230.0030.00915.19
7.0.220.0090.00315.49
7.0.210.0070.00715.27
7.0.200.0040.00615.98
7.0.190.0060.00615.20
7.0.180.0090.00615.54
7.0.170.0070.00715.52
7.0.160.0100.00315.36
7.0.150.0000.01315.32
7.0.140.0030.00715.20
7.0.130.0120.00315.56
7.0.120.0090.03318.76
7.0.110.0070.04818.77
7.0.100.0200.02718.79
7.0.90.0020.04018.73
7.0.80.0100.03418.74
7.0.70.0070.03218.87
7.0.60.0080.03118.63
7.0.50.0180.03018.88
7.0.40.0080.03117.65
7.0.30.0020.03517.77
7.0.20.0070.03017.86
7.0.10.0060.03317.83
7.0.00.0100.03017.77
5.6.400.0030.00514.20
5.6.390.0090.00914.11
5.6.380.0090.00614.45
5.6.370.0030.00914.09
5.6.360.0030.00614.37
5.6.350.0080.00814.54
5.6.340.0100.00314.50
5.6.330.0000.00914.23
5.6.320.0000.00814.58
5.6.310.0070.00714.19
5.6.300.0060.00314.25
5.6.290.0000.01114.23
5.6.280.0040.01214.61
5.6.270.0120.04117.56
5.6.260.0100.04617.65
5.6.250.0030.04517.45
5.6.240.0050.03717.72
5.6.230.0080.03517.54
5.6.220.0120.03217.67
5.6.210.0120.03717.53
5.6.200.0070.04317.60
5.6.190.0070.03217.68
5.6.180.0070.03317.50
5.6.170.0150.03017.52
5.6.160.0070.03617.59
5.6.150.0080.03217.52
5.6.140.0100.03317.76
5.6.130.0060.03517.61
5.6.120.0100.03417.73
5.6.110.0090.03417.80
5.6.100.0100.03917.51
5.6.90.0100.03517.69
5.6.80.0090.03417.31
5.6.70.0120.02717.27
5.6.60.0120.03017.46
5.6.50.0050.03717.06
5.6.40.0050.03317.36
5.6.30.0050.03217.28
5.6.20.0110.03017.24
5.6.10.0050.03317.14
5.6.00.0050.03617.25

preferences:
74.69 ms | 401 KiB | 5 Q