3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "Bbbbbbb Bbb\u{00E4}b\u{00E4} Bbbbb\u{00E4}"; var_dump($str); var_dump(strlen($str)); var_dump(substr($str,0,28));

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)
8.3.60.0070.00718.18
8.3.50.0090.00916.59
8.3.40.0080.00821.64
8.3.30.0060.00818.57
8.3.20.0000.00724.18
8.3.10.0080.00024.66
8.3.00.0040.00426.16
8.2.180.0140.00725.92
8.2.170.0140.00718.77
8.2.160.0070.00722.96
8.2.150.0040.00425.66
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0000.00726.35
8.2.110.0030.00622.21
8.2.100.0090.00317.78
8.2.90.0040.00417.50
8.2.80.0080.00018.74
8.2.70.0080.00017.50
8.2.60.0090.00017.50
8.2.50.0080.00017.63
8.2.40.0050.00318.09
8.2.30.0000.00918.01
8.2.20.0040.00417.98
8.2.10.0060.00320.84
8.2.00.0040.00419.11
8.1.280.0100.00725.92
8.1.270.0060.00323.99
8.1.260.0070.00026.35
8.1.250.0030.00528.09
8.1.240.0040.00423.81
8.1.230.0080.00319.12
8.1.220.0060.00317.74
8.1.210.0040.00418.77
8.1.200.0040.00717.34
8.1.190.0050.00317.10
8.1.180.0000.00919.01
8.1.170.0040.00417.62
8.1.160.0000.00718.93
8.1.150.0000.00718.71
8.1.140.0000.00718.75
8.1.130.0070.00017.33
8.1.120.0000.00717.46
8.1.110.0080.00017.34
8.1.100.0030.00317.30
8.1.90.0050.00217.36
8.1.80.0070.00017.36
8.1.70.0040.00417.22
8.1.60.0050.00517.41
8.1.50.0050.00217.34
8.1.40.0080.00017.50
8.1.30.0000.00817.48
8.1.20.0070.00017.60
8.1.10.0020.00517.49
8.1.00.0040.00417.46
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0060.00018.55
8.0.270.0030.00318.01
8.0.260.0030.00316.76
8.0.250.0000.00716.91
8.0.240.0000.00716.83
8.0.230.0040.00416.91
8.0.220.0070.00016.72
8.0.210.0030.00316.85
8.0.200.0070.00016.88
8.0.190.0080.00016.93
8.0.180.0020.00516.91
8.0.170.0080.00016.77
8.0.160.0000.00716.78
8.0.150.0060.00316.84
8.0.140.0100.00016.69
8.0.130.0030.00313.25
8.0.120.0000.01016.70
8.0.110.0050.00216.86
8.0.100.0050.00316.71
8.0.90.0000.00716.70
8.0.80.0040.01016.79
8.0.70.0020.00516.89
8.0.60.0040.00416.72
8.0.50.0000.00716.86
8.0.30.0100.00716.98
8.0.20.0130.01116.73
8.0.10.0070.00016.89
8.0.00.0100.01016.65
7.4.330.0000.00615.55
7.4.320.0040.00416.38
7.4.300.0000.00616.51
7.4.290.0000.00716.35
7.4.280.0070.00016.54
7.4.270.0000.00716.44
7.4.260.0050.00013.18
7.4.250.0030.00316.51
7.4.240.0000.00716.50
7.4.230.0070.00016.28
7.4.220.0020.00516.49
7.4.210.0070.00816.49
7.4.200.0030.00316.54
7.4.130.0130.00516.44
7.4.120.0080.00816.30
7.4.110.0100.00716.45
7.4.100.0170.00016.48
7.4.90.0100.00716.46
7.4.80.0080.00816.30
7.4.70.0100.00616.46
7.4.60.0060.01216.49
7.4.50.0090.01216.54
7.4.40.0120.00616.40
7.4.30.0060.01016.40
7.4.20.0080.00816.35
7.4.10.0090.00916.44
7.4.00.0070.01016.45
7.3.330.0030.00316.23
7.3.320.0000.00513.04
7.3.310.0000.00716.34
7.3.300.0000.00716.24
7.3.290.0100.00616.20
7.3.260.0110.01016.46
7.3.230.0000.01716.14
7.3.220.0140.00416.30
7.3.210.0160.00316.12
7.3.200.0060.01016.57
7.3.190.0090.01216.32
7.3.180.0140.00316.13
7.3.170.0120.00916.24
7.3.160.0100.00616.37
7.3.150.0030.01216.12
7.3.140.0040.01416.46
7.3.130.0030.01516.35
7.3.120.0050.01116.53
7.3.110.0080.00816.43
7.3.100.0040.01416.45
7.3.90.0030.01516.22
7.3.80.0170.00016.18
7.3.70.0150.00016.43
7.3.60.0080.00816.37
7.3.50.0090.00616.27
7.3.40.0090.00616.09
7.3.30.0060.01216.32
7.3.20.0110.00716.35
7.3.10.0140.00716.28
7.3.00.0090.00916.50
7.2.340.0070.01016.35
7.2.330.0070.01116.38
7.2.320.0150.00416.40
7.2.310.0090.00916.30
7.2.300.0130.00316.57
7.2.290.0130.00316.52
7.2.280.0060.01016.42
7.2.270.0100.00716.25
7.2.260.0120.00416.28
7.2.250.0090.00816.47
7.2.240.0130.00416.54
7.2.230.0200.00316.30
7.2.220.0060.01116.39
7.2.210.0060.01316.16
7.2.200.0090.00616.33
7.2.190.0100.00716.43
7.2.180.0100.00716.59
7.2.170.0120.01216.41
7.2.160.0000.01616.37
7.2.150.0140.00416.36
7.2.140.0190.00616.48
7.2.130.0060.01216.62
7.2.120.0080.00816.40
7.2.110.0090.00916.41
7.2.100.0130.00416.59
7.2.90.0120.00616.46
7.2.80.0150.00916.60
7.2.70.0070.01016.32
7.2.60.0100.00716.45
7.2.50.0130.00316.51
7.2.40.0130.00916.52
7.2.30.0130.00716.46
7.2.20.0140.00416.41
7.2.10.0100.00716.48
7.2.00.0100.00716.55

preferences:
66.6 ms | 400 KiB | 5 Q