3v4l.org

run code in 300+ PHP versions simultaneously
<?php Echo substr_replace('abcd', 'x', 1, -3); //axbcd Echo substr_replace('abcd', 'x', 1, 0); //axbcd

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)
8.3.60.0120.00918.43
8.3.50.0170.00018.07
8.3.40.0040.01118.50
8.3.30.0070.00718.53
8.3.20.0070.00019.21
8.3.10.0000.01423.48
8.3.00.0090.00020.64
8.2.180.0000.01618.15
8.2.170.0130.00322.96
8.2.160.0100.00322.13
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0090.00318.09
8.2.120.0040.00426.35
8.2.110.0030.00620.26
8.2.100.0040.00817.72
8.2.90.0040.00417.90
8.2.80.0040.00417.97
8.2.70.0040.00417.93
8.2.60.0070.00017.97
8.2.50.0030.00618.10
8.2.40.0000.00719.35
8.2.30.0090.00019.06
8.2.20.0040.00417.91
8.2.10.0000.00717.97
8.2.00.0040.00417.41
8.1.280.0140.00325.92
8.1.270.0000.00920.59
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0060.00619.16
8.1.230.0110.00022.63
8.1.220.0060.00317.74
8.1.210.0000.00818.81
8.1.200.0000.00917.23
8.1.190.0040.00417.23
8.1.180.0000.00718.10
8.1.170.0000.00818.72
8.1.160.0000.00718.76
8.1.150.0040.00418.61
8.1.140.0000.00722.20
8.1.130.0000.00820.11
8.1.120.0000.00717.30
8.1.110.0000.00717.35
8.1.100.0040.00417.38
8.1.90.0030.00317.34
8.1.80.0040.00417.23
8.1.70.0030.00517.33
8.1.60.0040.00417.38
8.1.50.0050.00517.39
8.1.40.0040.00417.37
8.1.30.0080.00017.53
8.1.20.0030.00617.42
8.1.10.0000.00817.34
8.1.00.0050.00317.37
8.0.300.0070.00019.69
8.0.290.0100.00016.63
8.0.280.0000.00818.38
8.0.270.0000.00717.20
8.0.260.0030.00318.34
8.0.250.0040.00416.79
8.0.240.0070.00016.93
8.0.230.0000.00716.80
8.0.220.0000.00716.76
8.0.210.0000.00816.75
8.0.200.0060.00016.88
8.0.190.0040.00416.82
8.0.180.0040.00416.75
8.0.170.0040.00416.67
8.0.160.0040.00416.77
8.0.150.0030.00416.64
8.0.140.0040.00416.59
8.0.130.0030.00313.18
8.0.120.0040.00416.73
8.0.110.0070.00016.67
8.0.100.0080.00016.82
8.0.90.0030.00516.77
8.0.80.0090.00916.76
8.0.70.0030.00516.59
8.0.60.0050.00516.67
8.0.50.0000.00816.80
8.0.30.0150.00416.97
8.0.20.0060.01217.40
8.0.10.0040.00416.75
8.0.00.0140.00316.52
7.4.330.0050.00015.55
7.4.320.0000.00616.35
7.4.300.0000.00616.36
7.4.290.0060.00016.42
7.4.280.0030.00516.47
7.4.270.0040.00416.30
7.4.260.0040.00416.35
7.4.250.0000.00816.25
7.4.240.0000.00716.36
7.4.230.0000.00716.42
7.4.220.0000.00716.54
7.4.210.0100.00916.40
7.4.200.0030.00316.41
7.4.160.0100.00616.41
7.4.140.0110.00717.86
7.4.130.0150.00416.18
7.4.120.0120.00716.42
7.4.110.0060.01516.43
7.4.100.0100.00716.42
7.4.90.0140.00316.24
7.4.80.0100.01019.39
7.4.70.0000.01616.46
7.4.60.0070.01016.22
7.4.50.0090.00916.35
7.4.40.0070.01116.41
7.4.00.0040.01214.97
7.3.330.0030.00312.89
7.3.320.0030.00312.88
7.3.310.0000.00716.22
7.3.300.0060.00016.04
7.3.290.0000.00616.13
7.3.280.0070.00916.18
7.3.260.0110.00716.35
7.3.240.0090.01016.24
7.3.230.0120.00616.17
7.3.210.0070.01016.15
7.3.200.0100.00616.33
7.3.190.0140.00616.22
7.3.180.0090.00716.39
7.3.170.0060.01016.42
7.3.160.0000.01816.27
7.3.10.0070.01016.31
7.3.00.0090.00616.29
7.2.330.0100.01016.49
7.2.320.0110.01416.41
7.2.310.0080.00816.54
7.2.300.0060.01516.21
7.2.290.0000.01616.59
7.2.130.0070.01016.57
7.2.120.0000.01516.56
7.2.110.0170.00515.59
7.2.100.0130.00515.43
7.2.90.0110.01315.45
7.2.80.0230.00915.66
7.2.70.0120.01015.79
7.2.60.0170.00715.77
7.2.50.0200.00615.65
7.2.40.0270.01515.63
7.2.30.0130.01015.56
7.2.20.0500.00515.58
7.2.10.0170.00815.76
7.2.00.0120.00915.72
7.1.250.0030.00715.29
7.1.230.0270.00313.71
7.1.220.0290.00913.82
7.1.210.0360.00713.60
7.1.200.0440.00613.55
7.1.190.0310.00713.66
7.1.180.0370.00013.65
7.1.170.0550.00713.54
7.1.160.0240.00913.71
7.1.150.0260.00713.79
7.1.140.0270.00713.54
7.1.130.0290.01013.84
7.1.120.0260.01213.55
7.1.110.0300.00313.98
7.1.100.0240.00713.48
7.1.90.0310.00613.59
7.1.80.0400.00313.83
7.1.70.0440.00313.26
7.1.60.0560.01931.66
7.1.50.0570.01031.73
7.1.40.0520.01031.78
7.1.30.0630.00331.38
7.1.20.0430.01331.55
7.1.10.0310.00413.96
7.1.00.0350.00313.93
5.6.380.0070.00714.18

preferences:
70.81 ms | 401 KiB | 5 Q