3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "087777807209"; // Original string $replacement = "62"; // What you want to replace the last character with // The final string $final = $replacement.substr($string, 0, 1); echo $final;

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)
8.3.60.0070.00716.38
8.3.50.0100.01018.18
8.3.40.0110.00418.48
8.3.30.0120.00318.42
8.3.20.0040.00420.22
8.3.10.0000.00823.51
8.3.00.0040.00423.66
8.2.180.0140.00718.14
8.2.170.0070.00719.00
8.2.160.0030.01022.96
8.2.150.0000.00725.66
8.2.140.0080.00024.66
8.2.130.0000.00720.52
8.2.120.0050.00226.35
8.2.110.0110.00019.27
8.2.100.0040.00818.09
8.2.90.0050.00319.31
8.2.80.0080.00017.97
8.2.70.0000.00817.63
8.2.60.0070.00017.93
8.2.50.0030.00518.10
8.2.40.0040.00420.48
8.2.30.0040.00421.02
8.2.20.0000.00818.09
8.2.10.0070.00018.05
8.2.00.0000.00718.16
8.1.280.0140.00725.92
8.1.270.0090.00622.17
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0040.00422.75
8.1.230.0050.00620.43
8.1.220.0030.00517.74
8.1.210.0050.00318.77
8.1.200.0080.00017.34
8.1.190.0040.00417.25
8.1.180.0000.00818.10
8.1.170.0040.00418.55
8.1.160.0040.00418.68
8.1.150.0030.00520.06
8.1.140.0000.00718.97
8.1.130.0050.00318.93
8.1.120.0040.00417.28
8.1.110.0060.00317.34
8.1.100.0000.00717.38
8.1.90.0000.00717.41
8.1.80.0040.00417.35
8.1.70.0070.00017.43
8.1.60.0030.00517.39
8.1.50.0030.00517.41
8.1.40.0000.00817.39
8.1.30.0040.00417.54
8.1.20.0040.00417.54
8.1.10.0030.00617.50
8.1.00.0000.00717.29
8.0.300.0000.00719.09
8.0.290.0000.00716.63
8.0.280.0070.00018.41
8.0.270.0000.00717.16
8.0.260.0040.00418.89
8.0.250.0060.00017.00
8.0.240.0060.00316.91
8.0.230.0000.00716.96
8.0.220.0040.00416.79
8.0.210.0040.00416.86
8.0.200.0000.00716.91
8.0.190.0050.00316.95
8.0.180.0040.00416.96
8.0.170.0030.00316.92
8.0.160.0030.00316.83
8.0.150.0000.00716.81
8.0.140.0070.00316.82
8.0.130.0030.00313.32
8.0.120.0000.00716.78
8.0.110.0040.00416.87
8.0.100.0040.00416.94
8.0.90.0030.00516.82
8.0.80.0090.00616.90
8.0.70.0070.00016.82
8.0.60.0000.00816.75
8.0.50.0040.00316.87
8.0.30.0100.00916.94
8.0.20.0080.01017.40
8.0.10.0050.00216.73
8.0.00.0150.00616.53
7.4.330.0020.00215.55
7.4.320.0000.00616.57
7.4.300.0030.00316.42
7.4.290.0060.00316.39
7.4.280.0040.00316.52
7.4.270.0000.00716.54
7.4.260.0030.00616.52
7.4.250.0000.00816.34
7.4.240.0030.00316.43
7.4.230.0040.00416.50
7.4.220.0120.01516.46
7.4.210.0110.00716.46
7.4.200.0070.00016.36
7.4.160.0120.00316.32
7.4.150.0070.01017.40
7.4.140.0080.01117.86
7.4.130.0180.00416.49
7.4.120.0080.01016.43
7.4.110.0130.00316.34
7.4.100.0110.01216.63
7.4.90.0090.00916.48
7.4.80.0000.01619.39
7.4.70.0120.01016.34
7.4.60.0040.01216.48
7.4.50.0060.00916.57
7.4.40.0060.01116.36
7.4.30.0060.01016.32
7.4.00.0030.01414.67
7.3.330.0000.00512.91
7.3.320.0000.00613.09
7.3.310.0000.00616.23
7.3.300.0000.00616.24
7.3.290.0000.00716.04
7.3.280.0080.00916.16
7.3.270.0030.01317.40
7.3.260.0100.00916.26
7.3.250.0070.01016.15
7.3.240.0140.00416.32
7.3.230.0070.01016.49
7.3.210.0070.01116.34
7.3.200.0100.00716.38
7.3.190.0070.01016.26
7.3.180.0130.00316.27
7.3.170.0070.00716.48
7.3.160.0100.00716.56
7.3.120.0100.00414.67
7.3.110.0100.00714.56
7.3.100.0080.00014.69
7.3.90.0060.00314.80
7.3.80.0070.00714.69
7.3.70.0030.00614.84
7.3.60.0000.01314.81
7.3.50.0030.00614.65
7.3.40.0030.00914.46
7.3.30.0060.00614.93
7.3.20.0030.00916.40
7.3.10.0070.00416.15
7.3.00.0130.00316.41
7.2.330.0000.01716.73
7.2.320.0130.00316.66
7.2.310.0150.00616.70
7.2.300.0120.00616.60
7.2.290.0130.01016.41
7.2.240.0090.00015.18
7.2.230.0060.00315.00
7.2.220.0100.00315.10
7.2.210.0070.00314.67
7.2.200.0100.00315.12
7.2.190.0030.00914.77
7.2.180.0080.00614.91
7.2.170.0030.01314.64
7.2.160.0100.00315.00
7.2.150.0070.00316.88
7.2.140.0130.00016.86
7.2.130.0040.01216.78
7.2.120.0030.01016.96
7.2.110.0030.01016.91
7.2.100.0070.00416.70
7.2.90.0040.00816.80
7.2.80.0060.01016.84
7.2.70.0040.00816.64
7.2.60.0090.01316.79
7.2.50.0110.00316.91
7.2.40.0060.00616.89
7.2.30.0060.00617.02
7.2.20.0040.00816.89
7.2.10.0040.00716.79
7.2.00.0100.00716.91
7.1.330.0030.00915.49
7.1.320.0080.00415.54
7.1.310.0040.01216.00
7.1.300.0070.00715.77
7.1.290.0060.00615.86
7.1.280.0000.01115.82
7.1.270.0040.00915.43
7.1.260.0060.00615.86
7.1.250.0030.00815.58
7.1.200.0090.00315.48
7.1.110.0500.00716.42
7.1.100.0460.00416.48
7.1.90.0630.00715.92
7.1.80.0780.00316.19
7.1.70.0620.01315.20
7.1.60.0840.01033.20
7.1.50.0820.00733.15
7.1.40.0830.01032.62
7.1.30.0800.02032.53
7.1.20.1280.01332.72
7.1.10.0370.01014.76
7.1.00.0480.00314.89
7.0.250.0570.01315.98
7.0.240.0510.01316.08
7.0.230.0460.00715.98
7.0.220.0680.01015.79
7.0.210.0640.01314.59
7.0.200.0730.01314.97
7.0.190.0740.01014.86
7.0.180.0620.01314.31
7.0.170.0430.01114.31
7.0.160.0410.01014.40
7.0.150.0350.01014.25
7.0.140.0380.01314.37
7.0.130.0390.01314.71
7.0.120.0430.00714.59
7.0.110.0430.00714.47
7.0.100.0360.01014.54
7.0.90.0410.01014.46
7.0.80.0340.01314.60
7.0.70.0410.00614.55
7.0.60.0520.01614.37
7.0.50.0550.01114.48
7.0.40.0390.00914.72
7.0.30.0420.01214.76
7.0.20.0380.01014.58
7.0.10.0440.01314.84
7.0.00.0440.01014.55

preferences:
57.19 ms | 401 KiB | 5 Q