3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr_count("Hello ?world. The worl?d is nice","?");

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)
8.3.60.0070.01118.42
8.3.50.0070.00716.23
8.3.40.0110.00418.84
8.3.30.0110.00418.86
8.3.20.0050.00320.20
8.3.10.0080.00023.48
8.3.00.0040.00419.55
8.2.180.0090.00916.32
8.2.170.0180.00022.96
8.2.160.0060.00918.85
8.2.150.0110.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00419.35
8.2.120.0070.00026.35
8.2.110.0050.00520.38
8.2.100.0110.00017.66
8.2.90.0050.00318.98
8.2.80.0080.00017.97
8.2.70.0060.00317.63
8.2.60.0000.00818.04
8.2.50.0080.00018.10
8.2.40.0050.00220.44
8.2.30.0040.00419.18
8.2.20.0000.00717.98
8.2.10.0040.00417.86
8.2.00.0070.00017.87
8.1.280.0120.00625.92
8.1.270.0040.00422.11
8.1.260.0060.00326.35
8.1.250.0040.00428.09
8.1.240.0090.00020.84
8.1.230.0090.00319.15
8.1.220.0060.00317.74
8.1.210.0040.00418.77
8.1.200.0030.00617.11
8.1.190.0040.00417.00
8.1.180.0040.00418.10
8.1.170.0040.00418.54
8.1.160.0040.00418.93
8.1.150.0000.00720.50
8.1.140.0000.01019.48
8.1.130.0030.00318.66
8.1.120.0040.00417.35
8.1.110.0000.00717.16
8.1.100.0050.00217.25
8.1.90.0040.00417.20
8.1.80.0030.00317.25
8.1.70.0000.00717.27
8.1.60.0040.00417.45
8.1.50.0000.00817.22
8.1.40.0030.00517.36
8.1.30.0000.00717.49
8.1.20.0040.00417.47
8.1.10.0000.00817.47
8.1.00.0000.00717.43
8.0.300.0030.00518.77
8.0.290.0070.00016.63
8.0.280.0040.00418.29
8.0.270.0030.00317.18
8.0.260.0040.00416.73
8.0.250.0030.00316.89
8.0.240.0000.00716.84
8.0.230.0070.00016.70
8.0.220.0000.00716.63
8.0.210.0040.00416.75
8.0.200.0000.00716.80
8.0.190.0000.00816.82
8.0.180.0040.00416.77
8.0.170.0070.00016.75
8.0.160.0000.00716.73
8.0.150.0040.00416.72
8.0.140.0030.00316.59
8.0.130.0050.00013.14
8.0.120.0080.00016.78
8.0.110.0040.00416.64
8.0.100.0040.00416.68
8.0.90.0050.00216.63
8.0.80.0060.01016.75
8.0.70.0050.00316.74
8.0.60.0040.00416.69
8.0.50.0040.00416.70
8.0.30.0100.00816.94
8.0.20.0110.00717.40
8.0.10.0000.00716.84
8.0.00.0110.00616.45
7.4.330.0000.00515.55
7.4.320.0000.00616.41
7.4.300.0000.00716.45
7.4.290.0030.00516.30
7.4.280.0000.00716.30
7.4.270.0030.00316.34
7.4.260.0030.00316.32
7.4.250.0030.00516.35
7.4.240.0050.00316.31
7.4.230.0000.00816.49
7.4.220.0130.01016.43
7.4.210.0090.00616.39
7.4.200.0070.00016.49
7.4.160.0110.00516.36
7.4.150.0130.01017.40
7.4.140.0070.01017.86
7.4.130.0060.01316.55
7.4.120.0110.00816.40
7.4.110.0050.01116.08
7.4.100.0080.01316.32
7.4.90.0110.00616.49
7.4.80.0060.01219.39
7.4.70.0030.01316.62
7.4.60.0030.01316.34
7.4.50.0070.00716.17
7.4.40.0070.01016.45
7.4.30.0090.00616.36
7.4.00.0060.00614.95
7.3.330.0000.00512.86
7.3.320.0020.00212.87
7.3.310.0030.00315.96
7.3.300.0000.00616.16
7.3.290.0060.00916.16
7.3.280.0070.01016.13
7.3.270.0100.00717.40
7.3.260.0120.00516.15
7.3.250.0090.01016.35
7.3.240.0070.00916.16
7.3.230.0090.00916.43
7.3.210.0100.00616.38
7.3.200.0130.00316.40
7.3.190.0060.01016.39
7.3.180.0050.01116.20
7.3.170.0030.01216.39
7.3.160.0060.00916.25
7.3.00.0060.00616.32
7.2.330.0130.00916.36
7.2.320.0070.01516.60
7.2.310.0060.00916.72
7.2.300.0100.00916.54
7.2.290.0090.00616.38
7.2.130.0000.01116.62
7.2.120.0030.00816.50
7.2.110.0030.00516.68
7.2.100.0040.01116.35
7.2.90.0060.00616.40
7.2.80.0040.01216.66
7.2.70.0090.00616.85
7.2.60.0430.01015.62
7.2.50.0030.00916.58
7.2.40.0060.00616.46
7.2.30.0000.01616.60
7.2.20.0070.00716.75
7.2.10.0090.00616.78
7.2.00.0050.00918.01
7.1.250.0110.00015.54
7.1.240.0030.00715.17
7.1.230.0030.00915.37
7.1.220.0070.00315.18
7.1.210.0120.00015.56
7.1.200.0030.01015.45
7.1.190.0090.00315.55
7.1.180.0080.00415.40
7.1.170.0030.00915.37
7.1.160.0030.00615.73
7.1.150.0040.00815.61
7.1.140.0030.00515.34
7.1.130.0000.01315.34
7.1.120.0030.01015.59
7.1.110.0030.00915.61
7.1.100.0000.01317.04
7.1.90.0080.00515.59
7.1.80.0090.00315.48
7.1.70.0120.00815.41
7.1.60.0260.00724.37
7.1.50.0230.01124.30
7.1.40.0200.00924.09
7.1.30.0220.01124.11
7.1.20.0920.00823.98
7.1.10.0110.01115.09
7.1.00.0140.01115.06
7.0.330.0030.01015.03
7.0.320.0030.00915.09
7.0.310.0100.00314.93
7.0.300.0000.01415.33
7.0.290.0070.00715.30
7.0.280.0100.00315.24
7.0.270.0080.00015.14
7.0.260.0060.00315.26
7.0.250.0070.00315.09
7.0.240.0060.00615.37
7.0.230.0100.00315.46
7.0.220.0100.00315.18
7.0.210.0040.01115.06
7.0.200.0110.00914.91
7.0.190.0110.01115.01
7.0.180.0110.00914.81
7.0.170.0280.01014.68
7.0.160.0180.00714.79
7.0.150.0120.01414.87
7.0.140.0130.00814.63
7.0.130.0140.00915.00
7.0.120.0130.01214.91
7.0.110.0200.00714.78
7.0.100.0160.01214.78
7.0.90.0150.00814.89
7.0.80.0150.00914.83
7.0.70.0120.01114.85
7.0.60.0100.01514.49
7.0.50.0140.00914.88
7.0.40.0130.00814.03
7.0.30.0120.01014.04
7.0.20.0120.01013.74
7.0.10.0180.00713.77
7.0.00.0090.01313.76
5.6.380.0000.01114.15

preferences:
44.42 ms | 401 KiB | 5 Q