3v4l.org

run code in 300+ PHP versions simultaneously
<?php function greatest_prime($n) { for($x1 = (int)floor(sqrt($n)); $x1 > 3; $x1--) { if($n % $x1 != 0) continue; $x2 = $n/$x1; if(is_prime($x1)) return $x1; if(is_prime($x2)) return $x2; } } function is_prime($x) { for($y = (int)floor(sqrt($x)); $y > 1; $y--) if($x % $y == 0) return false; return true; } var_dump(greatest_prime(600851475143));

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)
8.3.60.0140.01718.30
8.3.50.0060.01816.47
8.3.40.0030.02018.83
8.3.30.0030.02018.82
8.3.20.0060.00620.33
8.3.10.0000.01321.85
8.3.00.0030.01019.25
8.2.180.0100.01318.29
8.2.170.0120.01222.96
8.2.160.0130.01622.30
8.2.150.0060.00624.18
8.2.140.0000.01324.66
8.2.130.0000.01322.38
8.2.120.0000.01226.35
8.2.110.0030.01422.43
8.2.100.0060.01218.03
8.2.90.0080.00617.84
8.2.80.0030.01019.29
8.2.70.0060.01217.50
8.2.60.0030.01017.93
8.2.50.0030.01318.07
8.2.40.0000.01418.34
8.2.30.0050.00918.18
8.2.20.0080.00818.11
8.2.10.0090.00618.13
8.2.00.0070.00718.25
8.1.280.0100.01325.92
8.1.270.0030.01023.90
8.1.260.0090.00326.35
8.1.250.0030.01028.09
8.1.240.0120.00622.16
8.1.230.0070.01120.82
8.1.220.0000.01517.79
8.1.210.0030.01218.78
8.1.200.0060.01017.23
8.1.190.0040.01117.23
8.1.180.0040.01119.14
8.1.170.0000.01418.69
8.1.160.0070.00719.06
8.1.150.0030.01018.83
8.1.140.0030.01017.77
8.1.130.0000.01319.00
8.1.120.0070.00717.51
8.1.110.0070.00717.54
8.1.100.0070.00717.41
8.1.90.0000.01417.50
8.1.80.0040.01117.49
8.1.70.0000.01417.43
8.1.60.0030.01417.53
8.1.50.0000.02217.48
8.1.40.0000.01717.43
8.1.30.0070.01017.67
8.1.20.0000.01717.71
8.1.10.0000.01717.55
8.1.00.0000.01817.52
8.0.300.0070.00720.21
8.0.290.0040.01116.75
8.0.280.0000.01418.48
8.0.270.0060.00617.22
8.0.260.0000.01219.12
8.0.250.0060.00716.98
8.0.240.0060.00916.93
8.0.230.0030.01017.02
8.0.220.0030.01016.95
8.0.210.0030.01016.86
8.0.200.0030.01016.99
8.0.190.0060.01217.05
8.0.180.0060.01016.90
8.0.170.0070.01017.00
8.0.160.0040.01817.00
8.0.150.0030.01316.76
8.0.140.0000.01716.81
8.0.130.0030.01313.48
8.0.120.0070.01116.91
8.0.110.0030.01316.95
8.0.100.0040.01416.99
8.0.90.0000.01616.91
8.0.80.0100.02916.96
8.0.70.0000.01616.82
8.0.60.0030.01316.85
8.0.50.0000.01716.99
8.0.30.0060.02816.98
8.0.20.0110.03017.40
8.0.10.0030.01416.99
8.0.00.0120.02716.76
7.4.330.0000.01215.55
7.4.320.0000.01316.56
7.4.300.0040.01116.61
7.4.290.0000.01916.67
7.4.280.0070.01316.69
7.4.270.0030.01616.63
7.4.260.0040.01416.43
7.4.250.0000.01916.53
7.4.240.0040.01416.59
7.4.230.0040.01516.57
7.4.220.0030.01616.46
7.4.210.0090.02816.74
7.4.200.0000.01816.76
7.4.160.0160.03116.59
7.4.150.0070.04917.40
7.4.140.0160.04117.86
7.4.130.0130.03316.64
7.4.120.0080.03316.57
7.4.110.0100.03016.55
7.4.100.0150.03516.54
7.4.90.0180.03716.69
7.4.80.0100.04519.39
7.4.70.0100.04316.43
7.4.60.0030.04616.49
7.4.50.0120.01916.67
7.4.40.0100.02816.52
7.4.10.0070.03414.94
7.4.00.0090.02814.88
7.3.330.0000.01913.26
7.3.320.0030.01713.30
7.3.310.0070.01416.45
7.3.300.0000.02116.43
7.3.290.0060.03616.46
7.3.280.0130.02716.46
7.3.270.0060.03717.40
7.3.260.0130.03316.49
7.3.250.0140.03016.44
7.3.240.0120.03016.57
7.3.230.0100.03016.47
7.3.210.0030.04416.39
7.3.200.0120.04616.63
7.3.190.0100.03016.32
7.3.180.0060.03516.62
7.3.170.0060.03916.66
7.3.160.0000.04016.73
7.3.130.0000.04415.07
7.3.120.0110.03314.88
7.3.110.0040.03814.78
7.3.100.0060.02914.67
7.3.90.0050.03314.97
7.3.80.0020.02814.88
7.3.70.0060.02914.68
7.3.60.0050.02914.76
7.3.50.0070.02114.79
7.3.40.0040.02814.95
7.3.30.0080.01914.95
7.3.20.0020.03016.65
7.3.10.0050.02616.76
7.3.00.0030.02916.59
7.2.330.0120.04516.35
7.2.320.0060.03816.84
7.2.310.0160.04316.91
7.2.300.0130.03416.55
7.2.290.0060.03816.92
7.2.260.0070.03014.89
7.2.250.0070.03214.86
7.2.240.0080.03315.02
7.2.230.0030.03815.09
7.2.220.0060.02914.84
7.2.210.0050.02914.93
7.2.200.0030.03315.01
7.2.190.0070.02514.84
7.2.180.0080.02314.94
7.2.170.0020.02714.99
7.2.160.0030.03014.98
7.2.150.0060.03516.90
7.2.140.0090.01817.10
7.2.130.0050.03116.86
7.2.120.0030.03016.77
7.2.110.0050.03116.71
7.2.100.0060.02216.75
7.2.90.0080.02516.99
7.2.80.0030.03116.84
7.2.70.0080.02617.03
7.2.60.0010.03016.89
7.2.50.0030.03016.68
7.2.40.0000.03016.92
7.2.30.0020.02916.91
7.2.20.0050.02416.88
7.2.10.0190.04117.27
7.2.00.0230.02617.14
7.1.330.0070.05415.75
7.1.320.0070.05615.79
7.1.310.0040.05715.66
7.1.300.0070.05315.79
7.1.290.0020.05715.79
7.1.280.0050.05415.75
7.1.270.0070.05615.71
7.1.260.0070.05315.84
7.1.250.0060.05315.93
7.1.240.0030.06515.91
7.1.230.0000.05715.82
7.1.220.0070.05415.80
7.1.210.0030.05715.90
7.1.200.0050.04315.63
7.1.190.0100.05515.85
7.1.180.0030.05715.52
7.1.170.0030.05315.89
7.1.160.0030.05515.75
7.1.150.0070.05915.80
7.1.140.0030.05815.82
7.1.130.0320.04716.25
7.1.120.0320.04916.09
7.1.110.0130.05916.12
7.1.100.0360.05015.90
7.1.90.0110.05316.06
7.1.80.0170.05615.92
7.1.70.0200.04515.61
7.1.60.0230.05024.54
7.1.50.0360.06124.48
7.1.40.0310.04724.19
7.1.30.0240.04624.22
7.1.20.0190.05224.33
7.1.10.0250.04515.16
7.1.00.0170.05915.32
7.0.330.0070.05315.53
7.0.320.0030.05315.55
7.0.310.0000.05415.42
7.0.300.0000.06015.49
7.0.290.0060.05115.46
7.0.280.0030.06615.56
7.0.270.0000.06515.23
7.0.260.0030.05415.64
7.0.250.0100.05815.59
7.0.240.0070.05615.40
7.0.230.0070.05615.37
7.0.220.0030.05615.39
7.0.210.0100.04515.53
7.0.200.0070.04715.58
7.0.190.0000.05315.52
7.0.180.0000.06215.25
7.0.170.0100.04615.66
7.0.160.0030.05415.57
7.0.150.0070.05615.52
7.0.140.0030.05615.48
7.0.130.0100.05815.28
7.0.120.0100.05615.22
7.0.110.0060.05115.32
7.0.100.0000.06315.23
7.0.90.0000.05915.37
7.0.80.0100.05415.54
7.0.70.0070.07415.43
7.0.60.0070.05315.53
7.0.50.0000.05815.64
7.0.40.0030.06313.58
7.0.30.0060.05513.56
7.0.20.0070.05613.50
7.0.10.0030.05213.57
7.0.00.0070.05313.34
5.6.400.0030.11014.34
5.6.390.0030.11414.47
5.6.380.0000.11814.18
5.6.370.0130.10214.52
5.6.360.0030.11014.68
5.6.350.0000.11513.84
5.6.340.0070.10614.26
5.6.330.0030.11414.19
5.6.320.0000.11913.79
5.6.310.0000.11214.59
5.6.300.0100.10714.07
5.6.290.0100.10814.32
5.6.280.0030.12214.44
5.6.270.0100.10714.36
5.6.260.0100.10514.47
5.6.250.0070.10314.41
5.6.240.0030.10914.57
5.6.230.0070.10514.08
5.6.220.0070.12614.52
5.6.210.0000.11914.55
5.6.200.0030.10714.20
5.6.190.0000.12314.53
5.6.180.0000.11714.34
5.6.170.0030.12014.34
5.6.160.0000.11714.17
5.6.150.0000.11314.21
5.6.140.0030.11214.22
5.6.130.0030.11614.34
5.6.120.0070.11114.21
5.6.110.0070.11514.10
5.6.100.0100.12814.25
5.6.90.0060.10414.31
5.6.80.0160.12714.18
5.6.70.0000.11814.36
5.6.60.0070.11414.43
5.6.50.0030.11514.18
5.6.40.0000.11914.09
5.6.30.0070.11114.52
5.6.20.0070.11614.03
5.6.10.0070.11014.19
5.6.00.0070.10914.11

preferences:
36.51 ms | 400 KiB | 5 Q