3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "aaaaaaaaaaaaaaaababababababababa"; while(strpos($a, "aa")!==false ||strpos($a, "ba")!==false) { $a = str_replace(array("aa", "ba"), "a", $a); } echo $a;

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)
8.3.60.0100.00718.56
8.3.50.0120.00921.16
8.3.40.0120.00618.89
8.3.30.0110.00718.92
8.3.20.0040.00420.14
8.3.10.0080.00023.61
8.3.00.0040.00419.25
8.2.180.0070.00718.42
8.2.170.0150.00622.96
8.2.160.0000.01520.39
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00422.03
8.2.110.0060.00322.11
8.2.100.0060.00617.75
8.2.90.0060.00319.13
8.2.80.0040.00417.97
8.2.70.0030.00517.61
8.2.60.0000.00818.03
8.2.50.0000.00818.07
8.2.40.0060.00317.91
8.2.30.0070.00017.97
8.2.20.0020.00517.55
8.2.10.0030.00518.02
8.2.00.0050.00217.64
8.1.280.0070.00725.92
8.1.270.0000.00821.83
8.1.260.0050.00326.35
8.1.250.0070.00028.09
8.1.240.0040.00424.00
8.1.230.0080.00319.14
8.1.220.0040.00417.74
8.1.210.0000.00918.77
8.1.200.0090.00017.10
8.1.190.0040.00417.23
8.1.180.0000.00718.10
8.1.170.0060.00320.28
8.1.160.0070.00022.02
8.1.150.0000.00818.94
8.1.140.0040.00417.39
8.1.130.0000.00817.78
8.1.120.0070.00017.43
8.1.110.0040.00417.43
8.1.100.0040.00417.38
8.1.90.0000.00817.38
8.1.80.0050.00317.34
8.1.70.0000.00717.28
8.1.60.0030.00517.56
8.1.50.0030.00517.40
8.1.40.0040.00417.52
8.1.30.0030.00617.67
8.1.20.0060.00317.65
8.1.10.0040.00417.50
8.1.00.0000.00917.41
8.0.300.0030.00318.77
8.0.290.0070.00016.63
8.0.280.0030.00318.36
8.0.270.0030.00317.31
8.0.260.0000.00617.17
8.0.250.0050.00216.98
8.0.240.0080.00016.91
8.0.230.0000.00716.90
8.0.220.0030.00316.91
8.0.210.0040.00416.77
8.0.200.0030.00316.97
8.0.190.0070.00016.96
8.0.180.0000.00716.97
8.0.170.0040.00416.83
8.0.160.0000.00716.85
8.0.150.0050.00216.75
8.0.140.0000.00716.82
8.0.130.0030.00313.35
8.0.120.0000.00816.91
8.0.110.0040.00416.88
8.0.100.0070.00016.90
8.0.90.0000.00816.86
8.0.80.0120.00916.89
8.0.70.0040.00416.71
8.0.60.0000.00716.79
8.0.50.0080.00016.88
8.0.30.0140.00916.89
8.0.20.0090.01317.40
8.0.10.0040.00416.88
8.0.00.0130.00716.81
7.4.330.0000.00515.02
7.4.320.0030.00316.42
7.4.300.0000.00616.55
7.4.290.0030.00716.42
7.4.280.0060.00316.54
7.4.270.0040.00416.47
7.4.260.0030.00316.41
7.4.250.0030.00316.36
7.4.240.0040.00316.56
7.4.230.0000.00716.53
7.4.220.0070.01116.64
7.4.210.0120.00316.63
7.4.200.0000.00716.63
7.4.160.0130.00316.44
7.4.150.0100.00717.40
7.4.140.0060.01417.86
7.4.130.0090.01016.48
7.4.120.0090.00716.45
7.4.110.0100.00716.53
7.4.100.0090.00916.52
7.4.90.0130.01016.66
7.4.80.0140.00719.39
7.4.70.0120.00416.55
7.4.60.0110.00616.54
7.4.50.0000.00816.20
7.4.40.0060.00916.53
7.4.30.0090.01216.52
7.4.10.0090.00714.93
7.4.00.0070.00914.95
7.3.330.0000.00513.00
7.3.320.0050.00013.15
7.3.310.0070.00016.36
7.3.300.0070.00016.24
7.3.290.0060.01116.26
7.3.280.0090.00816.24
7.3.270.0120.00617.40
7.3.260.0100.01016.40
7.3.250.0120.00516.54
7.3.240.0110.01416.24
7.3.230.0090.00816.39
7.3.210.0040.01216.27
7.3.200.0170.00019.39
7.3.190.0070.01016.27
7.3.180.0090.00616.47
7.3.170.0100.00716.47
7.3.160.0060.00916.47
7.3.130.0090.01114.82
7.3.120.0100.00614.83
7.3.110.0050.01314.76
7.3.100.0080.00614.79
7.3.90.0080.00814.79
7.3.80.0070.00814.92
7.3.70.0090.00214.79
7.3.60.0020.01114.82
7.3.50.0090.00814.86
7.3.40.0070.00414.55
7.3.30.0020.01114.69
7.3.20.0010.01116.62
7.3.10.0090.00416.56
7.3.00.0080.00616.64
7.2.330.0040.01216.51
7.2.320.0150.00716.44
7.2.310.0120.00916.51
7.2.300.0040.01216.50
7.2.290.0100.00716.34
7.2.260.0050.01114.97
7.2.250.0100.00814.81
7.2.240.0060.00814.88
7.2.230.0060.01115.00
7.2.220.0060.01115.06
7.2.210.0020.00914.99
7.2.200.0060.00914.98
7.2.190.0090.00614.98
7.2.180.0040.01115.03
7.2.170.0020.00915.01
7.2.160.0040.01015.04
7.2.150.0080.00716.88
7.2.140.0040.01016.88
7.2.130.0070.00816.77
7.2.120.0090.00716.81
7.2.110.0090.00716.74
7.2.100.0070.00916.68
7.2.90.0100.00717.00
7.2.80.0060.01216.91
7.2.70.0070.00916.88
7.2.60.0080.00816.86
7.2.50.0030.01216.76
7.2.40.0070.00716.93
7.2.30.0070.00816.80
7.2.20.0040.01316.81
7.2.10.0060.01016.64
7.2.00.0050.00917.20
7.1.330.0070.00515.88
7.1.320.0040.01015.81
7.1.310.0050.00815.64
7.1.300.0090.00715.90
7.1.290.0030.01115.67
7.1.280.0070.00715.79
7.1.270.0060.00615.74
7.1.260.0050.00715.60
7.1.250.0070.00715.74
7.1.240.0040.01115.65
7.1.230.0100.00615.77
7.1.220.0090.00515.63
7.1.210.0110.00815.81
7.1.200.0090.00615.78
7.1.190.0080.00715.55
7.1.180.0070.00515.60
7.1.170.0080.01015.79
7.1.160.0100.00415.78
7.1.150.0110.00315.63
7.1.140.0060.01015.72
7.1.130.0060.00615.59
7.1.120.0090.00515.75
7.1.110.0080.00915.62
7.1.100.0060.00616.28
7.1.90.0060.00815.80
7.1.80.0080.00715.55
7.1.70.0050.00816.05
7.1.60.0040.00916.62
7.1.50.0080.01220.52
7.1.40.0090.00615.85
7.1.30.0100.00615.64
7.1.20.0070.00615.62
7.1.10.0050.00915.50
7.1.00.0070.02717.36
7.0.330.0070.01015.47
7.0.320.0090.00315.06
7.0.310.0110.00615.26
7.0.300.0060.01015.25
7.0.290.0060.00915.22
7.0.280.0100.00515.46
7.0.270.0060.00915.26
7.0.260.0060.00815.44
7.0.250.0110.00515.31
7.0.240.0080.00615.49
7.0.230.0060.00915.28
7.0.220.0040.00915.24
7.0.210.0090.00515.38
7.0.200.0030.00715.72
7.0.190.0100.00315.15
7.0.180.0100.00615.13
7.0.170.0120.00515.25
7.0.160.0100.00615.30
7.0.150.0040.01015.16
7.0.140.0050.02417.06
7.0.130.0060.01015.34
7.0.120.0080.00515.33
7.0.110.0070.00515.47
7.0.100.0080.00615.24
7.0.90.0060.00815.24
7.0.80.0090.00615.24
7.0.70.0080.00515.35
7.0.60.0100.02316.49
7.0.50.0050.01616.08
7.0.40.0060.02715.10
7.0.30.0200.02115.02
7.0.20.0150.02515.09
7.0.10.0090.02415.04
7.0.00.0070.01414.98
5.6.400.0030.01114.18
5.6.390.0060.00914.45
5.6.380.0050.01114.29
5.6.370.0060.00614.40
5.6.360.0040.00714.17
5.6.350.0080.00714.11
5.6.340.0030.01014.16
5.6.330.0060.00613.99
5.6.320.0060.00714.20
5.6.310.0070.00514.21
5.6.300.0090.00514.42
5.6.290.0070.00714.30
5.6.280.0060.02416.07
5.6.270.0030.01014.22
5.6.260.0060.00514.17
5.6.250.0060.01014.33
5.6.240.0040.01014.39
5.6.230.0060.00914.22
5.6.220.0070.00514.20
5.6.210.0080.02415.85
5.6.200.0040.01715.16
5.6.190.0050.01715.84
5.6.180.0070.02015.88
5.6.170.0090.02115.69
5.6.160.0050.02615.82
5.6.150.0060.01415.21
5.6.140.0080.02115.23
5.6.130.0030.02915.08
5.6.120.0060.02615.85
5.6.110.0100.02115.78
5.6.100.0060.02015.96
5.6.90.0040.02716.00
5.6.80.0090.01715.70
5.6.70.1180.01615.68
5.6.60.0030.01014.18
5.6.50.0050.00914.25
5.6.40.0070.00814.31
5.6.30.0040.00914.29
5.6.20.0050.00714.09
5.6.10.0040.00714.12
5.6.00.0050.00614.12
5.5.380.0060.00813.25
5.5.370.0050.00713.24
5.5.360.0050.00713.12
5.5.350.0110.02014.89
5.5.340.0050.01814.36
5.5.330.0040.01415.00
5.5.320.0110.01515.05
5.5.310.0060.02114.94
5.5.300.0060.02514.47
5.5.290.0050.02614.33
5.5.280.0050.02715.10
5.5.270.0050.02415.05
5.5.260.0050.02315.21
5.5.250.0040.02815.10
5.5.240.1020.01614.88
5.5.230.0040.00913.13
5.5.220.0080.00313.10
5.5.210.0090.00413.11
5.5.200.0070.00613.11
5.5.190.0070.00413.19
5.5.180.0030.00913.15
5.5.170.0040.00613.25
5.5.160.0040.00713.11
5.5.150.0070.00613.31
5.5.140.0060.00413.15
5.5.130.0020.00813.25
5.5.120.0040.00813.13
5.5.110.0060.00613.17
5.5.100.0060.00713.14
5.5.90.0040.01013.20
5.5.80.0040.00613.03
5.5.70.0040.00913.13
5.5.60.0060.00613.12
5.5.50.0030.00813.23
5.5.40.0030.00913.14
5.5.30.0050.00613.21
5.5.20.0070.00613.15
5.5.10.0020.00912.96
5.5.00.0080.00413.25
5.4.450.0270.01713.87
5.4.440.0290.01713.75
5.4.430.0070.01913.84
5.4.420.0190.01813.87
5.4.410.0270.01513.75
5.4.400.0250.01413.74
5.4.390.0270.01313.75
5.4.380.0200.01813.70
5.4.370.0250.02013.70
5.4.360.0250.01813.76
5.4.350.0170.01813.77
5.4.340.0030.01511.96
5.4.330.0040.00511.96
5.4.320.0040.01512.08
5.4.310.0050.01312.08
5.4.300.0050.01312.08
5.4.290.0060.01412.08
5.4.280.0060.01512.05
5.4.270.0040.01612.05
5.4.260.0030.01812.05
5.4.250.0060.01212.05
5.4.240.0070.01112.05
5.4.230.0030.01712.05
5.4.220.0040.01412.05
5.4.210.0020.01412.05
5.4.200.0020.01712.05
5.4.190.0040.01112.05
5.4.180.0020.01412.05
5.4.170.0040.01412.05
5.4.160.0050.01312.05
5.4.150.0050.01212.05
5.4.140.0050.01311.97
5.4.130.0070.01011.97
5.4.120.0040.01311.96
5.4.110.0020.01411.96
5.4.100.0060.01211.96
5.4.90.0050.01411.96
5.4.80.0060.01511.96
5.4.70.0060.01211.96
5.4.60.0040.01211.96
5.4.50.0020.01711.96
5.4.40.0020.01511.96
5.4.30.0060.01211.95
5.4.20.0050.01311.95
5.4.10.0030.01411.96
5.4.00.0050.01411.83
5.3.290.0080.02211.99
5.3.280.0040.02511.94
5.3.270.0080.02111.95
5.3.260.0040.02311.95
5.3.250.0030.02511.95
5.3.240.0050.02511.95
5.3.230.0020.02411.94
5.3.220.0030.02611.93
5.3.210.0060.02411.93
5.3.200.0040.02111.93
5.3.190.0080.02111.93
5.3.180.0050.02111.93
5.3.170.0040.02311.92
5.3.160.0050.02111.92
5.3.150.0040.02011.92
5.3.140.0040.02111.92
5.3.130.0040.02111.92
5.3.120.0040.02211.92
5.3.110.0050.02311.92
5.3.100.0040.02111.65
5.3.90.0070.02011.63
5.3.80.0050.01911.63
5.3.70.0070.02311.63
5.3.60.0070.01911.62
5.3.50.0030.02311.59
5.3.40.0030.02311.59
5.3.30.0020.02411.56
5.3.20.0040.02011.45
5.3.10.0040.02211.43
5.3.00.0050.01911.43
5.2.170.0060.01610.18
5.2.160.0040.01710.18
5.2.150.0050.01610.18
5.2.140.0040.01810.17
5.2.130.0040.01710.15
5.2.120.0050.01710.15
5.2.110.0040.01710.16
5.2.100.0020.01910.16
5.2.90.0030.01810.16
5.2.80.0040.01910.16
5.2.70.0020.02110.16
5.2.60.0030.01910.13
5.2.50.0040.01910.12
5.2.40.0050.01610.11
5.2.30.0040.01810.09
5.2.20.0040.02010.09
5.2.10.0050.01510.05
5.2.00.0040.0179.98
5.1.60.0040.0169.62
5.1.50.0030.0159.62
5.1.40.0010.0179.61
5.1.30.0020.0169.79
5.1.20.0040.0159.79
5.1.10.0020.0169.66
5.1.00.0030.0169.66
5.0.50.0050.0098.90
5.0.40.0040.0118.83
5.0.30.0040.0178.73
5.0.20.0030.0138.72
5.0.10.0030.0128.71
5.0.00.0020.0188.70
4.4.90.0030.0087.98
4.4.80.0010.0107.96
4.4.70.0010.0107.96
4.4.60.0050.0097.96
4.4.50.0010.0137.97
4.4.40.0010.0167.94
4.4.30.0010.0127.96
4.4.20.0020.0128.01
4.4.10.0010.0148.01
4.4.00.0020.0157.96
4.3.110.0020.0097.92
4.3.100.0040.0077.92
4.3.90.0020.0097.90
4.3.80.0010.0167.88
4.3.70.0030.0087.90
4.3.60.0040.0107.90
4.3.50.0030.0127.90
4.3.40.0030.0157.85
4.3.30.0030.0117.23
4.3.20.0030.0097.22
4.3.10.0040.0127.20
4.3.00.0070.0109.03

preferences:
43.66 ms | 401 KiB | 5 Q