3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'hello, [how]foo[how]bar. please don\'t remove [are] you?'; echo preg_replace('~\[.*?\]~', '', $a); echo PHP_EOL . "there should be no space between foo and bar :)";

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)
8.3.60.0140.00718.39
8.3.50.0120.00716.48
8.3.40.0080.00818.79
8.3.30.0140.00418.85
8.3.20.0060.00318.94
8.3.10.0050.00320.65
8.3.00.0080.00017.75
8.2.180.0110.00716.75
8.2.170.0070.00722.96
8.2.160.0070.00722.21
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0040.00419.83
8.2.110.0060.00320.58
8.2.100.0060.00618.04
8.2.90.0040.00418.28
8.2.80.0070.00018.03
8.2.70.0030.00517.75
8.2.60.0050.00318.04
8.2.50.0040.00418.07
8.2.40.0080.00018.16
8.2.30.0040.00418.05
8.2.20.0040.00417.81
8.2.10.0070.00017.71
8.2.00.0070.00017.83
8.1.280.0070.00725.92
8.1.270.0070.01123.99
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0050.00522.14
8.1.230.0080.00322.70
8.1.220.0000.00817.74
8.1.210.0000.00818.89
8.1.200.0030.00617.35
8.1.190.0070.00017.41
8.1.180.0080.00018.10
8.1.170.0040.00418.76
8.1.160.0000.00718.72
8.1.150.0070.00018.63
8.1.140.0040.00417.48
8.1.130.0030.00317.85
8.1.120.0050.00317.42
8.1.110.0000.00717.57
8.1.100.0070.00017.43
8.1.90.0030.00517.54
8.1.80.0030.00317.47
8.1.70.0000.00717.52
8.1.60.0050.00517.55
8.1.50.0040.00417.44
8.1.40.0050.00317.61
8.1.30.0000.00717.57
8.1.20.0040.00417.80
8.1.10.0070.00017.69
8.1.00.0070.00017.55
8.0.300.0040.00420.06
8.0.290.0000.00716.88
8.0.280.0040.00218.46
8.0.270.0000.00817.33
8.0.260.0060.00017.01
8.0.250.0030.00317.06
8.0.240.0040.00417.09
8.0.230.0030.00317.06
8.0.220.0000.00716.91
8.0.210.0000.00717.01
8.0.200.0000.00717.01
8.0.190.0030.00316.93
8.0.180.0050.00216.91
8.0.170.0030.00716.91
8.0.160.0070.00016.94
8.0.150.0000.00716.96
8.0.140.0000.01116.94
8.0.130.0030.00313.38
8.0.120.0000.00816.82
8.0.110.0000.00816.83
8.0.100.0040.00416.84
8.0.90.0040.00417.00
8.0.80.0040.01116.91
8.0.70.0020.00516.80
8.0.60.0050.00316.99
8.0.50.0050.00317.07
8.0.30.0120.01117.12
8.0.20.0070.01217.15
8.0.10.0020.00517.09
8.0.00.0090.00916.79
7.4.330.0000.00514.90
7.4.320.0060.00016.64
7.4.300.0000.00616.69
7.4.290.0000.00716.71
7.4.280.0040.00516.55
7.4.270.0070.00016.75
7.4.260.0030.00313.42
7.4.250.0050.00316.75
7.4.240.0000.00716.65
7.4.230.0070.00016.55
7.4.220.0100.00716.55
7.4.210.0080.00816.75
7.4.200.0070.00016.54
7.4.190.0000.00816.80
7.4.160.0130.00316.50
7.4.150.0110.00617.07
7.4.140.0150.00317.28
7.4.130.0070.01116.62
7.4.120.0070.01116.69
7.4.110.0170.00016.87
7.4.100.0140.01016.60
7.4.90.0100.00716.52
7.4.80.0070.01118.80
7.4.70.0030.01616.63
7.4.60.0080.00816.70
7.4.50.0000.00816.64
7.4.40.0080.00822.27
7.4.30.0100.00716.67
7.4.10.0090.00914.93
7.4.00.0050.01015.20
7.3.330.0030.00313.14
7.3.320.0020.00213.05
7.3.310.0070.00016.34
7.3.300.0000.00616.13
7.3.290.0030.01016.25
7.3.280.0070.01016.28
7.3.270.0140.00317.07
7.3.260.0140.00818.24
7.3.250.0130.00816.49
7.3.240.0050.01116.45
7.3.230.0070.01016.56
7.3.210.0130.00316.39
7.3.200.0040.01219.39
7.3.190.0140.00816.53
7.3.180.0080.00816.32
7.3.170.0110.00616.75
7.3.160.0100.00716.65
7.3.130.0070.01014.73
7.3.120.0060.01115.15
7.3.110.0090.00914.79
7.3.100.0070.01414.82
7.3.90.0130.00715.06
7.3.80.0090.00614.86
7.3.70.0070.00714.63
7.3.60.0030.00614.63
7.3.50.0000.00914.99
7.3.40.0080.00314.49
7.3.30.0030.01015.05
7.3.20.0040.01116.58
7.3.10.0080.00716.70
7.3.00.0080.00516.70
7.2.330.0090.00916.68
7.2.320.0140.00416.60
7.2.310.0090.01516.61
7.2.300.0100.00716.72
7.2.290.0180.00616.56
7.2.260.0070.01115.31
7.2.250.0080.00915.10
7.2.240.0000.01314.72
7.2.230.0070.01014.96
7.2.220.0060.01515.10
7.2.210.0000.01214.86
7.2.200.0070.00715.26
7.2.190.0090.00615.08
7.2.180.0060.00615.24
7.2.170.0060.00914.82
7.2.160.0040.00714.99
7.2.150.0030.01416.71
7.2.140.0070.01116.81
7.2.130.0010.01216.91
7.2.120.0080.00717.04
7.2.110.0020.01416.95
7.2.100.0090.00617.02
7.2.90.0100.00517.09
7.2.80.0080.00717.08
7.2.70.0050.00716.65
7.2.60.0020.01016.91
7.2.50.0080.00716.99
7.2.40.0100.01216.80
7.2.30.0110.00817.02
7.2.20.0150.00417.05
7.2.10.0110.00616.92
7.2.00.0130.00317.02
7.1.330.0060.00615.57
7.1.320.0100.01016.00
7.1.310.0040.01116.00
7.1.300.0090.00616.04
7.1.290.0030.00915.52
7.1.280.0040.01115.62
7.1.270.0070.00715.88
7.1.260.0060.00616.02
7.1.250.0050.00715.96
7.1.240.0050.00915.79
7.1.230.0060.00615.71
7.1.220.0050.00815.92
7.1.210.0020.01015.83
7.1.200.0050.00715.84
7.1.190.0030.00815.71
7.1.180.0050.00915.87
7.1.170.0020.00916.01
7.1.160.0060.01015.65
7.1.150.0020.01115.97
7.1.140.0080.01115.92
7.1.130.0090.00716.03
7.1.120.0100.00315.78
7.1.110.0050.00815.95
7.1.100.0070.00515.73
7.1.90.0040.01215.89
7.1.80.0080.00515.91
7.1.70.0070.00716.36
7.1.60.0070.01417.02
7.1.50.0040.01016.30
7.1.40.0050.00815.85
7.1.30.0020.01115.73
7.1.20.0140.00215.88
7.1.10.0050.00815.79
7.1.00.0070.03118.11
7.0.330.0090.00615.50
7.0.320.0060.00915.17
7.0.310.0050.00715.38
7.0.300.0070.00315.35
7.0.290.0040.01115.43
7.0.280.0080.00615.43
7.0.270.0050.01215.40
7.0.260.0060.00615.43
7.0.250.0050.00515.43
7.0.240.0040.01215.57
7.0.230.0030.00815.45
7.0.220.0050.00915.40
7.0.210.0120.00515.47
7.0.200.0060.00615.93
7.0.190.0030.01015.38
7.0.180.0040.00815.39
7.0.170.0020.01215.54
7.0.160.0080.00815.48
7.0.150.0080.00915.49
7.0.140.0070.02717.58
7.0.130.0100.00715.35
7.0.120.0060.00715.56
7.0.110.0060.01015.49
7.0.100.0040.01215.54
7.0.90.0100.00515.45
7.0.80.0050.01015.47
7.0.70.0090.00715.54
7.0.60.0080.03116.89
7.0.50.0070.03216.37
7.0.40.0030.03315.05
7.0.30.0060.03014.92
7.0.20.0050.03214.85
7.0.10.0040.03115.04
7.0.00.0090.02815.03
5.6.400.0000.01014.61
5.6.390.0030.01314.27
5.6.380.0030.01114.24
5.6.370.0040.00914.26
5.6.360.0050.01114.09
5.6.350.0080.00714.23
5.6.340.0090.00914.28
5.6.330.0090.00514.43
5.6.320.0060.01014.30
5.6.310.0040.01314.18
5.6.300.0070.00514.28
5.6.290.0070.01014.32
5.6.280.0050.02916.52
5.6.270.0090.00314.29
5.6.260.0060.00514.29
5.6.250.0060.00814.25
5.6.240.0040.00914.19
5.6.230.0050.01114.10
5.6.220.0080.00614.25
5.6.210.0100.02916.43
5.6.200.0080.02915.63
5.6.190.0080.02315.53
5.6.180.0080.02215.49
5.6.170.0020.03615.56
5.6.160.0050.02615.40
5.6.150.0070.02215.50
5.6.140.0080.02815.53
5.6.130.0070.03015.55
5.6.120.0070.03015.51
5.6.110.0060.02515.44
5.6.100.0080.03215.56
5.6.90.0080.03215.57
5.6.80.0050.02015.23
5.6.70.0080.02415.28
5.6.60.0070.03215.33
5.6.50.0060.03315.43
5.6.40.0070.03015.40
5.6.30.0090.03115.34
5.6.20.0030.03415.36
5.6.10.0060.02115.25
5.6.00.0050.02715.14
5.5.380.0080.00312.53
5.5.370.0020.01112.61
5.5.360.0050.01012.62
5.5.350.0080.01915.11
5.5.340.0040.03114.39
5.5.330.0020.02214.39
5.5.320.0080.01814.36
5.5.310.0110.02114.31
5.5.300.0060.03314.45
5.5.290.0040.03014.48
5.5.280.0060.03014.40
5.5.270.0100.03014.31
5.5.260.0060.02914.56
5.5.250.0130.01314.19
5.5.240.0070.02714.12
5.5.230.0090.01614.11
5.5.220.0070.02814.06
5.5.210.0120.01914.08
5.5.200.0060.02014.08
5.5.190.0030.02314.04
5.5.180.0090.02014.14
5.5.170.0060.00912.47
5.5.160.0020.02414.03
5.5.150.0040.03014.02
5.5.140.0030.02114.23
5.5.130.0050.02114.03
5.5.120.0120.02514.13
5.5.110.0060.01714.29
5.5.100.0080.02314.00
5.5.90.0070.01914.06
5.5.80.0080.01614.08
5.5.70.0040.01614.11
5.5.60.0070.01714.09
5.5.50.0050.01814.13
5.5.40.0030.01714.13
5.5.30.0070.01614.19
5.5.20.0060.02214.17
5.5.10.0070.01614.13
5.5.00.0020.02114.02
5.4.450.0040.03213.92
5.4.440.0060.02613.86
5.4.430.0070.02613.76
5.4.420.0060.01913.81
5.4.410.0090.02713.82
5.4.400.0070.02913.74
5.4.390.0040.02513.71
5.4.380.0030.03213.75
5.4.370.0030.02513.62
5.4.360.0060.02313.63
5.4.350.0050.02213.77
5.4.340.0080.02813.70
5.4.330.0090.00311.02
5.4.320.0060.01613.74
5.4.310.0010.02013.62
5.4.300.0030.02413.56
5.4.290.0060.02813.65
5.4.280.0070.02413.72
5.4.270.0080.02713.66
5.4.260.0120.02213.56
5.4.250.0090.01613.60
5.4.240.0030.01813.64
5.4.230.0070.01413.71
5.4.220.0090.01513.67
5.4.210.0050.01413.63
5.4.200.0060.01713.61
5.4.190.0050.01713.65
5.4.180.0060.01513.70
5.4.170.0040.01913.73
5.4.160.0060.02513.62
5.4.150.0060.01513.69
5.4.140.0070.01312.69
5.4.130.0030.01712.79
5.4.120.0090.01012.71
5.4.110.0040.01512.73
5.4.100.0100.01312.68
5.4.90.0050.01412.89
5.4.80.0050.01512.78
5.4.70.0030.01812.75
5.4.60.0050.01712.78
5.4.50.0040.01612.77
5.4.40.0060.01512.75
5.4.30.0040.01512.81
5.4.20.0060.01812.84
5.4.10.0050.01712.77
5.4.00.0030.01612.50
5.3.290.0050.01512.04
5.3.280.0010.01811.99
5.3.270.0080.01811.98
5.3.260.0050.01712.00
5.3.250.0060.01612.11
5.3.240.0050.01511.96
5.3.230.0080.01312.07
5.3.220.0040.01511.97
5.3.210.0040.01711.88
5.3.200.0060.01411.94
5.3.190.0050.01611.92
5.3.180.0010.01911.98
5.3.170.0060.01711.91
5.3.160.0000.01912.02
5.3.150.0050.01412.06
5.3.140.0030.02011.98
5.3.130.0080.01312.04
5.3.120.0110.01311.96
5.3.110.0050.01611.99
5.3.100.0050.01711.83
5.3.90.0050.01411.88
5.3.80.0050.01511.78
5.3.70.0080.01211.81
5.3.60.0070.01211.74
5.3.50.0030.01711.70
5.3.40.0050.01411.76
5.3.30.0050.01711.72
5.3.20.0080.01811.71
5.3.10.0020.01711.65
5.3.00.0040.02011.58
5.2.170.0070.01610.18
5.2.160.0060.01210.30
5.2.150.0020.02110.09
5.2.140.0030.01610.29
5.2.130.0030.02010.19
5.2.120.0050.01810.27
5.2.110.0020.02010.16
5.2.100.0050.01710.27
5.2.90.0030.01810.20
5.2.80.0050.02110.20
5.2.70.0000.01910.16
5.2.60.0000.02810.07
5.2.50.0050.02210.09
5.2.40.0030.01810.09
5.2.30.0020.02310.15
5.2.20.0050.0279.94
5.2.10.0070.0229.96
5.2.00.0090.0129.97
5.1.60.0000.0309.10
5.1.50.0030.0289.19
5.1.40.0020.0339.23
5.1.30.0060.0269.37
5.1.20.0020.0209.51
5.1.10.0050.0239.32
5.1.00.0020.0209.22
5.0.50.0030.0138.58
5.0.40.0000.0168.58
5.0.30.0020.0238.58
5.0.20.0030.0258.58
5.0.10.0050.0208.58
5.0.00.0000.0388.58
4.4.90.0030.0108.58
4.4.80.0020.0178.58
4.4.70.0020.0158.58
4.4.60.0020.0168.58
4.4.50.0020.0188.58
4.4.40.0030.0238.58
4.4.30.0030.0168.58
4.4.20.0030.0108.58
4.4.10.0050.0138.58
4.4.00.0000.0278.58
4.3.110.0030.0188.58
4.3.100.0030.0148.58
4.3.90.0020.0238.58
4.3.80.0000.0198.58
4.3.70.0000.0148.58
4.3.60.0030.0088.58
4.3.50.0020.0178.58
4.3.40.0000.0228.58
4.3.30.0020.0108.58
4.3.20.0020.0178.58
4.3.10.0040.0178.58
4.3.00.0030.0188.58

preferences:
47.14 ms | 401 KiB | 5 Q