3v4l.org

run code in 300+ PHP versions simultaneously
<?php function ob_callback($str) { return "Modified: " . $str; } ob_start('ob_callback', 2); echo "Hello world";

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)
8.3.40.0100.01018.81
8.3.30.0070.00718.88
8.3.20.0040.00420.33
8.3.10.0070.00021.95
8.3.00.0000.00722.43
8.2.170.0090.00622.96
8.2.160.0180.00020.68
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0060.00317.63
8.2.110.0090.00019.45
8.2.100.0080.00317.58
8.2.90.0040.00717.75
8.2.80.0030.00517.97
8.2.70.0040.00417.80
8.2.60.0040.00417.92
8.2.50.0000.00818.10
8.2.40.0070.00020.45
8.2.30.0040.00418.07
8.2.20.0000.00817.63
8.2.10.0040.00417.56
8.2.00.0070.00017.65
8.1.270.0000.00822.23
8.1.260.0080.00026.35
8.1.250.0120.00828.09
8.1.240.0040.00823.71
8.1.230.0000.01020.87
8.1.220.0030.00517.74
8.1.210.0050.00318.77
8.1.200.0000.00817.38
8.1.190.0030.00517.23
8.1.180.0000.00918.10
8.1.170.0000.00818.46
8.1.160.0000.00721.85
8.1.150.0040.00418.57
8.1.140.0050.00217.36
8.1.130.0030.00317.67
8.1.120.0070.00017.31
8.1.110.0040.00317.21
8.1.100.0070.00017.34
8.1.90.0000.00717.32
8.1.80.0030.00517.23
8.1.70.0080.00017.27
8.1.60.0030.00617.41
8.1.50.0000.00717.40
8.1.40.0040.00417.42
8.1.30.0050.00317.39
8.1.20.0000.00817.50
8.1.10.0000.00717.44
8.1.00.0000.00817.38
8.0.300.0030.00320.03
8.0.290.0000.00716.63
8.0.280.0040.00418.30
8.0.270.0000.00717.07
8.0.260.0050.00316.63
8.0.250.0000.00716.87
8.0.240.0000.00716.84
8.0.230.0080.00016.79
8.0.220.0030.00316.68
8.0.210.0040.00416.80
8.0.200.0030.00516.89
8.0.190.0040.00416.84
8.0.180.0050.00216.77
8.0.170.0030.00616.88
8.0.160.0040.00416.82
8.0.150.0000.00716.72
8.0.140.0040.00416.78
8.0.130.0000.00613.34
8.0.120.0000.00716.70
8.0.110.0040.00416.71
8.0.100.0040.00416.81
8.0.90.0040.00416.87
8.0.80.0150.00816.69
8.0.70.0000.00816.59
8.0.60.0050.00216.59
8.0.50.0040.00416.78
8.0.30.0120.00916.94
8.0.20.0110.00917.40
8.0.10.0040.00416.79
8.0.00.0120.01216.69
7.4.330.0000.00515.02
7.4.320.0030.00316.38
7.4.300.0000.00716.41
7.4.290.0040.00416.47
7.4.280.0040.00416.41
7.4.270.0030.00316.39
7.4.260.0070.00016.35
7.4.250.0030.00516.19
7.4.240.0030.00416.50
7.4.230.0040.00416.40
7.4.220.0100.01016.39
7.4.210.0060.00816.44
7.4.200.0000.00716.47
7.4.190.0000.00716.34
7.4.160.0200.00016.47
7.4.150.0100.00717.40
7.4.140.0140.00517.86
7.4.130.0080.00916.35
7.4.120.0130.00716.41
7.4.110.0120.00616.24
7.4.100.0040.01416.32
7.4.90.0070.01016.37
7.4.80.0120.00616.46
7.4.70.0030.01316.45
7.4.60.0080.00816.57
7.4.50.0030.00616.38
7.4.40.0000.01822.77
7.4.30.0110.00416.25
7.4.00.0040.01115.01
7.3.330.0060.00013.21
7.3.320.0060.00013.18
7.3.310.0000.00716.13
7.3.300.0030.00516.18
7.3.290.0000.01416.13
7.3.280.0080.01116.24
7.3.270.0070.01017.40
7.3.260.0100.01016.27
7.3.250.0080.01216.41
7.3.240.0030.01316.48
7.3.230.0080.00816.39
7.3.210.0110.01116.39
7.3.200.0060.01319.39
7.3.190.0040.01716.21
7.3.180.0130.00316.52
7.3.170.0060.00916.44
7.3.160.0150.00616.60
7.3.120.0000.01714.75
7.2.330.0140.00316.30
7.2.320.0140.00316.32
7.2.310.0130.01016.29
7.2.300.0030.01316.72
7.2.290.0040.01316.42
7.1.100.0130.00017.75
7.1.70.0060.00317.10
7.1.60.0070.01719.82
7.1.50.0030.00716.82
7.1.00.0070.07322.48
7.0.200.0060.00616.73
7.0.140.0100.06722.08
7.0.70.0030.04021.66
7.0.60.0030.04021.64
7.0.50.0030.04022.17
7.0.40.0000.04319.95
7.0.30.0030.04720.03
7.0.20.0030.07720.08
7.0.10.0030.03720.16
7.0.00.0000.03720.16
5.6.280.0070.06720.82
5.6.220.0030.04020.66
5.6.210.0070.03720.75
5.6.200.0030.04021.09
5.6.190.0000.03720.95
5.6.180.0030.05021.07
5.6.170.0030.04021.07
5.6.160.0070.04021.04
5.6.150.0000.04021.04
5.6.140.0030.04021.11
5.6.130.0070.03021.11
5.6.120.0030.03721.11
5.6.110.0000.03721.03
5.6.100.0000.03721.11
5.6.90.0000.04321.01
5.6.80.0030.03720.39
5.6.70.0000.04020.33
5.6.60.0030.03720.55
5.6.50.0100.03020.37
5.6.40.0000.05320.44
5.6.30.0000.07320.45
5.6.20.0000.05720.40
5.6.10.0000.06020.27
5.6.00.0030.07720.35
5.5.360.0000.04320.36
5.5.350.0030.04020.42
5.5.340.0100.03320.88
5.5.330.0070.04320.93
5.5.320.0000.04020.76
5.5.310.0030.03320.80
5.5.300.0030.03320.64
5.5.290.0030.03320.91
5.5.280.0030.04320.84
5.5.270.0030.05320.75
5.5.260.0000.04320.75
5.5.250.0070.06720.64
5.5.240.0070.03320.18
5.5.230.0030.04320.27
5.5.220.0030.03320.25
5.5.210.0070.03320.10
5.5.200.0030.03720.29
5.5.190.0070.03020.11
5.5.180.0030.03020.22
5.5.160.0070.04020.23
5.5.150.0070.07320.22
5.5.140.0070.07320.14
5.5.130.0130.07020.24
5.5.120.0100.07720.16
5.5.110.0030.07720.07
5.5.100.0000.07320.14
5.5.90.0130.03319.94
5.5.80.0100.07320.14
5.5.70.0070.04720.11
5.5.60.0030.07020.04
5.5.50.0100.06020.04
5.5.40.0000.04720.04
5.5.30.0000.07720.05
5.5.20.0030.06320.14
5.5.10.0030.08020.11
5.5.00.0000.06720.08
5.4.450.0000.03319.36
5.4.440.0000.03319.36
5.4.430.0000.05319.53
5.4.420.0000.04019.32
5.4.410.0030.03719.24
5.4.400.0070.03319.16
5.4.390.0000.07718.94
5.4.380.0030.05318.91
5.4.370.0030.03719.12
5.4.360.0000.03719.05
5.4.350.0030.07719.23
5.4.340.0000.04318.85
5.4.320.0070.07719.21
5.4.310.0070.06019.07
5.4.300.0000.07719.04
5.4.290.0070.06719.22
5.4.280.0070.04019.02
5.4.270.0130.07018.87
5.4.260.0070.07719.16
5.4.250.0100.07318.94
5.4.240.0030.08319.02
5.4.230.0100.06719.20
5.4.220.0070.07719.04
5.4.210.0000.08019.13
5.4.200.0070.03719.02
5.4.190.0000.06719.04
5.4.180.0070.06719.02
5.4.170.0030.07318.93
5.4.160.0070.07018.86
5.4.150.0070.07319.01
5.4.140.0000.07716.51
5.4.130.0000.07716.41
5.4.120.0000.07316.41
5.4.110.0030.07716.32
5.4.100.0070.07016.36
5.4.90.0030.04316.45
5.4.80.0030.07316.33
5.4.70.0000.04716.33
5.4.60.0000.06316.41
5.4.50.0030.07716.46
5.4.40.0100.05716.46
5.4.30.0070.07316.34
5.4.20.0070.07016.24
5.4.10.0030.04016.31
5.4.00.0030.03715.87
5.3.290.0030.08314.65
5.3.280.0070.06314.60
5.3.270.0070.07714.62
5.3.260.0100.07014.53
5.3.250.0070.07714.71
5.3.240.0030.07714.63
5.3.230.0000.08314.59
5.3.220.0030.05014.55
5.3.210.0000.07714.62
5.3.200.0000.06314.69
5.3.190.0000.06314.70
5.3.180.0100.04014.62
5.3.170.0030.06014.61
5.3.160.0000.05014.62
5.3.150.0070.07014.70
5.3.140.0030.07014.57
5.3.130.0030.07714.64
5.3.120.0070.06714.66
5.3.110.0100.05714.64
5.3.100.0030.07714.09
5.3.90.0000.05714.14
5.3.80.0000.04714.12
5.3.70.0100.06313.94
5.3.60.0070.07013.92
5.3.50.0000.07313.86
5.3.40.0030.07713.84
5.3.30.0070.07313.81
5.3.20.0030.04313.67
5.3.10.0030.07313.76
5.3.00.0030.07713.55
5.2.170.0070.05712.33
5.2.160.0070.04012.33
5.2.150.0070.06312.33
5.2.140.0030.06012.33
5.2.130.0030.06012.33
5.2.120.0000.06012.33
5.2.110.0000.06012.33
5.2.100.0000.06312.33
5.2.90.0030.06012.33
5.2.80.0000.05012.33
5.2.70.0030.06012.33
5.2.60.0030.04312.33
5.2.50.0030.06312.33
5.2.40.0030.06012.33
5.2.30.0070.06012.33
5.2.20.0070.05012.33
5.2.10.0000.06312.33
5.2.00.0000.05312.33
5.1.60.0070.04712.33
5.1.50.0030.05012.33
5.1.40.0070.04712.33
5.1.30.0000.06312.33
5.1.20.0030.04712.33
5.1.10.0000.06012.33
5.1.00.0070.05012.33
5.0.50.0000.04012.33
5.0.40.0000.04712.33
5.0.30.0030.04312.33
5.0.20.0000.04712.33
5.0.10.0030.03312.33
5.0.00.0070.06012.33
4.4.90.0000.02712.33
4.4.80.0000.03312.33
4.4.70.0000.03712.33
4.4.60.0030.03312.33
4.4.50.0030.03312.33
4.4.40.0030.05012.33
4.4.30.0000.02712.33
4.4.20.0000.03712.33
4.4.10.0000.04012.33
4.4.00.0000.05312.33
4.3.110.0000.03012.33
4.3.100.0000.03712.33
4.3.90.0000.03712.33
4.3.80.0000.04312.33
4.3.70.0070.03012.33
4.3.60.0070.03012.33
4.3.50.0000.03712.33
4.3.40.0000.05312.33
4.3.30.0000.02712.33
4.3.20.0000.03012.33
4.3.10.0000.03712.33
4.3.00.0030.03012.33

preferences:
53.56 ms | 400 KiB | 5 Q