3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set("display_errors","On"); error_reporting(E_ALL); function without($var){ echo "Certain death\n"; $var.='die fucker DIE! ajajajajajajjjkajklsdjklasjdklasd'; echo memory_get_usage(), PHP_EOL; } function with(&$var){ echo "Alive\n"; echo memory_get_usage(), PHP_EOL; } $str = str_repeat('foo', 10000000); echo memory_get_usage(), PHP_EOL; echo "END\n"; with($str); without($str);

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)
7.4.00.0530.02671.83
7.3.120.0510.02971.74
7.3.110.0400.02372.09
7.3.100.0240.03571.70
7.3.90.0270.02771.62
7.3.80.0200.03071.88
7.3.70.0260.02371.57
7.3.60.0270.02071.59
7.3.50.0420.02971.48
7.3.40.0370.02371.40
7.3.30.0590.00771.72
7.3.20.0100.01773.87
7.3.10.0090.01873.48
7.3.00.0220.01373.51
7.2.250.0330.04672.16
7.2.240.0390.03971.91
7.2.230.0290.01972.05
7.2.220.0240.03172.39
7.2.210.0360.01772.11
7.2.200.0330.01772.07
7.2.190.0300.02071.95
7.2.180.0300.03772.29
7.2.170.0400.02772.25
7.2.160.0370.01772.36
7.2.150.0530.01073.81
7.2.140.0200.01773.91
7.2.130.0170.01373.79
7.2.120.0440.01073.67
7.2.110.0190.01074.01
7.2.100.0130.02074.04
7.2.90.0160.01673.85
7.2.80.0100.01673.99
7.2.70.0270.01374.08
7.2.60.0140.02074.15
7.2.50.0190.00973.84
7.2.40.0160.01374.03
7.2.30.0280.02374.07
7.2.20.0230.01674.05
7.2.10.0300.01373.85
7.2.00.3150.01575.21
7.1.330.0140.02473.07
7.1.320.0090.01972.76
7.1.310.0130.01372.85
7.1.300.0060.01672.81
7.1.290.0420.01072.86
7.1.280.0160.02272.95
7.1.270.0160.01372.70
7.1.260.0130.02072.74
7.1.250.0110.02172.86
7.1.240.0100.02072.92
7.1.230.0170.01072.61
7.1.220.0150.00972.90
7.1.210.0060.02672.99
7.1.200.0100.01373.05
7.1.190.0110.01873.05
7.1.180.0100.01772.89
7.1.170.0130.01072.93
7.1.160.0200.01072.63
7.1.150.0170.02473.01
7.1.140.0220.02273.01
7.1.130.0030.02773.04
7.1.120.0200.02072.89
7.1.110.0090.01573.07
7.1.100.0160.01972.88
7.1.90.0210.01072.71
7.1.80.0160.01372.80
7.1.70.0220.01073.60
7.1.60.0160.02573.84
7.1.50.0640.03273.68
7.1.40.0130.01772.85
7.1.30.0070.02772.96
7.1.20.0200.02472.67
7.1.10.0210.02872.93
7.1.00.0220.05176.18
7.0.330.0140.02172.62
7.0.320.0100.01472.54
7.0.310.0120.00972.68
7.0.300.0100.01872.41
7.0.290.0130.02072.70
7.0.280.0250.01772.54
7.0.270.0030.02372.77
7.0.260.0100.02672.61
7.0.250.0100.01772.54
7.0.240.0170.01772.65
7.0.230.0180.01472.67
7.0.220.0160.00672.49
7.0.210.0060.02372.80
7.0.200.1200.01673.19
7.0.190.0070.01772.42
7.0.180.0240.00772.31
7.0.170.0200.01372.56
7.0.160.0320.01572.70
7.0.150.0270.02072.67
7.0.140.0220.04875.87
7.0.130.0140.02572.65
7.0.120.0100.02872.61
7.0.110.0340.01572.67
7.0.100.0840.00972.45
7.0.90.0170.02272.57
7.0.80.0330.00772.40
7.0.70.0180.01172.38
7.0.60.0500.05574.80
7.0.50.0260.04573.74
7.0.40.0250.04673.82
7.0.30.0840.03473.74
7.0.20.0650.03673.74
7.0.10.0230.03473.72
7.0.00.0330.03373.77
5.6.400.0360.02371.54
5.6.390.0390.02371.40
5.6.380.0400.02071.62
5.6.370.0240.02771.36
5.6.360.0480.02271.32
5.6.350.0520.01771.46
5.6.340.0330.02371.51
5.6.330.0230.02371.30
5.6.320.0300.02071.52
5.6.310.0310.02171.84
5.6.300.0320.03571.52
5.6.290.0370.04171.81
5.6.280.0240.05274.64
5.6.270.0480.02471.54
5.6.260.0400.02371.43
5.6.250.0330.02071.55
5.6.240.0400.02071.70
5.6.230.0460.01071.72
5.6.220.0170.03471.31
5.6.210.0340.04574.59
5.6.200.0230.03773.37
5.6.190.0430.05174.59
5.6.180.0880.06174.68
5.6.170.0850.04574.50
5.6.160.0390.06073.56
5.6.150.0270.03873.59
5.6.140.0430.04573.48
5.6.130.0340.03873.54
5.6.120.0330.06674.96
5.6.110.0350.03074.92
5.6.100.0420.05474.90
5.6.90.0390.05474.88
5.6.80.0340.06474.42
5.6.70.0500.02571.31
5.6.60.0430.02271.60
5.6.50.0480.01171.32
5.6.40.0480.02071.23
5.6.30.0440.02771.49
5.6.20.0410.02171.49
5.6.10.0450.02771.48
5.6.00.0250.03571.50
5.5.380.0500.01471.27
5.5.370.0270.03071.60
5.5.360.0260.03071.59
5.5.350.0590.04774.65
5.5.340.0230.03873.22
5.5.330.0390.05574.21
5.5.320.0200.05774.33
5.5.310.0880.03874.42
5.5.300.0230.03873.28
5.5.290.0280.05573.23
5.5.280.0280.04074.83
5.5.270.0250.03774.77
5.5.260.0350.05874.52
5.5.250.0350.06274.43
5.5.240.0800.04374.28
5.5.230.0340.02071.43
5.5.220.0340.01771.27
5.5.210.0320.02271.29
5.5.200.0320.02671.61
5.5.190.0360.01071.38
5.5.180.0390.01971.43
5.5.170.0440.01771.18
5.5.160.0440.01071.47
5.5.150.0300.02071.36
5.5.140.0300.02071.51
5.5.130.0200.02671.24
5.5.120.0400.01371.18
5.5.110.0340.02471.40
5.5.100.0320.01371.21
5.5.90.0330.02071.35
5.5.80.0290.01671.25
5.5.70.0330.01771.30
5.5.60.0200.03071.03
5.5.50.0470.01071.37
5.5.40.0410.01071.25
5.5.30.0310.02071.35
5.5.20.0350.01971.11
5.5.10.0330.01671.63
5.5.00.0330.02671.15
5.4.450.0990.03272.43
5.4.440.0570.04072.47
5.4.430.0980.04072.09
5.4.420.0630.03572.22
5.4.410.0530.03372.29
5.4.400.0680.03072.14
5.4.390.0830.03372.12
5.4.380.1120.04772.00
5.4.370.1180.05072.07
5.4.360.1050.05072.03
5.4.350.1180.04072.08
5.4.340.1090.04372.10
5.4.330.0340.02468.21
5.4.320.0200.03969.06
5.4.310.0300.02868.98
5.4.300.0270.03368.78
5.4.290.0290.03068.89
5.4.280.0250.03468.83
5.4.270.0320.02868.93
5.4.260.0230.03468.90
5.4.250.0210.04068.89
5.4.240.0260.03269.03
5.4.230.0280.03469.00
5.4.220.0220.03268.86
5.4.210.0300.02768.94
5.4.200.0250.03268.87
5.4.190.0330.02868.88
5.4.180.0260.03268.92
5.4.170.0280.03068.88
5.4.160.0300.03168.86
5.4.150.0260.03468.69
5.4.140.0240.03868.74
5.4.130.0280.03768.95
5.4.120.0280.03468.82
5.4.110.0190.04468.75
5.4.100.0240.03868.65
5.4.90.0230.03968.72
5.4.80.0220.04668.79
5.4.70.0290.03768.81
5.4.60.0380.03768.63
5.4.50.0330.03968.80
5.4.40.0360.03568.64
5.4.30.0240.04468.62
5.4.20.0290.03968.79
5.4.10.0320.02468.74
5.4.00.0270.03068.43
5.3.290.0190.05069.93
5.3.280.0270.04369.86
5.3.270.0210.05669.88
5.3.260.0220.05569.87
5.3.250.0250.04369.88
5.3.240.0210.05069.87
5.3.230.0300.06469.86
5.3.220.0170.05769.84
5.3.210.0200.05469.83
5.3.200.0240.05069.84
5.3.190.0270.05369.84
5.3.180.0260.04869.83
5.3.170.0330.06269.83
5.3.160.0210.05269.83
5.3.150.0310.06569.83
5.3.140.0290.06469.82
5.3.130.0270.06469.82
5.3.120.0210.07169.82
5.3.110.0190.05169.82
5.3.100.0190.04669.31
5.3.90.0210.04869.30
5.3.80.0140.06169.29
5.3.70.0170.05069.29
5.3.60.0160.05069.28
5.3.50.0180.04869.21
5.3.40.0250.04269.21
5.3.30.0230.04269.17
5.3.20.0190.04768.96
5.3.10.0180.04868.92
5.3.00.0150.05268.91
5.2.170.0200.03966.40
5.2.160.0190.03966.40
5.2.150.0250.03666.40
5.2.140.0220.03866.39
5.2.130.0240.03466.36
5.2.120.0180.04066.36
5.2.110.0160.04266.36
5.2.100.0210.03766.35
5.2.90.0160.04366.35
5.2.80.0150.04466.35
5.2.70.0200.04066.35
5.2.60.0230.04066.30
5.2.50.0220.04066.28
5.2.40.0190.04566.25
5.2.30.0200.04166.22
5.2.20.0130.04566.21
5.2.10.0200.03866.12
5.2.00.0170.03437.37
5.1.60.0180.03736.66
5.1.50.0220.03136.64
5.1.40.0130.03736.63
5.1.30.0220.03736.98
5.1.20.0130.03137.00
5.1.10.0100.03436.73
5.1.00.0150.02936.72
5.0.50.0120.02535.20
5.0.40.0100.02635.06
5.0.30.0100.03934.88
5.0.20.0110.03234.83
5.0.10.0120.02834.82
5.0.00.0120.03534.81
4.4.90.0120.02033.24
4.4.80.0090.02333.22
4.4.70.0100.02133.21
4.4.60.0090.02233.22
4.4.50.0130.01833.23
4.4.40.0110.03033.23
4.4.30.0090.02133.22
4.4.20.0110.02933.29
4.4.10.0090.02633.29
4.4.00.0100.03133.25
4.3.110.0070.02533.16
4.3.100.0080.02433.16
4.3.90.0130.02033.14
4.3.80.0110.02933.14
4.3.70.0090.02133.13
4.3.60.0130.01733.14
4.3.50.0110.02133.13
4.3.40.0090.03433.08
4.3.30.0130.01831.89
4.3.20.0100.02331.87
4.3.10.0100.02131.83
4.3.00.0900.02333.09

preferences:
38.81 ms | 400 KiB | 5 Q