3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(&$var) { $var++; } function &bar() // Note the missing & { $a = 5; return $a; } foo(bar()); // Produces fatal error since PHP 5.0.5 foo($a = 5); // Expression, not variable

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)
8.3.70.0030.01718.56
8.3.60.0090.01218.56
8.3.50.0210.00316.41
8.3.40.0100.00518.74
8.3.30.0040.01118.97
8.3.20.0060.00318.81
8.3.10.0040.00418.68
8.3.00.0000.01019.38
8.2.180.0080.00818.38
8.2.170.0110.00422.96
8.2.160.0030.01218.95
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0030.00617.63
8.2.110.0070.00320.53
8.2.100.0040.00817.78
8.2.90.0000.00919.14
8.2.80.0040.00417.97
8.2.70.0060.00317.63
8.2.60.0060.00317.80
8.2.50.0000.00817.93
8.2.40.0080.00020.07
8.2.30.0030.00617.84
8.2.20.0030.00717.78
8.2.10.0000.00817.74
8.2.00.0040.00417.73
8.1.280.0110.00725.92
8.1.270.0000.00824.02
8.1.260.0020.00526.35
8.1.250.0080.00028.09
8.1.240.0060.00323.79
8.1.230.0030.00722.13
8.1.220.0000.00817.74
8.1.210.0060.00318.77
8.1.200.0040.00417.35
8.1.190.0040.00417.35
8.1.180.0080.00018.10
8.1.170.0040.00417.62
8.1.160.0030.00518.94
8.1.150.0040.00418.56
8.1.140.0000.00717.39
8.1.130.0030.00317.88
8.1.120.0000.00817.44
8.1.110.0030.00517.33
8.1.100.0000.00717.36
8.1.90.0020.00517.37
8.1.80.0000.00717.41
8.1.70.0070.00017.39
8.1.60.0060.00317.58
8.1.50.0000.00717.49
8.1.40.0040.00417.41
8.1.30.0040.00417.56
8.1.20.0080.00317.64
8.1.10.0040.00417.53
8.1.00.0000.00817.52
8.0.300.0050.00518.77
8.0.290.0000.00716.63
8.0.280.0020.00518.61
8.0.270.0040.00317.12
8.0.260.0040.00416.82
8.0.250.0090.00016.85
8.0.240.0070.00016.81
8.0.230.0000.00716.87
8.0.220.0050.00316.80
8.0.210.0000.00716.80
8.0.200.0030.00316.87
8.0.190.0030.00716.97
8.0.180.0050.00316.91
8.0.170.0040.00416.75
8.0.160.0000.00816.82
8.0.150.0040.00416.77
8.0.140.0050.00216.84
8.0.130.0030.00313.24
8.0.120.0030.00716.85
8.0.110.0000.00716.78
8.0.100.0000.00716.89
8.0.90.0040.00416.82
8.0.80.0030.01316.86
8.0.70.0070.00016.93
8.0.60.0000.00716.68
8.0.50.0040.00416.73
8.0.30.0060.00916.98
8.0.20.0260.02017.00
8.0.10.0040.00416.80
8.0.00.0120.01016.71
7.4.330.0060.00012.95
7.4.320.0000.00616.51
7.4.300.0040.00416.49
7.4.290.0050.00216.52
7.4.280.0000.00716.52
7.4.270.0000.00616.55
7.4.260.0050.00013.16
7.4.250.0030.00616.61
7.4.240.0030.00316.44
7.4.230.0070.00016.43
7.4.220.0060.01316.51
7.4.210.0070.01316.60
7.4.200.0000.00716.63
7.4.190.0050.00316.50
7.4.160.0100.01316.38
7.4.150.0090.00816.48
7.4.140.0100.00716.45
7.4.130.0130.00316.48
7.4.120.0090.00916.36
7.4.110.0150.00316.59
7.4.100.0100.00716.53
7.4.90.0160.00616.47
7.4.80.0090.00919.39
7.4.70.0030.01316.52
7.4.60.0070.00716.35
7.4.50.0060.00616.25
7.4.40.0110.00416.55
7.4.30.0140.00716.44
7.4.00.0080.00814.98
7.3.330.0030.00313.37
7.3.320.0060.00013.28
7.3.310.0070.00016.21
7.3.300.0030.00316.40
7.3.290.0080.00816.34
7.3.280.0110.00716.30
7.3.270.0100.00716.49
7.3.260.0100.00716.33
7.3.250.0110.00716.48
7.3.240.0090.01216.45
7.3.230.0150.00616.30
7.3.210.0190.00016.59
7.3.200.0080.00816.59
7.3.190.0110.00616.39
7.3.180.0070.00716.17
7.3.170.0130.00716.25
7.3.160.0030.01216.47
7.3.120.0100.00715.01
7.3.10.0030.01016.70
7.3.00.0110.00316.37
7.2.330.0060.01216.61
7.2.320.0080.01516.45
7.2.310.0070.01716.27
7.2.300.0040.01216.60
7.2.290.0110.00716.32
7.2.130.0060.01016.51
7.2.120.0050.00816.75
7.2.110.0050.00816.55
7.2.100.0070.00916.79
7.2.90.0050.00916.60
7.2.80.0080.00716.74
7.2.70.0050.01216.66
7.2.60.0070.00716.77
7.2.50.0060.00916.65
7.2.40.0050.00716.62
7.2.30.0070.01016.44
7.2.20.0070.00716.67
7.2.10.0070.00916.78
7.2.00.0100.00716.60
7.1.250.0070.00515.65
7.1.240.0180.00015.52
7.1.230.0140.00515.20
7.1.220.0070.01115.41
7.1.210.0150.00415.43
7.1.200.0090.00615.42
7.1.190.0170.00315.52
7.1.180.0090.00615.38
7.1.170.0090.00615.57
7.1.160.0150.00015.43
7.1.150.0070.01115.44
7.1.140.0100.00715.26
7.1.130.0140.00415.39
7.1.120.0070.01015.41
7.1.110.0130.00315.52
7.1.100.0070.00715.28
7.1.90.0060.00615.43
7.1.80.0130.00315.52
7.1.70.0100.00516.24
7.1.60.0090.01017.46
7.1.50.0060.01116.02
7.1.40.0060.01315.60
7.1.30.0160.00015.63
7.1.20.0070.01115.35
7.1.10.0120.00815.48
7.1.00.0060.04118.72
7.0.330.0000.00915.13
7.0.320.0040.01115.05
7.0.310.0040.00415.09
7.0.300.0090.00614.73
7.0.290.0040.01115.01
7.0.280.0140.00414.94
7.0.270.0070.01114.92
7.0.260.0110.00414.86
7.0.250.0110.00314.99
7.0.240.0110.00414.96
7.0.230.0080.00715.06
7.0.220.0100.00315.26
7.0.210.0120.00615.19
7.0.200.0070.00715.73
7.0.190.0080.00514.81
7.0.180.0100.00715.37
7.0.170.0100.00715.13
7.0.160.0130.00015.12
7.0.150.0070.00314.95
7.0.140.0050.04318.50
7.0.130.0090.00315.16
7.0.120.0100.01718.66
7.0.110.0140.00415.18
7.0.100.0120.00315.20
7.0.90.0070.01115.22
7.0.80.0070.00715.24
7.0.70.0120.00815.39
7.0.60.0070.04717.41
7.0.50.0050.02516.51
7.0.40.0070.02516.49
7.0.30.0030.02716.77
7.0.20.0080.02316.60
7.0.10.0030.02616.55
7.0.00.0030.03816.53
5.6.380.0070.00713.92
5.6.370.0050.00313.81
5.6.360.0060.00914.05
5.6.350.0040.01414.00
5.6.340.0070.00713.88
5.6.330.0030.00914.20
5.6.320.0070.00714.05
5.6.310.0090.00313.95
5.6.300.0030.01014.41
5.6.290.0070.00313.93
5.6.280.0000.04517.54
5.6.270.0000.01314.16
5.6.260.0080.00614.10
5.6.250.0100.00014.12
5.6.240.0090.00314.21
5.6.230.0030.01314.20
5.6.220.0040.01214.11
5.6.210.0040.04417.30
5.6.200.0050.04015.86
5.6.190.0030.02517.17
5.6.180.0040.04517.26
5.6.170.0070.03317.08
5.6.160.0000.02717.26
5.6.150.0030.02317.26
5.6.140.0030.02717.20
5.6.130.0030.03117.27
5.6.120.0030.02517.27
5.6.110.0050.04217.02
5.6.100.0020.02717.05
5.6.90.0030.03917.10
5.6.80.0040.02416.89
5.6.70.0050.04416.78
5.6.60.0100.02216.67
5.6.50.0030.02516.81
5.6.40.0030.02316.79
5.6.30.0080.01816.93
5.6.20.0100.02216.75
5.6.10.0030.02416.75
5.6.00.0080.03316.95
5.5.380.0090.00311.18
5.5.370.0100.00011.18
5.5.360.0030.00311.37
5.5.350.0080.02215.87
5.5.340.0100.04014.58
5.5.330.0030.03315.69
5.5.320.0050.03215.77
5.5.310.0030.02515.75
5.5.300.0040.02215.57
5.5.290.0030.02515.69
5.5.280.0050.03015.57
5.5.270.0030.04215.67
5.5.260.0030.04615.69
5.5.250.0060.03315.60
5.5.240.0040.02315.37
5.5.230.0110.02315.39
5.5.220.0050.03515.34
5.5.210.0020.02615.27
5.5.200.0000.02515.25
5.5.190.0060.02315.25
5.5.180.0030.02215.33
5.5.170.0000.00811.18
5.5.160.0050.02015.34
5.5.150.0030.02715.33
5.5.140.0030.03615.34
5.5.130.0030.02315.32
5.5.120.0020.02815.27
5.5.110.0060.02115.25
5.5.100.0050.02515.23
5.5.90.0040.02515.31
5.5.80.0070.02115.28
5.5.70.0100.01815.36
5.5.60.0030.03915.25
5.5.50.0040.02115.28
5.5.40.0050.02115.24
5.5.30.0050.02715.32
5.5.20.0070.03815.32
5.5.10.0020.02415.25
5.5.00.0000.02515.38
5.4.450.0040.02615.35
5.4.440.0060.04015.29
5.4.430.0010.02415.33
5.4.420.0060.01815.18
5.4.410.0020.03515.20
5.4.400.0020.04215.05
5.4.390.0020.04215.21
5.4.380.0020.04315.16
5.4.370.0020.02315.15
5.4.360.0050.01815.09
5.4.350.0020.02015.08
5.4.340.0030.02115.19
5.4.330.0000.01211.18
5.4.320.0020.02015.16
5.4.310.0020.02015.16
5.4.300.0020.02515.14
5.4.290.0050.02015.05
5.4.280.0010.02315.16
5.4.270.0000.02915.14
5.4.260.0030.01915.02
5.4.250.0030.02215.13
5.4.240.0070.01815.21
5.4.230.0030.02015.21
5.4.220.0080.01815.16
5.4.210.0050.02015.16
5.4.200.0020.02215.01
5.4.190.0050.04015.01
5.4.180.0090.02315.18
5.4.170.0020.02215.02
5.4.160.0050.01915.15
5.4.150.0050.02015.16
5.4.140.0030.02013.81
5.4.130.0040.01913.86
5.4.120.0020.02113.76
5.4.110.0030.02213.82
5.4.100.0040.01713.95
5.4.90.0020.01913.96
5.4.80.0030.01813.94
5.4.70.0020.02213.74
5.4.60.0030.01813.76
5.4.50.0020.02113.72
5.4.40.0020.02113.71
5.4.30.0070.02013.78
5.4.20.0000.02013.71
5.4.10.0050.02513.71
5.4.00.0020.01813.49
5.3.290.0000.02512.93
5.3.280.0020.04412.89
5.3.270.0020.02312.92
5.3.260.0040.02212.94
5.3.250.0020.02412.96
5.3.240.0030.02012.83
5.3.230.0030.02012.89
5.3.220.0050.01712.90
5.3.210.0020.02212.89
5.3.200.0030.02012.95
5.3.190.0020.02212.87
5.3.180.0010.02112.83
5.3.170.0030.01812.87
5.3.160.0030.01912.91
5.3.150.0060.01512.89
5.3.140.0040.01812.87
5.3.130.0020.02012.89
5.3.120.0050.02512.88
5.3.110.0030.01912.86
5.3.100.0050.01712.62
5.3.90.0030.03612.63
5.3.80.0000.02212.60
5.3.70.0030.02012.62
5.3.60.0000.02212.56
5.3.50.0010.01812.51
5.3.40.0030.02012.58
5.3.30.0000.02612.51
5.3.20.0000.03112.46
5.3.10.0020.02012.38
5.3.00.0020.02012.43
5.2.170.0030.03311.71
5.2.160.0040.01511.71
5.2.150.0040.01511.71
5.2.140.0070.01311.71
5.2.130.0040.01911.71
5.2.120.0020.03311.71
5.2.110.0040.02411.71
5.2.100.0050.01711.71
5.2.90.0100.02511.71
5.2.80.0040.03311.71
5.2.70.0020.03011.71
5.2.60.0060.01811.71
5.2.50.0050.03211.71
5.2.40.0010.03611.71
5.2.30.0030.01811.71
5.2.20.0010.02611.71
5.2.10.0030.01611.71
5.2.00.0030.03311.71
5.1.60.0030.01311.71
5.1.50.0050.02711.71
5.1.40.0000.02211.71
5.1.30.0020.01511.71
5.1.20.0000.01911.71
5.1.10.0030.01511.71
5.1.00.0020.03411.71
5.0.50.0020.02011.71
5.0.40.0050.01211.71
5.0.30.0010.02111.71
5.0.20.0020.01211.71
5.0.10.0020.01211.71
5.0.00.0000.01711.71
4.4.90.0000.01911.71
4.4.80.0010.01311.71
4.4.70.0070.00811.71
4.4.60.0040.01811.71
4.4.50.0000.01711.71
4.4.40.0020.01311.71
4.4.30.0020.01411.71
4.4.20.0000.00911.71
4.4.10.0030.01711.71
4.4.00.0000.01911.71
4.3.110.0010.01011.71
4.3.100.0020.00911.71
4.3.90.0010.02011.71
4.3.80.0020.01311.71
4.3.70.0000.01811.71
4.3.60.0030.00711.71
4.3.50.0030.01111.71
4.3.40.0020.01511.71
4.3.30.0020.01311.71
4.3.20.0020.02011.71
4.3.10.0000.02011.71
4.3.00.0030.01411.71

preferences:
62.05 ms | 401 KiB | 5 Q