3v4l.org

run code in 300+ PHP versions simultaneously
<?php //código com o problema function &olaMundoRef(){ return 'Ola mundo'; } //código sem problema function &olaMundo(){ $x = 'Ola mundo'; return $x; } echo olaMundoRef(); echo olaMundo();

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)
8.3.60.0130.00618.68
8.3.50.0170.01422.10
8.3.40.0080.00818.97
8.3.30.0110.00418.70
8.3.20.0070.00019.39
8.3.10.0040.00421.77
8.3.00.0040.00419.38
8.2.180.0030.01418.26
8.2.170.0120.00322.96
8.2.160.0030.01020.52
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0080.00021.00
8.2.110.0030.00719.30
8.2.100.0090.00319.88
8.2.90.0000.00819.05
8.2.80.0030.00617.97
8.2.70.0060.00317.63
8.2.60.0000.00917.91
8.2.50.0000.00918.07
8.2.40.0060.00318.15
8.2.30.0040.00418.12
8.2.20.0000.00718.12
8.2.10.0070.00018.05
8.2.00.0000.00917.65
8.1.280.0090.00625.92
8.1.270.0080.00820.43
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00722.60
8.1.230.0110.00022.13
8.1.220.0080.00017.77
8.1.210.0000.00818.77
8.1.200.0040.00417.35
8.1.190.0080.00017.23
8.1.180.0000.00818.10
8.1.170.0050.00318.65
8.1.160.0000.00718.77
8.1.150.0030.00320.16
8.1.140.0050.00219.54
8.1.130.0000.00818.85
8.1.120.0070.00017.40
8.1.110.0050.00217.43
8.1.100.0040.00417.41
8.1.90.0030.00617.40
8.1.80.0000.00717.28
8.1.70.0030.00617.24
8.1.60.0050.00317.61
8.1.50.0050.00317.41
8.1.40.0050.00317.43
8.1.30.0050.00317.65
8.1.20.0080.00017.63
8.1.10.0060.00317.40
8.1.00.0050.00317.32
8.0.300.0080.00018.77
8.0.290.0040.00416.75
8.0.280.0070.00018.43
8.0.270.0000.00717.13
8.0.260.0030.00317.23
8.0.250.0070.00016.98
8.0.240.0060.00016.89
8.0.230.0030.00316.99
8.0.220.0000.00716.92
8.0.210.0030.00316.90
8.0.200.0070.00416.93
8.0.190.0070.00016.91
8.0.180.0080.00016.84
8.0.170.0030.00316.90
8.0.160.0040.00416.93
8.0.150.0030.00316.73
8.0.140.0070.00016.74
8.0.130.0060.00013.30
8.0.120.0000.00816.89
8.0.110.0020.00516.68
8.0.100.0030.00416.75
8.0.90.0000.00816.73
8.0.80.0060.00916.80
8.0.70.0070.00016.88
8.0.60.0050.00316.73
8.0.50.0070.00016.87
8.0.30.0110.00517.07
8.0.20.0080.01117.40
8.0.10.0050.00316.82
8.0.00.0120.00416.98
7.4.330.0020.00215.55
7.4.320.0060.00016.36
7.4.300.0000.00616.50
7.4.290.0000.00816.57
7.4.280.0050.00316.50
7.4.270.0030.00316.57
7.4.260.0030.00616.56
7.4.250.0070.00016.53
7.4.240.0030.00316.51
7.4.230.0070.00016.62
7.4.220.0060.01616.60
7.4.210.0070.01016.51
7.4.200.0030.00316.61
7.4.160.0000.01716.36
7.4.150.0140.00417.40
7.4.140.0090.00817.86
7.4.130.0120.00916.55
7.4.120.0080.00916.41
7.4.110.0150.00316.62
7.4.100.0130.00316.50
7.4.90.0060.01216.39
7.4.80.0140.00619.39
7.4.70.0110.00616.36
7.4.60.0090.00616.80
7.4.50.0110.00416.46
7.4.40.0140.00316.46
7.4.30.0030.01416.51
7.4.10.0100.00614.90
7.4.00.0070.00814.79
7.3.330.0050.00013.30
7.3.320.0030.00313.37
7.3.310.0050.00316.23
7.3.300.0000.00716.18
7.3.290.0000.00716.27
7.3.280.0070.01116.33
7.3.270.0080.00817.40
7.3.260.0130.00816.45
7.3.250.0050.01216.47
7.3.240.0120.00716.31
7.3.230.0060.01016.29
7.3.210.0070.01316.46
7.3.200.0030.01416.44
7.3.190.0110.01116.48
7.3.180.0100.00616.30
7.3.170.0130.00316.18
7.3.160.0170.00716.47
7.3.130.0000.01414.45
7.3.120.0070.01114.94
7.3.110.0060.01014.71
7.3.100.0040.01214.89
7.3.90.0100.00314.83
7.3.80.0110.00214.92
7.3.70.0020.01214.53
7.3.60.0050.00714.75
7.3.50.0090.00714.61
7.3.40.0050.00914.59
7.3.30.0040.00614.75
7.3.20.0090.00316.52
7.3.10.0070.00616.60
7.3.00.0040.01116.18
7.2.330.0100.00616.54
7.2.320.0120.00916.21
7.2.310.0060.00916.67
7.2.300.0060.01216.32
7.2.290.0080.01116.72
7.2.260.0000.01814.39
7.2.250.0090.00914.90
7.2.240.0080.00914.98
7.2.230.0040.01114.89
7.2.220.0000.01315.06
7.2.210.0090.00714.79
7.2.200.0050.00814.74
7.2.190.0040.00814.82
7.2.180.0070.00614.85
7.2.170.0030.00914.96
7.2.160.0000.01314.72
7.2.150.0030.00716.57
7.2.140.0070.00716.50
7.2.130.0050.00716.56
7.2.120.0110.00616.63
7.2.110.0090.00616.45
7.2.100.0100.01016.50
7.2.90.0320.01115.95
7.2.80.0210.00715.91
7.2.70.0420.00715.78
7.2.60.0150.01016.30
7.2.50.0090.00815.98
7.2.40.0340.01315.78
7.2.30.0370.00615.86
7.2.20.0170.00516.02
7.2.10.0240.00615.95
7.2.00.0380.01015.97
7.1.330.0060.00715.69
7.1.320.0040.00515.50
7.1.310.0040.00915.50
7.1.300.0080.00415.46
7.1.290.0030.01015.61
7.1.280.0030.00815.66
7.1.270.0070.00715.52
7.1.260.0030.00915.37
7.1.250.0060.00615.33
7.1.240.0030.00715.26
7.1.230.0040.01115.46
7.1.220.0040.01115.71
7.1.210.0650.00514.58
7.1.200.0070.00714.78
7.1.190.0190.00614.51
7.1.180.0670.00614.42
7.1.170.0400.00514.71
7.1.160.0440.00514.43
7.1.150.0540.01114.69
7.1.140.0400.01114.65
7.1.130.0070.01014.54
7.1.120.0150.00814.76
7.1.110.0210.00614.73
7.1.100.0360.00914.45
7.1.90.0050.01214.64
7.1.80.0080.00614.50
7.1.70.0330.00815.80
7.1.60.0410.00624.82
7.1.50.0690.00827.23
7.1.40.0470.01027.27
7.1.30.0480.00827.18
7.1.20.0150.00927.11
7.1.10.0410.00615.23
7.1.00.0070.02217.15
7.0.330.0050.00515.46
7.0.320.0080.00815.25
7.0.310.0110.00414.29
7.0.300.0130.00514.38
7.0.290.0510.00814.23
7.0.280.0470.00514.28
7.0.270.0110.00914.19
7.0.260.0650.00814.39
7.0.250.0120.00614.31
7.0.240.0290.00714.38
7.0.230.0680.00714.28
7.0.220.0320.00214.55
7.0.210.0550.00714.39
7.0.200.0030.00815.52
7.0.190.0170.00715.06
7.0.180.0450.01014.81
7.0.170.0460.00915.01
7.0.160.0070.00614.91
7.0.150.0100.01014.97
7.0.140.0170.02016.59
7.0.130.0060.02016.80
7.0.120.0280.02016.83
7.0.110.0340.01816.59
7.0.100.0390.01616.75
7.0.90.0280.02116.58
7.0.80.0070.02016.78
7.0.70.0130.01816.71
7.0.60.0090.02216.63
7.0.50.0170.01816.62
7.0.40.0080.01916.24
7.0.30.0200.02116.27
7.0.20.0260.02116.17
7.0.10.0300.02316.30
7.0.00.0390.01316.27
5.6.400.0090.00613.98
5.6.390.0000.01014.27
5.6.380.0000.00813.89
5.6.370.0100.00714.14
5.6.360.0040.00713.89
5.6.350.0070.00313.82
5.6.340.0090.00613.95
5.6.330.0070.00313.97
5.6.320.0030.01314.00
5.6.310.0110.00314.22
5.6.300.0090.02116.33
5.6.290.0090.03517.51
5.6.280.0100.03017.56
5.6.270.0090.03217.64
5.6.260.0090.03117.70
5.6.250.0120.03617.59
5.6.240.0170.03317.42
5.6.230.0080.03417.52
5.6.220.0100.03217.61
5.6.210.0090.03517.62
5.6.200.0080.03817.55
5.6.190.0110.03017.52
5.6.180.0090.03317.57
5.6.170.0090.03217.54
5.6.160.0060.03517.65
5.6.150.0120.03017.48
5.6.140.0120.03317.51
5.6.130.0110.03017.55
5.6.120.0090.03417.58
5.6.110.0100.03317.52
5.6.100.0110.03617.56
5.6.90.0100.03417.48
5.6.80.0090.03117.21
5.6.70.0080.03417.13
5.6.60.0080.03317.23
5.6.50.0070.03417.24
5.6.40.0080.03217.12
5.6.30.0150.02717.15
5.6.20.0110.03017.20
5.6.10.0090.03217.15
5.6.00.0090.02917.12

preferences:
65.77 ms | 401 KiB | 5 Q