3v4l.org

run code in 300+ PHP versions simultaneously
<?php function example($str) { is_string($str); } function example_ref(& $str) { is_string($str); } $a = 'xx'; example($a); example_ref($a);

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)
8.3.40.0110.00718.44
8.3.30.0100.00318.79
8.3.20.0000.00720.39
8.3.10.0040.00423.59
8.3.00.0070.00019.13
8.2.170.0070.00722.96
8.2.160.0030.01020.52
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0070.00026.16
8.2.120.0000.00819.77
8.2.110.0030.00620.47
8.2.100.0000.01117.78
8.2.90.0000.00817.63
8.2.80.0000.00817.97
8.2.70.0040.00417.90
8.2.60.0000.00717.97
8.2.50.0040.00418.10
8.2.40.0080.00019.30
8.2.30.0040.00419.10
8.2.20.0040.00417.62
8.2.10.0000.00717.98
8.2.00.0080.00017.67
8.1.270.0030.00618.86
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0090.00023.92
8.1.230.0090.00319.12
8.1.220.0050.00317.74
8.1.210.0000.00820.90
8.1.200.0060.00317.22
8.1.190.0030.00617.22
8.1.180.0090.00018.10
8.1.170.0040.00418.47
8.1.160.0040.00420.79
8.1.150.0040.00418.73
8.1.140.0050.00217.29
8.1.130.0050.00517.73
8.1.120.0030.00317.43
8.1.110.0040.00417.37
8.1.100.0000.00717.27
8.1.90.0040.00417.41
8.1.80.0050.00217.37
8.1.70.0000.00717.29
8.1.60.0040.00417.60
8.1.50.0080.00017.55
8.1.40.0060.00317.54
8.1.30.0000.00917.61
8.1.20.0030.00617.64
8.1.10.0000.00717.57
8.1.00.0000.00717.30
8.0.300.0040.00419.64
8.0.290.0040.00416.63
8.0.280.0070.00018.37
8.0.270.0030.00317.09
8.0.260.0040.00417.06
8.0.250.0000.00716.76
8.0.240.0000.00716.84
8.0.230.0000.00816.92
8.0.220.0070.00016.83
8.0.210.0070.00016.78
8.0.200.0000.00616.87
8.0.190.0000.00716.94
8.0.180.0050.00316.84
8.0.170.0080.00016.70
8.0.160.0060.00316.83
8.0.150.0000.00816.78
8.0.140.0000.00716.82
8.0.130.0080.00013.23
8.0.120.0040.00416.67
8.0.110.0040.00416.86
8.0.100.0040.00416.76
8.0.90.0000.00716.64
8.0.80.0120.00316.71
8.0.70.0070.00016.80
8.0.60.0000.00716.62
8.0.50.0040.00416.86
8.0.30.0030.01616.97
8.0.20.0090.01017.40
8.0.10.0040.00416.94
8.0.00.0100.00716.61
7.4.330.0000.00515.03
7.4.320.0030.00316.52
7.4.300.0030.00316.57
7.4.290.0070.00016.64
7.4.280.0030.00616.58
7.4.270.0030.00316.60
7.4.260.0000.00716.43
7.4.250.0070.00016.55
7.4.240.0050.00216.48
7.4.230.0000.00716.68
7.4.220.0130.00716.50
7.4.210.0040.01516.62
7.4.200.0000.00716.59
7.4.160.0080.00616.44
7.4.150.0150.00317.40
7.4.140.0080.00917.86
7.4.130.0060.01216.54
7.4.120.0120.00716.39
7.4.110.0110.01116.46
7.4.100.0180.00016.54
7.4.90.0080.00816.38
7.4.80.0080.01319.39
7.4.70.0130.00916.36
7.4.60.0110.00816.40
7.4.50.0030.00616.31
7.4.40.0060.00916.30
7.4.30.0100.00616.45
7.4.10.0100.01014.84
7.4.00.0090.00814.88
7.3.330.0020.00213.07
7.3.320.0050.00013.24
7.3.310.0050.00316.20
7.3.300.0070.00016.07
7.3.290.0070.00616.23
7.3.280.0090.01016.24
7.3.270.0110.00617.40
7.3.260.0150.00816.42
7.3.250.0070.01016.24
7.3.240.0170.00716.28
7.3.230.0100.00716.39
7.3.210.0150.00316.20
7.3.200.0140.00719.39
7.3.190.0060.01316.26
7.3.180.0100.00716.28
7.3.170.0060.01216.61
7.3.160.0070.01416.41
7.3.130.0070.01414.98
7.3.120.0120.00414.54
7.3.110.0030.01314.63
7.3.100.0080.00614.72
7.3.90.0030.01014.70
7.3.80.0050.00814.70
7.3.70.0100.00514.80
7.3.60.0080.00714.68
7.3.50.0090.00514.61
7.3.40.0070.00614.54
7.3.30.0030.00714.73
7.3.20.0060.00816.49
7.3.10.0040.00916.62
7.3.00.0110.00516.59
7.2.330.0140.00316.21
7.2.320.0130.00616.55
7.2.310.0060.01016.58
7.2.300.0100.01316.66
7.2.290.0080.00816.70
7.2.260.0100.01014.93
7.2.250.0100.01014.73
7.2.240.0050.01414.92
7.2.230.0080.00714.92
7.2.220.0030.01015.03
7.2.210.0070.00914.89
7.2.200.0090.00814.86
7.2.190.0030.00914.89
7.2.180.0060.00514.71
7.2.170.0070.00914.79
7.2.160.0060.00614.86
7.2.150.0000.01016.80
7.2.140.0090.00616.93
7.2.130.0070.00616.55
7.2.120.0080.00716.68
7.2.110.0070.00716.56
7.2.100.0090.00416.60
7.2.90.0080.00716.68
7.2.80.0110.00516.72
7.2.70.0090.00816.77
7.2.60.0050.01016.69
7.2.50.0070.00816.80
7.2.40.0080.00616.83
7.2.30.0080.00716.67
7.2.20.0080.00916.71
7.2.10.0080.01116.83
7.2.00.0040.00917.47
7.1.330.0070.00715.70
7.1.320.0070.00515.68
7.1.310.0020.01115.84
7.1.300.0080.00715.81
7.1.290.0050.00715.67
7.1.280.0070.00715.67
7.1.270.0040.00715.71
7.1.260.0040.00715.80
7.1.250.0110.00315.60
7.1.240.0070.00615.65
7.1.230.0100.00515.65
7.1.220.0090.00615.63
7.1.210.0070.00815.74
7.1.200.0070.00715.64
7.1.190.0090.00515.58
7.1.180.0080.00915.55
7.1.170.0070.00615.76
7.1.160.0080.00615.74
7.1.150.0090.00315.75
7.1.140.0070.00715.68
7.1.130.0130.00315.52
7.1.120.0100.00515.62
7.1.110.0080.00715.74
7.1.100.0070.00716.27
7.1.90.0080.00615.63
7.1.80.0080.00615.58
7.1.70.0080.00516.01
7.1.60.0060.01116.60
7.1.50.0080.00715.93
7.1.40.0070.00815.55
7.1.30.0070.00615.68
7.1.20.0110.00515.61
7.1.10.0070.00915.51
7.1.00.0050.02417.35
7.0.330.0050.00915.30
7.0.320.0070.00515.17
7.0.310.0090.00515.29
7.0.300.0120.00515.30
7.0.290.0080.00615.27
7.0.280.0130.00215.14
7.0.270.0110.00515.24
7.0.260.0070.00915.32
7.0.250.0060.00715.46
7.0.240.0050.00815.45
7.0.230.0070.00415.27
7.0.220.0060.00715.39
7.0.210.0080.00415.48
7.0.200.0050.01015.65
7.0.190.0070.00915.40
7.0.180.0100.00415.31
7.0.170.0090.00615.22
7.0.160.0090.00615.34
7.0.150.0070.00515.33
7.0.140.0080.01217.05
7.0.130.0050.01015.41
7.0.120.0050.00815.29
7.0.110.0080.00715.25
7.0.100.0100.00515.30
7.0.90.0080.00615.35
7.0.80.0070.00715.36
7.0.70.0090.00515.40
7.0.60.0090.02416.42
7.0.50.0060.01516.02
7.0.40.0060.02515.09
7.0.30.0110.01415.05
7.0.20.0120.02615.10
7.0.10.0060.02515.15
7.0.00.0090.01814.91
5.6.400.0060.00314.36
5.6.390.0030.01014.40
5.6.380.0080.00514.17
5.6.370.0080.00414.16
5.6.360.0100.00614.07
5.6.350.0060.00914.04
5.6.340.0020.01014.12
5.6.330.0060.00613.94
5.6.320.0080.00814.08
5.6.310.0090.00614.19
5.6.300.0080.00814.30
5.6.290.0080.00714.18
5.6.280.0010.02815.92
5.6.270.0070.00614.34
5.6.260.0050.01014.02
5.6.250.0130.00314.21
5.6.240.0080.01014.08
5.6.230.0040.01014.14
5.6.220.0070.00914.04
5.6.210.0090.02515.64
5.6.200.0090.02715.01
5.6.190.0060.01615.60
5.6.180.0130.02415.83
5.6.170.0110.01515.71
5.6.160.0060.01915.72
5.6.150.0080.01915.15
5.6.140.0090.01915.12
5.6.130.0080.01715.17
5.6.120.0060.02215.83
5.6.110.0070.02015.96
5.6.100.0090.02315.76
5.6.90.0050.02615.88
5.6.80.0080.02215.56
5.6.70.0070.00613.96
5.6.60.0080.00313.99
5.6.50.0080.00714.21
5.6.40.0040.01114.13
5.6.30.0070.00814.14
5.6.20.0060.00814.07
5.6.10.0080.00613.95
5.6.00.0080.00714.00
5.5.380.0050.00712.21
5.5.370.0090.00512.17
5.5.360.0100.00312.20
5.5.350.0110.02214.23
5.5.340.0100.02013.62
5.5.330.0060.02414.18
5.5.320.0160.01114.15
5.5.310.0140.02314.24
5.5.300.0070.01713.70
5.5.290.0080.02113.67
5.5.280.0030.02714.36
5.5.270.0060.01814.33
5.5.260.0030.02114.37
5.5.250.0070.02514.23
5.5.240.0040.02314.21
5.5.230.0050.00612.15
5.5.220.0030.00712.22
5.5.210.0040.00712.18
5.5.200.0090.00412.20
5.5.190.0060.00412.17
5.5.180.0090.00212.18
5.5.170.0080.00413.10
5.5.160.0050.00812.21
5.5.150.0050.00512.08
5.5.140.0080.00412.01
5.5.130.0070.00612.10
5.5.120.0080.00612.10
5.5.110.0050.00712.21
5.5.100.0060.00512.12
5.5.90.0050.00412.20
5.5.80.0020.01112.09
5.5.70.0060.00612.11
5.5.60.0080.00512.14
5.5.50.0080.00612.14
5.5.40.0090.00612.08
5.5.30.0050.00612.13
5.5.20.0070.00412.07
5.5.10.0080.00512.18
5.5.00.0050.00812.18
5.4.450.0170.01813.13
5.4.440.0290.02113.20
5.4.430.0160.01713.15
5.4.420.0080.02113.26
5.4.410.0100.02313.20
5.4.400.0110.01513.18
5.4.390.0140.01413.15
5.4.380.0120.02112.99
5.4.370.0110.01812.95
5.4.360.0120.01712.99
5.4.350.0110.01813.03
5.4.340.0080.01813.04
5.4.330.0060.00411.18
5.4.320.0110.01712.98
5.4.310.0130.01413.02
5.4.300.0120.01813.02
5.4.290.0130.01913.03
5.4.280.0120.02012.98
5.4.270.0190.01712.98
5.4.260.0110.01512.97
5.4.250.0110.01513.00
5.4.240.0090.01913.04
5.4.230.0120.01413.02
5.4.220.0090.01613.02
5.4.210.0090.01813.02
5.4.200.0080.02212.53
5.4.190.0120.01713.02
5.4.180.0100.01712.97
5.4.170.0130.01712.97
5.4.160.0080.02013.03
5.4.150.0090.01813.03
5.4.140.0100.01712.41
5.4.130.0080.01712.44
5.4.120.0110.01612.46
5.4.110.0110.01512.38
5.4.100.0080.01812.40
5.4.90.0080.01912.43
5.4.80.0090.01612.42
5.4.70.0090.01612.38
5.4.60.0110.01612.42
5.4.50.0070.01912.39
5.4.40.0080.01712.41
5.4.30.0090.01712.37
5.4.20.0130.01312.41
5.4.10.0100.01512.43
5.4.00.0100.01612.31
5.3.290.0100.02512.41
5.3.280.0110.02512.38
5.3.270.0110.02312.36
5.3.260.0100.02612.39
5.3.250.0150.01712.36
5.3.240.0130.01812.42
5.3.230.0110.01912.42
5.3.220.0130.02012.34
5.3.210.0140.01712.38
5.3.200.0070.02312.40
5.3.190.0080.02112.38
5.3.180.0100.02312.37
5.3.170.0110.02112.34
5.3.160.0130.02112.35
5.3.150.0090.02212.35
5.3.140.0150.01712.39
5.3.130.0080.02312.38
5.3.120.0150.02012.40
5.3.110.0120.01912.34
5.3.100.0070.02312.17
5.3.90.0140.01912.18
5.3.80.0120.02412.17
5.3.70.0120.02012.15
5.3.60.0100.02312.17
5.3.50.0120.01912.17
5.3.40.0060.02712.17
5.3.30.0110.02012.13
5.3.20.0120.02112.10
5.3.10.0110.01812.11
5.3.00.0090.02112.07
5.2.170.0130.01411.23
5.2.160.0110.01411.20
5.2.150.0070.01811.27
5.2.140.0090.01611.24
5.2.130.0050.01911.20
5.2.120.0100.01411.21
5.2.110.0070.01811.17
5.2.100.0110.01811.23
5.2.90.0090.01811.22
5.2.80.0080.01711.20
5.2.70.0090.01611.18
5.2.60.0060.01811.20
5.2.50.0090.01611.20
5.2.40.0080.01611.19
5.2.30.0100.01411.18
5.2.20.0070.01711.14
5.2.10.0090.01611.14
5.2.00.0100.01511.07
5.1.60.0080.01510.85
5.1.50.0090.01510.85
5.1.40.0060.01410.85
5.1.30.0070.01510.96
5.1.20.0070.01810.95
5.1.10.0090.01210.84
5.1.00.0040.01810.85
5.0.50.0050.01110.39
5.0.40.0060.01210.35
5.0.30.0060.01910.22
5.0.20.0080.00710.23
5.0.10.0050.01110.24
5.0.00.0090.01310.23
4.4.90.0060.0079.86
4.4.80.0070.0059.86
4.4.70.0030.0109.86
4.4.60.0030.0109.86
4.4.50.0050.0099.86
4.4.40.0040.0149.86
4.4.30.0030.0109.86
4.4.20.0040.0099.86
4.4.10.0040.0109.86
4.4.00.0030.0169.86
4.3.110.0040.0109.86
4.3.100.0040.0099.86
4.3.90.0040.0109.86
4.3.80.0020.0179.86
4.3.70.0050.0109.86
4.3.60.0040.0099.86
4.3.50.0060.0089.86
4.3.40.0050.0139.86
4.3.30.0040.0099.86
4.3.20.0010.0119.86
4.3.10.0050.0089.86
4.3.00.0030.00910.03

preferences:
46.05 ms | 400 KiB | 5 Q