3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = null; var_dump(strtolower($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)
8.3.40.0150.00018.70
8.3.30.0160.00618.63
8.3.20.0040.00418.66
8.3.10.0040.00420.95
8.3.00.0050.00518.89
8.2.170.0070.00722.96
8.2.160.0110.00420.39
8.2.150.0000.00824.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0040.00420.97
8.2.110.0030.00620.51
8.2.100.0060.00617.91
8.2.90.0040.00419.05
8.2.80.0030.00617.97
8.2.70.0000.00917.63
8.2.60.0000.00917.93
8.2.50.0060.00318.07
8.2.40.0050.00317.99
8.2.30.0000.00821.22
8.2.20.0040.00417.55
8.2.10.0020.00517.67
8.2.00.0030.00517.72
8.1.270.0000.00723.99
8.1.260.0090.00626.35
8.1.250.0040.00428.09
8.1.240.0040.00423.88
8.1.230.0080.00320.88
8.1.220.0040.00418.77
8.1.210.0040.00418.85
8.1.200.0060.00317.23
8.1.190.0020.00517.53
8.1.180.0000.00718.10
8.1.170.0040.00418.59
8.1.160.0030.00518.87
8.1.150.0050.00218.63
8.1.140.0000.00717.41
8.1.130.0000.00717.77
8.1.120.0040.00417.45
8.1.110.0040.00417.27
8.1.100.0040.00417.34
8.1.90.0040.00417.40
8.1.80.0000.00717.38
8.1.70.0060.00317.35
8.1.60.0030.00617.51
8.1.50.0000.00717.48
8.1.40.0040.00417.43
8.1.30.0000.00717.50
8.1.20.0000.00817.41
8.1.10.0000.01017.46
8.1.00.0040.00417.34
8.0.300.0050.00319.73
8.0.290.0040.00417.18
8.0.280.0040.00418.36
8.0.270.0030.00317.09
8.0.260.0000.00616.63
8.0.250.0040.00416.78
8.0.240.0000.00716.91
8.0.230.0030.00316.79
8.0.220.0030.00316.73
8.0.210.0000.00716.85
8.0.200.0030.00316.79
8.0.190.0070.00016.93
8.0.180.0040.00416.80
8.0.170.0040.00416.86
8.0.160.0000.00716.68
8.0.150.0030.00316.66
8.0.140.0040.00416.63
8.0.130.0050.00013.29
8.0.120.0040.00416.75
8.0.110.0050.00316.88
8.0.100.0070.00016.63
8.0.90.0000.00716.73
8.0.80.0060.00916.81
8.0.70.0000.00816.62
8.0.60.0050.00216.78
8.0.50.0000.00716.70
8.0.30.0080.01117.05
8.0.20.0120.00717.40
8.0.10.0000.00716.93
8.0.00.0060.01416.81
7.4.330.0050.00016.84
7.4.320.0000.00616.49
7.4.300.0060.00016.50
7.4.290.0030.00316.44
7.4.280.0060.00016.43
7.4.270.0000.00616.45
7.4.260.0030.00313.22
7.4.250.0000.00816.49
7.4.240.0070.00016.43
7.4.230.0050.00316.25
7.4.220.0150.00416.27
7.4.210.0070.00816.48
7.4.200.0000.00716.56
7.4.190.0030.00316.38
7.4.160.0110.00616.27
7.4.150.0070.01617.40
7.4.140.0090.01117.86
7.4.130.0090.01216.40
7.4.120.0090.00916.53
7.4.110.0100.00916.20
7.4.100.0100.00616.37
7.4.90.0060.01216.38
7.4.80.0160.00319.39
7.4.70.0100.00716.24
7.4.60.0100.00716.36
7.4.50.0050.00316.31
7.4.40.0070.00722.77
7.4.30.0070.01316.50
7.4.20.0070.01016.24
7.4.10.0090.00715.53
7.4.00.0070.00815.26
7.3.330.0070.00013.00
7.3.320.0030.00312.87
7.3.310.0000.00615.97
7.3.300.0000.00716.08
7.3.290.0030.01016.07
7.3.280.0090.01016.16
7.3.270.0060.01017.40
7.3.260.0150.01218.24
7.3.250.0080.00916.22
7.3.240.0090.00916.23
7.3.230.0060.01016.39
7.3.210.0100.00616.28
7.3.200.0100.00719.39
7.3.190.0030.01416.30
7.3.180.0030.01716.45
7.3.170.0130.00316.27
7.3.160.0120.01216.17
7.3.140.0030.01416.32
7.3.130.0070.01015.34
7.3.120.0030.01215.18
7.3.110.0050.01115.57
7.3.100.0070.00815.40
7.3.90.0050.01115.35
7.3.80.0080.00815.33
7.3.70.0140.00315.44
7.3.60.0060.00915.38
7.3.50.0010.01115.28
7.3.40.0050.01215.26
7.3.30.0060.01015.34
7.3.20.0080.00616.15
7.3.10.0040.00916.46
7.3.00.0100.00516.37
7.2.330.0070.01116.39
7.2.320.0090.00916.49
7.2.310.0040.01416.32
7.2.300.0030.01316.50
7.2.290.0070.01016.61
7.2.270.0060.00916.18
7.2.260.0060.01115.38
7.2.250.0050.01215.66
7.2.240.0090.00815.43
7.2.230.0080.00715.63
7.2.220.0060.01215.50
7.2.210.0080.00815.70
7.2.200.0050.01115.52
7.2.190.0100.00515.54
7.2.180.0130.00815.61
7.2.170.0050.01115.50
7.2.160.0050.01015.51
7.2.150.0080.00816.47
7.2.140.0020.01316.45
7.2.130.0030.01216.49
7.2.120.0150.00915.95
7.2.110.0120.01115.76
7.2.100.0150.00715.90
7.2.90.0250.00515.87
7.2.80.0160.00615.88
7.2.70.0140.01015.79
7.2.60.0140.00815.75
7.2.50.0190.00916.00
7.2.40.0120.00816.05
7.2.30.0100.00915.99
7.2.20.0150.01015.97
7.2.10.0200.00715.84
7.2.00.0140.01016.76
7.1.330.0100.00715.36
7.1.320.0060.01515.53
7.1.310.0110.00615.50
7.1.300.0080.00415.39
7.1.290.0140.00315.29
7.1.280.0090.00315.47
7.1.270.0050.00915.41
7.1.260.0050.00915.43
7.1.250.0100.00515.40
7.1.240.0160.01114.90
7.1.230.0130.00714.91
7.1.220.0080.01014.73
7.1.210.0220.00514.66
7.1.200.0130.00814.90
7.1.190.0130.00714.96
7.1.180.0130.00614.76
7.1.170.0180.00914.92
7.1.160.0200.00714.88
7.1.150.0170.00614.78
7.1.140.0300.00614.81
7.1.130.0160.01114.82
7.1.120.0160.00414.76
7.1.110.0150.01214.78
7.1.100.0100.00615.66
7.1.90.0310.01114.90
7.1.80.0200.00814.94
7.1.70.0130.00915.32
7.1.60.0130.00915.47
7.1.50.0210.00815.23
7.1.40.0150.00914.69
7.1.30.0180.00814.93
7.1.20.0140.00714.71
7.1.10.0090.01014.79
7.1.00.0120.02016.74
7.0.330.0100.00515.01
7.0.320.0180.00314.46
7.0.310.0190.00814.35
7.0.300.0220.00814.44
7.0.290.0180.00714.54
7.0.280.0140.00714.48
7.0.270.0200.01014.52
7.0.260.0130.01114.51
7.0.250.0160.00514.64
7.0.240.0070.01114.67
7.0.230.0190.00714.44
7.0.220.0210.00514.50
7.0.210.0150.00814.44
7.0.200.0120.01014.83
7.0.190.0180.00514.63
7.0.180.0140.00714.59
7.0.170.0080.00914.42
7.0.160.0180.00814.51
7.0.150.0180.00914.65
7.0.140.0120.02616.45
7.0.130.0170.00714.75
7.0.120.0180.00714.55
7.0.110.0200.00614.48
7.0.100.0180.02815.92
7.0.90.0280.02415.91
7.0.80.0160.02115.84
7.0.70.0190.02415.86
7.0.60.0180.02215.79
7.0.50.0150.01915.95
7.0.40.0140.02815.47
7.0.30.0140.02515.47
7.0.20.0130.01915.34
7.0.10.0170.02715.45
7.0.00.0170.02615.47
5.6.400.0020.01414.79
5.6.390.0090.01014.91
5.6.380.0060.00914.61
5.6.370.0110.01114.49
5.6.360.0070.00914.48
5.6.350.0070.01214.63
5.6.340.0130.00414.31
5.6.330.0110.00814.68
5.6.320.0110.00514.51
5.6.310.0090.00514.43
5.6.300.0160.00614.63
5.6.290.0070.01114.53
5.6.280.0080.02616.07
5.6.270.0060.01314.73
5.6.260.0110.00614.47
5.6.250.0130.02316.05
5.6.240.0070.02016.09
5.6.230.0080.02816.09
5.6.220.0080.02016.13
5.6.210.0080.02216.09
5.6.200.0090.02416.08
5.6.190.0120.02316.22
5.6.180.0060.03216.15
5.6.170.0100.02316.10
5.6.160.0110.01716.12
5.6.150.0050.01816.18
5.6.140.0080.02116.26
5.6.130.0130.01616.11
5.6.120.0030.03516.11
5.6.110.0070.02816.15
5.6.100.0120.02516.21
5.6.90.0100.02416.10
5.6.80.0120.01716.04
5.6.70.0070.01815.88
5.6.60.0060.02715.89
5.6.50.0110.02215.94
5.6.40.0070.02915.92
5.6.30.0080.02215.87
5.6.20.0100.02615.88
5.6.10.0080.02715.93
5.6.00.0090.02616.01
5.5.380.0110.02515.50
5.5.370.0120.02915.55
5.5.360.0080.02315.58
5.5.350.0110.03415.44
5.5.340.0100.03015.74
5.5.330.0120.03115.68
5.5.320.0080.02815.74
5.5.310.0080.04115.71
5.5.300.0060.03415.72
5.5.290.0100.03415.54
5.5.280.0110.02215.72
5.5.270.0100.03015.79
5.5.260.0120.02515.60
5.5.250.0130.03015.69
5.5.240.0130.02315.57
5.5.230.0100.03115.46
5.5.220.0110.03015.40
5.5.210.0130.02215.55
5.5.200.0100.02915.46
5.5.190.0080.03715.43
5.5.180.0090.03515.53
5.5.170.0160.00814.98
5.5.160.0150.02615.62
5.5.150.0090.03215.58
5.5.140.0130.02815.51
5.5.130.0100.03415.53
5.5.120.0150.02815.59
5.5.110.0060.02515.63
5.5.100.0110.02515.47
5.5.90.0130.01915.46
5.5.80.0120.03115.34
5.5.70.0100.02515.52
5.5.60.0100.01915.42
5.5.50.0140.03015.40
5.5.40.0080.02515.48
5.5.30.0110.02815.47
5.5.20.0100.01915.47
5.5.10.0120.02915.49
5.5.00.0080.03415.36
5.4.450.0100.02514.11
5.4.440.0100.03414.28
5.4.430.0090.03114.28
5.4.420.0070.02914.06
5.4.410.0080.02614.12
5.4.400.0080.02713.97
5.4.390.0090.02114.00
5.4.380.0110.02214.02
5.4.370.0070.02813.97
5.4.360.0090.01914.07
5.4.350.0100.03014.06
5.4.340.0120.02414.09
5.4.330.0130.00511.61
5.4.320.0120.02414.20
5.4.310.0120.01913.98
5.4.300.0090.01914.04
5.4.290.0100.02814.09
5.4.280.0140.02414.08
5.4.270.0090.02514.11
5.4.260.0090.02614.15
5.4.250.0170.02414.11
5.4.240.0110.02214.13
5.4.230.0160.01713.95
5.4.220.0100.02914.02
5.4.210.0110.01814.19
5.4.200.0140.02214.01
5.4.190.0110.02514.02
5.4.180.0120.01513.95
5.4.170.0090.03114.04
5.4.160.0130.02214.07
5.4.150.0110.02513.97
5.4.140.0080.02013.22
5.4.130.0110.02113.18
5.4.120.0130.02613.21
5.4.110.0040.02813.04
5.4.100.0080.03013.31
5.4.90.0100.03013.12
5.4.80.0070.02313.10
5.4.70.0060.01913.08
5.4.60.0110.01613.19
5.4.50.0100.02713.23
5.4.40.0100.02313.23
5.4.30.0100.01713.14
5.4.20.0090.01713.20
5.4.10.0060.02013.11
5.4.00.0070.02812.94
5.3.290.0100.02912.63
5.3.280.0090.01812.49
5.3.270.0080.02512.59
5.3.260.0090.02912.51
5.3.250.0100.02212.62
5.3.240.0100.02812.49
5.3.230.0090.02012.56
5.3.220.0090.02012.53
5.3.210.0110.02512.54
5.3.200.0090.02112.55
5.3.190.0090.03012.52
5.3.180.0100.02512.64
5.3.170.0080.02312.55
5.3.160.0120.02812.65
5.3.150.0080.03012.60
5.3.140.0070.02812.63
5.3.130.0020.02112.57
5.3.120.0100.02712.59
5.3.110.0080.02112.63
5.3.100.0070.02512.42
5.3.90.0090.01412.38
5.3.80.0070.03312.26
5.3.70.0070.02512.29
5.3.60.0080.02912.38
5.3.50.0080.02312.25
5.3.40.0060.01912.33
5.3.30.0040.03012.30
5.3.20.0060.02912.18
5.3.10.0040.02112.02
5.3.00.0060.03312.11
5.2.170.0020.02210.20
5.2.160.0040.02910.23
5.2.150.0060.03210.29
5.2.140.0050.03310.18
5.2.130.0050.01810.03
5.2.120.0140.01910.28
5.2.110.0060.01510.32
5.2.100.0110.03010.27
5.2.90.0070.03110.15
5.2.80.0030.03310.17
5.2.70.0070.03210.16
5.2.60.0080.02310.06
5.2.50.0080.03010.03
5.2.40.0040.03410.15
5.2.30.0060.0319.99
5.2.20.0050.03610.00
5.2.10.0050.03210.05
5.2.00.0060.0329.91
5.1.60.0060.0169.60
5.1.50.0040.0189.50
5.1.40.0080.0259.60
5.1.30.0070.0189.78
5.1.20.0070.0179.78
5.1.10.0060.0179.61
5.1.00.0070.0279.63
5.0.50.0050.0249.01
5.0.40.0060.0229.01
5.0.30.0060.0289.01
5.0.20.0070.0189.01
5.0.10.0020.0249.01
5.0.00.0060.0279.01
4.4.90.0040.0179.01
4.4.80.0040.0169.01
4.4.70.0040.0169.01
4.4.60.0050.0089.01
4.4.50.0050.0169.01
4.4.40.0020.0289.01
4.4.30.0050.0179.01
4.4.20.0060.0189.01
4.4.10.0030.0109.01
4.4.00.0030.0289.01
4.3.110.0040.0189.01
4.3.100.0050.0179.01
4.3.90.0070.0129.01
4.3.80.0060.0249.01
4.3.70.0030.0139.01
4.3.60.0010.0139.01
4.3.50.0040.0149.01
4.3.40.0030.0229.01
4.3.30.0000.0219.01
4.3.20.0010.0119.01
4.3.10.0020.0189.01
4.3.00.0010.0209.01

preferences:
43.03 ms | 400 KiB | 5 Q