3v4l.org

run code in 300+ PHP versions simultaneously
<?php $needle = 'Hello'; $replacement = 'hello'; echo ctype_upper($needle[0]); if (ctype_upper($needle[0])) { echo 'TRUE'; } echo $needle[0]; echo $replacement;

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)
8.3.60.0000.01518.18
8.3.50.0070.00921.98
8.3.40.0000.01418.71
8.3.30.0070.01419.17
8.3.20.0070.00020.29
8.3.10.0040.00423.61
8.3.00.0040.00420.89
8.2.180.0180.00018.54
8.2.170.0110.00422.96
8.2.160.0000.01420.52
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0070.01126.16
8.2.120.0000.00819.38
8.2.110.0060.00321.91
8.2.100.0070.00417.84
8.2.90.0030.00619.17
8.2.80.0040.00417.97
8.2.70.0090.00017.63
8.2.60.0040.00818.04
8.2.50.0000.00918.07
8.2.40.0040.00420.01
8.2.30.0030.00518.20
8.2.20.0000.00817.76
8.2.10.0040.00418.00
8.2.00.0040.00417.59
8.1.280.0040.01125.92
8.1.270.0080.00021.96
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0040.00423.98
8.1.230.0040.00819.03
8.1.220.0080.00017.74
8.1.210.0050.00318.77
8.1.200.0030.00817.23
8.1.190.0060.00317.22
8.1.180.0050.00318.10
8.1.170.0000.00818.46
8.1.160.0000.00821.95
8.1.150.0040.00418.50
8.1.140.0040.00417.42
8.1.130.0000.00719.53
8.1.120.0040.00417.33
8.1.110.0000.00717.28
8.1.100.0040.00417.45
8.1.90.0040.00417.38
8.1.80.0080.00017.41
8.1.70.0070.00017.41
8.1.60.0030.00917.51
8.1.50.0000.00817.36
8.1.40.0030.00617.40
8.1.30.0000.00817.60
8.1.20.0000.00817.60
8.1.10.0040.00417.62
8.1.00.0000.00717.41
8.0.300.0040.00418.77
8.0.290.0050.00316.75
8.0.280.0000.00718.49
8.0.270.0030.00317.16
8.0.260.0000.00617.26
8.0.250.0030.00316.95
8.0.240.0000.00816.95
8.0.230.0000.00616.93
8.0.220.0030.00316.86
8.0.210.0030.00316.74
8.0.200.0030.00316.88
8.0.190.0040.00416.94
8.0.180.0000.00716.82
8.0.170.0030.00516.91
8.0.160.0070.00016.83
8.0.150.0000.00716.76
8.0.140.0040.00416.66
8.0.130.0050.00013.21
8.0.120.0030.00616.82
8.0.110.0060.00316.69
8.0.100.0000.00816.77
8.0.90.0040.00416.82
8.0.80.0150.00616.80
8.0.70.0040.00416.90
8.0.60.0000.00716.75
8.0.50.0000.00716.79
8.0.30.0080.01016.93
8.0.20.0140.00517.40
8.0.10.0000.00816.79
8.0.00.0070.01116.80
7.4.330.0030.00315.01
7.4.320.0000.00616.37
7.4.300.0000.00616.59
7.4.290.0020.00516.54
7.4.280.0030.00616.55
7.4.270.0030.00416.47
7.4.260.0030.00316.42
7.4.250.0000.00716.46
7.4.240.0000.00716.48
7.4.230.0000.00716.62
7.4.220.0130.00716.53
7.4.210.0060.01016.53
7.4.200.0000.00716.36
7.4.160.0090.01216.51
7.4.150.0090.00917.40
7.4.140.0110.01017.86
7.4.130.0080.00916.52
7.4.120.0110.00516.46
7.4.110.0070.01016.59
7.4.100.0040.01816.36
7.4.90.0060.01016.41
7.4.80.0030.01519.39
7.4.70.0110.00616.53
7.4.60.0130.00316.40
7.4.50.0040.00416.25
7.4.40.0080.00816.40
7.4.30.0120.00316.39
7.4.00.0060.01114.81
7.3.330.0060.00013.03
7.3.320.0000.00513.16
7.3.310.0050.00216.22
7.3.300.0050.00316.05
7.3.290.0040.01116.32
7.3.280.0100.00816.28
7.3.270.0060.01217.40
7.3.260.0130.00716.38
7.3.250.0060.01116.49
7.3.240.0090.01116.45
7.3.230.0090.01216.39
7.3.210.0140.00416.59
7.3.200.0030.01619.39
7.3.190.0070.01416.53
7.3.180.0070.00716.33
7.3.170.0090.01216.34
7.3.160.0100.00616.32
7.3.120.0070.00914.72
7.3.110.0060.01114.71
7.3.100.0080.00914.74
7.3.90.0110.00514.76
7.3.80.0070.00714.70
7.3.70.0050.00914.73
7.3.60.0060.00914.70
7.3.50.0080.00514.77
7.3.40.0050.00614.80
7.3.30.0030.01014.97
7.3.20.0030.00816.72
7.3.10.0050.00916.56
7.3.00.0060.00716.67
7.2.330.0090.00916.31
7.2.320.0070.01016.30
7.2.310.0070.01016.53
7.2.300.0060.00916.41
7.2.290.0030.01416.61
7.2.250.0060.01214.63
7.2.240.0060.01214.97
7.2.230.0050.01215.04
7.2.220.0060.00815.04
7.2.210.0100.00614.78
7.2.200.0090.00214.96
7.2.190.0060.01114.86
7.2.180.0030.01014.99
7.2.170.0050.00814.99
7.2.160.0120.00314.65
7.2.150.0080.00416.96
7.2.140.0000.01316.97
7.2.130.0030.01016.74
7.2.120.0050.00916.71
7.2.110.0070.00516.84
7.2.100.0070.00316.79
7.2.90.0060.00616.79
7.2.80.0040.01016.92
7.2.70.0060.01116.72
7.2.60.0080.00416.84
7.2.50.0090.00916.78
7.2.40.0110.00516.71
7.2.30.0050.01016.96
7.2.20.0080.00716.93
7.2.10.0090.00516.86
7.2.00.0100.00416.81
7.1.330.0050.01015.74
7.1.320.0020.00915.92
7.1.310.0080.00715.86
7.1.300.0050.00515.65
7.1.290.0080.00515.67
7.1.280.0030.01015.85
7.1.270.0060.00715.88
7.1.260.0050.00615.81
7.1.250.0000.01415.82
7.1.240.0030.00615.80
7.1.230.0070.00315.77
7.1.220.0100.00015.64
7.1.210.0030.00915.52
7.1.200.0020.00915.71
7.1.190.0030.00915.83
7.1.180.0000.01615.83
7.1.170.0090.00915.71
7.1.160.0070.00715.58
7.1.150.0000.01315.73
7.1.140.0120.00315.98
7.1.130.0060.00915.83
7.1.120.0070.01015.50
7.1.110.0090.00315.57
7.1.100.0070.00715.76
7.1.90.0030.01315.98
7.1.80.0100.00315.51
7.1.70.0030.00816.38
7.1.60.0080.00817.77
7.1.50.0060.00616.40
7.1.40.0030.01015.76
7.1.30.0000.01515.62
7.1.20.0100.00015.57
7.1.10.0000.01315.93
7.1.00.0070.03819.04
7.0.330.0060.00615.48
7.0.320.0000.01315.39
7.0.310.0030.01015.41
7.0.300.0030.00915.45
7.0.290.0060.00615.32
7.0.280.0030.00615.45
7.0.270.0050.00515.21
7.0.260.0090.00615.16
7.0.250.0100.00715.43
7.0.240.0040.01115.39
7.0.230.0030.01015.11
7.0.220.0030.00915.51
7.0.210.0000.01015.55
7.0.200.0050.00416.08
7.0.190.0000.01015.14
7.0.180.0030.01015.37
7.0.170.0060.01015.64
7.0.160.0000.00915.40
7.0.150.0070.00715.44
7.0.140.0020.04518.74
7.0.130.0080.00815.30
7.0.120.0060.00315.51
7.0.110.0080.03117.66
7.0.100.0050.02817.64
7.0.90.0050.02517.80
7.0.80.0050.03017.67
7.0.70.0080.01817.72
7.0.60.0080.02017.66
7.0.50.0100.02317.78
7.0.40.0050.02816.66
7.0.30.0070.02316.67
7.0.20.0030.02816.49
7.0.10.0070.02516.63
7.0.00.0080.02216.52
5.6.400.0000.01114.21
5.6.390.0030.01314.37
5.6.380.0080.00614.29
5.6.370.0030.00714.48
5.6.360.0030.01514.49
5.6.350.0000.01414.55
5.6.340.0030.00914.30
5.6.330.0030.00914.12
5.6.320.0060.00614.64
5.6.310.0030.00714.05
5.6.300.0130.00014.34
5.6.290.0040.00814.34
5.6.280.0020.04417.84
5.6.270.0080.00014.43
5.6.260.0110.03217.48
5.6.250.0090.03017.38
5.6.240.0100.02017.49
5.6.230.0100.02517.36
5.6.220.0180.01617.54
5.6.210.0030.02517.42
5.6.200.0090.02817.31
5.6.190.0090.02017.42
5.6.180.0060.02517.45
5.6.170.0030.04517.40
5.6.160.0080.02117.48
5.6.150.0080.02317.54
5.6.140.0030.02617.44
5.6.130.0000.03017.43
5.6.120.0020.02817.38
5.6.110.0050.02417.44
5.6.100.0020.02717.48
5.6.90.0100.03317.46
5.6.80.0070.02816.95
5.6.70.0000.03117.13
5.6.60.0060.02617.07
5.6.50.0030.02317.03
5.6.40.0060.01917.26
5.6.30.0070.01917.19
5.6.20.0090.02317.18
5.6.10.0030.02717.04
5.6.00.0030.02517.12
5.5.380.0020.02615.98
5.5.370.0090.02315.86
5.5.360.0030.03015.95
5.5.350.0030.02615.93
5.5.340.0020.02316.01
5.5.330.0030.02716.20
5.5.320.0010.02916.10
5.5.310.0070.02316.28
5.5.300.0030.03116.27
5.5.290.0000.02916.13
5.5.280.0020.02816.05
5.5.270.0020.02616.05
5.5.260.0050.02516.15
5.5.250.0070.02216.03
5.5.240.0080.01815.77
5.5.230.0050.02315.68
5.5.220.0030.02415.63
5.5.210.0070.01515.60
5.5.200.0050.04515.66
5.5.190.0070.04215.54
5.5.180.0020.03515.76
5.5.170.0030.01013.91
5.5.160.0060.02115.83
5.5.150.0090.02215.69
5.5.140.0100.01815.64
5.5.130.0050.02015.89
5.5.120.0020.02515.72
5.5.110.0000.02115.76
5.5.100.0070.02315.63
5.5.90.0020.02515.66
5.5.80.0020.02015.70
5.5.70.0060.02415.61
5.5.60.0070.02215.72
5.5.50.0050.02415.88
5.5.40.0030.02315.57
5.5.30.0040.02315.55
5.5.20.0000.02715.47
5.5.10.0050.02215.48
5.5.00.0030.02115.56
5.4.450.0080.01915.21
5.4.440.0030.02115.09
5.4.430.0080.01915.22
5.4.420.0040.02515.26
5.4.410.0020.02414.97
5.4.400.0070.02214.84
5.4.390.0050.02815.08
5.4.380.0080.02115.09
5.4.370.0030.02215.02
5.4.360.0080.03314.97
5.4.350.0070.03514.99
5.4.340.0070.04114.87
5.4.330.0060.00310.82
5.4.320.0050.02514.98
5.4.310.0040.02514.85
5.4.300.0100.02214.94
5.4.290.0110.01314.88
5.4.280.0020.02714.91
5.4.270.0110.02014.95
5.4.260.0010.02614.92
5.4.250.0030.02014.97
5.4.240.0060.02514.92
5.4.230.0030.02314.85
5.4.220.0030.02114.98
5.4.210.0070.02314.82
5.4.200.0000.02314.95
5.4.190.0060.02015.04
5.4.180.0040.02014.87
5.4.170.0020.02814.89
5.4.160.0050.02014.92
5.4.150.0000.02915.06
5.4.140.0030.02313.78
5.4.130.0040.02413.67
5.4.120.0030.02013.61
5.4.110.0060.01913.53
5.4.100.0020.02313.50
5.4.90.0050.02113.59
5.4.80.0060.01813.60
5.4.70.0000.02313.59
5.4.60.0020.01913.59
5.4.50.0080.01313.48
5.4.40.0020.02013.46
5.4.30.0000.02113.53
5.4.20.0030.02013.80
5.4.10.0050.01713.68
5.4.00.0050.01813.30
5.3.290.0020.02212.68
5.3.280.0070.02112.58
5.3.270.0030.02312.59
5.3.260.0050.02212.61
5.3.250.0060.01712.60
5.3.240.0030.02012.62
5.3.230.0020.02212.61
5.3.220.0030.02112.60
5.3.210.0050.02012.56
5.3.200.0010.02112.63
5.3.190.0030.01812.66
5.3.180.0040.01912.58
5.3.170.0020.02212.63
5.3.160.0050.02312.63
5.3.150.0050.01812.56
5.3.140.0040.01812.66
5.3.130.0020.02212.57
5.3.120.0030.01912.65
5.3.110.0030.02012.59
5.3.100.0030.02112.31
5.3.90.0030.02112.29
5.3.80.0060.02412.30
5.3.70.0070.02812.32
5.3.60.0040.02012.27
5.3.50.0040.02512.36
5.3.40.0050.02212.35
5.3.30.0060.01512.27
5.3.20.0060.01812.08
5.3.10.0030.02312.22
5.3.00.0040.03112.14
5.2.170.0030.02311.09
5.2.160.0030.02711.07
5.2.150.0030.02711.03
5.2.140.0070.04711.16
5.2.130.0000.04011.04
5.2.120.0000.03011.12
5.2.110.0000.03010.89
5.2.100.0000.02711.25
5.2.90.0070.02711.00
5.2.80.0000.03010.88
5.2.70.0030.04011.03
5.2.60.0030.02311.00
5.2.50.0070.04710.91
5.2.40.0030.02311.04
5.2.30.0030.05310.91
5.2.20.0030.02710.84
5.2.10.0070.03310.89
5.2.00.0070.01710.79
5.1.60.0000.0439.95
5.1.50.0070.04310.14
5.1.40.0030.02310.21
5.1.30.0030.03010.32
5.1.20.0000.02310.36
5.1.10.0000.03010.23
5.1.00.0030.02010.05
5.0.50.0030.0179.15
5.0.40.0030.0179.15
5.0.30.0000.0279.15
5.0.20.0100.0109.15
5.0.10.0070.0139.15
5.0.00.0070.0439.15
4.4.90.0030.0139.15
4.4.80.0000.0179.15
4.4.70.0030.0239.15
4.4.60.0000.0209.15
4.4.50.0000.0179.15
4.4.40.0000.0279.15
4.4.30.0000.0139.15
4.4.20.0000.0209.15
4.4.10.0000.0179.15
4.4.00.0030.0209.15
4.3.110.0000.0139.15
4.3.100.0000.0309.15
4.3.90.0030.0109.15
4.3.80.0000.0209.15
4.3.70.0000.0239.15
4.3.60.0000.0179.15
4.3.50.0030.0279.15
4.3.40.0070.0379.15
4.3.30.0000.0179.15
4.3.20.0030.0379.15
4.3.10.0030.0379.15
4.3.00.0000.0379.15

preferences:
44.16 ms | 401 KiB | 5 Q