3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input = "the number of letters in mississippi = 12"; $i=0; $cp = $input; while( !(ctype_digit($cp[$i++]) ) ) ; echo $cp[--$i],$cp[$i],"\n";

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)
8.3.60.0140.00718.31
8.3.50.0050.01321.08
8.3.40.0070.00718.80
8.3.30.0140.00420.28
8.3.20.0040.00420.21
8.3.10.0080.00021.17
8.3.00.0050.00222.34
8.2.180.0110.00416.75
8.2.170.0040.01122.96
8.2.160.0140.00021.99
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0000.00820.89
8.2.110.0090.00019.11
8.2.100.0070.00317.91
8.2.90.0000.00919.17
8.2.80.0040.00418.05
8.2.70.0000.00817.50
8.2.60.0000.00817.80
8.2.50.0060.00318.07
8.2.40.0060.00318.21
8.2.30.0030.00519.44
8.2.20.0000.00717.70
8.2.10.0040.00417.67
8.2.00.0070.00017.64
8.1.280.0070.00725.92
8.1.270.0080.00023.99
8.1.260.0040.00426.35
8.1.250.0080.00628.09
8.1.240.0060.00322.59
8.1.230.0080.00320.97
8.1.220.0000.00818.77
8.1.210.0030.00620.70
8.1.200.0030.00617.38
8.1.190.0030.00517.54
8.1.180.0040.00418.10
8.1.170.0060.00318.59
8.1.160.0000.00718.81
8.1.150.0080.00018.68
8.1.140.0020.00517.52
8.1.130.0030.00317.74
8.1.120.0050.00517.38
8.1.110.0000.00717.30
8.1.100.0000.00717.51
8.1.90.0040.00317.46
8.1.80.0000.00717.47
8.1.70.0070.00017.41
8.1.60.0000.00817.55
8.1.50.0050.00317.39
8.1.40.0030.00617.50
8.1.30.0040.00417.52
8.1.20.0060.00317.65
8.1.10.0020.00517.56
8.1.00.0030.00517.44
8.0.300.0030.00319.89
8.0.290.0000.00717.16
8.0.280.0030.00318.35
8.0.270.0070.00017.13
8.0.260.0050.00216.83
8.0.250.0000.00816.89
8.0.240.0000.00716.84
8.0.230.0000.00716.93
8.0.220.0070.00016.93
8.0.210.0000.00816.79
8.0.200.0030.00316.96
8.0.190.0020.00516.94
8.0.180.0000.00716.86
8.0.170.0050.00316.84
8.0.160.0000.00716.77
8.0.150.0050.00216.75
8.0.140.0070.00016.94
8.0.130.0000.01013.33
8.0.120.0040.00416.93
8.0.110.0040.00416.79
8.0.100.0040.00416.88
8.0.90.0050.00316.95
8.0.80.0100.00716.81
8.0.70.0000.00716.78
8.0.60.0000.00716.95
8.0.50.0000.00716.71
8.0.30.0090.01217.08
8.0.20.0080.01117.40
8.0.10.0040.00416.89
8.0.00.0090.00816.79
7.4.330.0050.00016.69
7.4.320.0030.00316.52
7.4.300.0000.00716.50
7.4.290.0030.00316.51
7.4.280.0070.00016.62
7.4.270.0030.00316.59
7.4.260.0000.00513.25
7.4.250.0040.00416.54
7.4.240.0040.00416.41
7.4.230.0000.00716.41
7.4.220.0160.00316.59
7.4.210.0080.00716.51
7.4.200.0000.00716.63
7.4.190.0040.00416.40
7.4.160.0030.01216.46
7.4.150.0090.00917.40
7.4.140.0080.00817.86
7.4.130.0110.00916.56
7.4.120.0110.00616.58
7.4.110.0070.01016.55
7.4.100.0130.01016.53
7.4.90.0060.00916.39
7.4.80.0140.00719.39
7.4.70.0090.00616.36
7.4.60.0100.00716.53
7.4.50.0060.00316.64
7.4.40.0090.00622.77
7.4.30.0080.00816.41
7.4.10.0100.00714.95
7.4.00.0090.00714.80
7.3.330.0000.00513.03
7.3.320.0000.00713.20
7.3.310.0060.00316.47
7.3.300.0000.00616.29
7.3.290.0000.01416.30
7.3.280.0090.00716.24
7.3.270.0140.00417.40
7.3.260.0090.01018.24
7.3.250.0020.01416.34
7.3.240.0090.00916.31
7.3.230.0030.01316.39
7.3.210.0130.00316.30
7.3.200.0130.00719.39
7.3.190.0090.00916.22
7.3.180.0090.00616.25
7.3.170.0090.00616.57
7.3.160.0130.00316.55
7.3.130.0030.01614.95
7.3.120.0070.01114.78
7.3.110.0070.01315.05
7.3.100.0030.01015.04
7.3.90.0090.00615.00
7.3.80.0080.00414.77
7.3.70.0030.00714.62
7.3.60.0110.00314.93
7.3.50.0060.00914.41
7.3.40.0030.00614.48
7.3.30.0070.00414.79
7.3.20.0040.00716.55
7.3.10.0030.00716.63
7.3.00.0070.00316.66
7.2.330.0110.00816.30
7.2.320.0100.01016.76
7.2.310.0100.01516.69
7.2.300.0070.01016.32
7.2.290.0060.01016.70
7.2.260.0060.00915.16
7.2.250.0070.01114.76
7.2.240.0130.00014.95
7.2.230.0100.00714.78
7.2.220.0070.01015.24
7.2.210.0070.00714.95
7.2.200.0060.00614.89
7.2.190.0030.01315.10
7.2.180.0030.00615.13
7.2.170.0030.00615.11
7.2.160.0000.01714.77
7.2.150.0060.00616.79
7.2.140.0120.00017.02
7.2.130.0060.00316.70
7.2.120.0060.00716.93
7.2.110.0060.00617.04
7.2.100.0030.01016.95
7.2.90.0030.01216.90
7.2.80.0090.00616.92
7.2.70.0130.00016.67
7.2.60.0000.00916.86
7.2.50.0040.01216.85
7.2.40.0090.00016.97
7.2.30.0130.00016.93
7.2.20.0090.00616.99
7.2.10.0000.01017.00
7.2.00.0060.00916.72
7.1.330.0070.00715.83
7.1.320.0000.01015.88
7.1.310.0070.00315.45
7.1.300.0070.00715.75
7.1.290.0030.00615.82
7.1.280.0080.00315.52
7.1.270.0130.00315.63
7.1.260.0000.01115.99
7.1.250.0030.01015.87
7.1.240.0060.00615.88
7.1.230.0080.00515.89
7.1.220.0090.00315.54
7.1.210.0060.01215.88
7.1.200.0040.00415.88
7.1.190.0040.01115.46
7.1.180.0040.00715.75
7.1.170.0070.00415.73
7.1.160.0060.00316.00
7.1.150.0080.00415.63
7.1.140.0100.00315.91
7.1.130.0070.00715.67
7.1.120.0000.01415.82
7.1.110.0000.01215.78
7.1.100.0100.00315.99
7.1.90.0100.00315.96
7.1.80.0070.00315.68
7.1.70.0140.01016.53
7.1.60.0110.00517.52
7.1.50.0060.00916.42
7.1.40.0130.00315.91
7.1.30.0070.00715.75
7.1.20.0090.00615.73
7.1.10.0070.00715.66
7.1.00.0040.01919.13
7.0.330.0000.00915.36
7.0.320.0030.00615.23
7.0.310.0000.01415.51
7.0.300.0070.00715.40
7.0.290.0030.00615.47
7.0.280.0040.00715.59
7.0.270.0000.01115.35
7.0.260.0000.01415.52
7.0.250.0030.01015.37
7.0.240.0000.01215.53
7.0.230.0030.00615.52
7.0.220.0030.00615.25
7.0.210.0060.00615.41
7.0.200.0020.00816.03
7.0.190.0100.00315.45
7.0.180.0080.00315.47
7.0.170.0070.00715.37
7.0.160.0060.00615.62
7.0.150.0040.00415.32
7.0.140.0070.03818.61
7.0.130.0000.01215.42
7.0.120.0080.00415.25
7.0.110.0070.00715.56
7.0.100.0120.02717.69
7.0.90.0000.04817.79
7.0.80.0080.04317.58
7.0.70.0040.02617.74
7.0.60.0180.03217.62
7.0.50.0050.04517.86
7.0.40.0060.03016.65
7.0.30.0100.03516.79
7.0.20.0050.05116.83
7.0.10.0090.04016.78
7.0.00.0070.03416.82
5.6.400.0130.00014.48
5.6.390.0030.00714.40
5.6.380.0030.01214.25
5.6.370.0080.00314.61
5.6.360.0030.00714.13
5.6.350.0030.01014.51
5.6.340.0070.00314.62
5.6.330.0030.00614.27
5.6.320.0040.01114.39
5.6.310.0000.01014.62
5.6.300.0030.01014.41
5.6.290.0090.00014.31
5.6.280.0100.03517.76
5.6.270.0040.00914.41
5.6.260.0040.01114.69
5.6.250.0070.03517.53
5.6.240.0070.03317.43
5.6.230.0080.04217.48
5.6.220.0110.03617.39
5.6.210.0080.02817.57
5.6.200.0100.04317.83
5.6.190.0030.04517.76
5.6.180.0090.04417.61
5.6.170.0080.04017.87
5.6.160.0050.04817.59
5.6.150.0100.04017.58
5.6.140.0040.03117.54
5.6.130.0070.03517.72
5.6.120.0070.02517.77
5.6.110.0020.02717.76
5.6.100.0050.02317.65
5.6.90.0100.02317.61
5.6.80.0070.02317.29
5.6.70.0050.02817.26
5.6.60.0050.04317.35
5.6.50.0060.02117.26
5.6.40.0060.03117.27
5.6.30.0050.03517.20
5.6.20.0030.02217.26
5.6.10.0020.02617.21
5.6.00.0050.02317.30
5.5.380.0090.04517.39
5.5.370.0060.04317.34
5.5.360.0080.04317.37
5.5.350.0000.05317.45
5.5.340.0070.04117.68
5.5.330.0050.04017.61
5.5.320.0060.04117.52
5.5.310.0080.04317.74
5.5.300.0020.04517.74
5.5.290.0100.02217.59
5.5.280.0020.02917.54
5.5.270.0070.02217.56
5.5.260.0020.03017.54
5.5.250.0030.02917.25
5.5.240.0070.02817.09
5.5.230.0060.02317.14
5.5.220.0080.01617.23
5.5.210.0030.04517.28
5.5.200.0070.03317.12
5.5.190.0050.04317.25
5.5.180.0090.02917.18
5.5.170.0060.00914.11
5.5.160.0090.02117.22
5.5.150.0050.03617.14
5.5.140.0050.02717.44
5.5.130.0050.02417.20
5.5.120.0030.02717.27
5.5.110.0060.02117.19
5.5.100.0020.02817.08
5.5.90.0050.02217.14
5.5.80.0070.02217.26
5.5.70.0050.02217.20
5.5.60.0050.02517.12
5.5.50.0100.01917.16
5.5.40.0060.02216.92
5.5.30.0050.02017.11
5.5.20.0070.02216.96
5.5.10.0080.02317.14
5.5.00.0040.02717.00
5.4.450.0040.02515.21
5.4.440.0060.02115.29
5.4.430.0030.02415.21
5.4.420.0050.02015.12
5.4.410.0050.02215.20
5.4.400.0000.02715.05
5.4.390.0030.02215.09
5.4.380.0080.04015.11
5.4.370.0070.01715.10
5.4.360.0070.02015.05
5.4.350.0000.02315.01
5.4.340.0050.04115.11
5.4.330.0060.00611.13
5.4.320.0020.02815.01
5.4.310.0040.02015.11
5.4.300.0020.02515.08
5.4.290.0000.02515.08
5.4.280.0030.02415.07
5.4.270.0010.02115.08
5.4.260.0030.02115.09
5.4.250.0070.02015.08
5.4.240.0020.02315.18
5.4.230.0020.02615.19
5.4.220.0020.02415.18
5.4.210.0030.02215.13
5.4.200.0040.01715.13
5.4.190.0020.02215.13
5.4.180.0040.02115.17
5.4.170.0020.02315.05
5.4.160.0000.02115.02
5.4.150.0070.02715.11
5.4.140.0040.03613.72
5.4.130.0060.03813.71
5.4.120.0100.03313.75
5.4.110.0050.03213.69
5.4.100.0020.04013.70
5.4.90.0030.03513.80
5.4.80.0050.02313.76
5.4.70.0030.03513.72
5.4.60.0050.02313.77
5.4.50.0120.03013.68
5.4.40.0050.04013.73
5.4.30.0070.03713.65
5.4.20.0030.02813.74
5.4.10.0050.03013.75
5.4.00.0080.04013.42
5.3.290.0050.02112.87
5.3.280.0030.02012.79
5.3.270.0020.02112.86
5.3.260.0050.01512.86
5.3.250.0020.02212.82
5.3.240.0100.03012.79
5.3.230.0080.02712.86
5.3.220.0080.03212.84
5.3.210.0030.02512.77
5.3.200.0020.02712.80
5.3.190.0060.03612.84
5.3.180.0050.03912.83
5.3.170.0050.03812.81
5.3.160.0030.03712.82
5.3.150.0100.03512.84
5.3.140.0100.02712.84
5.3.130.0080.02312.80
5.3.120.0030.04212.76
5.3.110.0040.04112.83
5.3.100.0050.03812.57
5.3.90.0020.04312.57
5.3.80.0080.03712.50
5.3.70.0080.03712.52
5.3.60.0030.02812.52
5.3.50.0000.02712.51
5.3.40.0050.02212.47
5.3.30.0030.03812.47
5.3.20.0080.03512.35
5.3.10.0070.02412.38
5.3.00.0060.03812.27
5.2.170.0100.06011.17
5.2.160.0070.03011.00
5.2.150.0030.05711.13
5.2.140.0000.06711.14
5.2.130.0070.06011.09
5.2.120.0030.04711.15
5.2.110.0070.06010.95
5.2.100.0070.06011.02
5.2.90.0030.06310.93
5.2.80.0100.07011.07
5.2.70.0070.03011.09
5.2.60.0030.06311.08
5.2.50.0100.06010.88
5.2.40.0030.03310.91
5.2.30.0100.05710.94
5.2.20.0030.05311.00
5.2.10.0070.05010.91
5.2.00.0030.06010.78
5.1.60.0000.05010.04
5.1.50.0100.04710.01
5.1.40.0000.0409.99
5.1.30.0070.04310.39
5.1.20.0030.05310.28
5.1.10.0030.05010.05
5.1.00.0030.05310.11
5.0.50.0000.0409.94
5.0.40.0100.0379.94
5.0.30.0000.0379.94
5.0.20.0070.0479.94
5.0.10.0000.0379.94
5.0.00.0070.0609.94
4.4.90.0070.0309.94
4.4.80.0030.0379.94
4.4.70.0000.0209.94
4.4.60.0070.0179.94
4.4.50.0000.0379.94
4.4.40.0000.0509.94
4.4.30.0070.0309.94
4.4.20.0070.0309.94
4.4.10.0000.0379.94
4.4.00.0000.0579.94
4.3.110.0100.0279.94
4.3.100.0030.0339.94
4.3.90.0000.0279.94
4.3.80.0030.0509.94
4.3.70.0000.0239.94
4.3.60.0000.0209.94
4.3.50.0070.0279.94
4.3.40.0100.0439.94
4.3.30.0100.0279.94
4.3.20.0000.0379.94
4.3.10.0000.0379.94
4.3.00.0070.0309.94

preferences:
66.77 ms | 401 KiB | 5 Q