3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo ltrim('#+&!','#&!+'); $channel_name = '#someChannelName'; function isValidChannelName($name) { return preg_match('/#[\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0B\x0C\x0E\x0F\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2A\x2B\x2D\x2E\x2F\x30\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3B\x3C\x3D\x3E\x3F\x40\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4A\x4B\x4C\x4D\x4E\x4F\x50\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5A\x5B\x5C\x5D\x5E\x5F\x60\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6A\x6B\x6C\x6D\x6E\x6F\x70\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7A\x7B\x7C\x7D\x7E\x7F\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8A\x8B\x8C\x8D\x8E\x8F\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9A\x9B\x9C\x9D\x9E\x9F\xA0\xA1\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9\xAA\xAB\xAC\xAD\xAE\xAF\xB0\xB1\xB2\xB3\xB4\xB5\xB6\xB7\xB8\xB9\xBA\xBB\xBC\xBD\xBE\xBF\xC0\xC1\xC2\xC3\xC4\xC5\xC6\xC7\xC8\xC9\xCA\xCB\xCC\xCD\xCE\xCF\xD0\xD1\xD2\xD3\xD4\xD5\xD6\xD7\xD8\xD9\xDA\xDB\xDC\xDD\xDE\xDF\xE0\xE1\xE2\xE3\xE4\xE5\xE6\xE7\xE8\xE9\xEA\xEB\xEC\xED\xEE\xEF\xF0\xF1\xF2\xF3\xF4\xF5\xF6\xF7\xF8\xF9\xFA\xFB\xFC\xFD\xFE\xFF]+/',$name); } var_dump(isValidChannelName($channel_name));

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)
8.3.40.0090.00618.79
8.3.30.0070.01220.99
8.3.20.0110.00421.05
8.3.10.0060.00822.26
8.3.00.0080.00623.29
8.2.170.0090.00922.96
8.2.160.0130.00521.75
8.2.150.0070.00523.57
8.2.140.0090.00623.81
8.2.130.0080.00524.56
8.2.120.0060.00821.19
8.2.110.0080.00521.09
8.2.100.0110.00520.33
8.2.90.0090.00620.42
8.2.80.0090.00420.47
8.2.70.0060.00920.38
8.2.60.0040.01020.50
8.2.50.0090.00420.53
8.2.40.0090.00521.15
8.2.30.0060.00821.16
8.2.20.0070.00720.41
8.2.10.0060.01020.30
8.2.00.0050.00920.36
8.1.270.0060.00723.98
8.1.260.0100.00525.04
8.1.250.0110.00225.96
8.1.240.0100.00423.46
8.1.230.0050.00922.56
8.1.220.0090.00420.35
8.1.210.0070.00620.87
8.1.200.0070.00620.22
8.1.190.0080.00520.16
8.1.180.0080.00620.53
8.1.170.0050.00920.84
8.1.160.0040.00920.90
8.1.150.0100.00520.91
8.1.140.0080.00520.25
8.1.130.0070.00720.36
8.1.120.0100.00320.24
8.1.110.0120.00220.24
8.1.100.0060.00720.24
8.1.90.0090.00420.26
8.1.80.0020.00920.24
8.1.70.0070.00320.23
8.1.60.0060.00520.35
8.1.50.0020.00920.24
8.1.40.0070.00420.31
8.1.30.0070.00420.31
8.1.20.0060.00520.37
8.1.10.0090.00320.31
8.1.00.0040.00720.24
8.0.300.0030.00820.87
8.0.290.0100.00619.92
8.0.280.0130.00320.71
8.0.270.0050.00620.05
8.0.260.0090.00519.95
8.0.250.0070.00820.04
8.0.240.0120.00420.01
8.0.230.0110.00320.00
8.0.220.0060.00619.95
8.0.210.0140.00319.91
8.0.200.0120.00720.03
8.0.190.0170.00520.01
8.0.180.0090.00519.94
8.0.170.0120.00419.94
8.0.160.0000.01119.91
8.0.150.0100.00819.95
8.0.140.0140.00319.95
8.0.130.0140.00518.17
8.0.120.0110.00619.87
8.0.110.0150.00219.90
8.0.100.0150.00519.91
8.0.90.0160.00720.00
8.0.80.0210.00519.96
8.0.70.0050.00719.98
8.0.60.0100.00919.88
8.0.50.0150.00519.92
8.0.30.0070.01019.09
8.0.20.0080.01219.27
8.0.10.0120.00720.06
8.0.00.0140.00619.01
7.4.330.0170.00018.97
7.4.320.0170.00719.83
7.4.300.0210.00319.79
7.4.290.0230.00019.84
7.4.280.0120.00919.78
7.4.270.0150.00519.82
7.4.260.0090.00918.23
7.4.250.0160.00419.75
7.4.240.0210.00019.83
7.4.230.0150.00419.82
7.4.220.0150.01419.87
7.4.210.0100.01117.97
7.4.200.0130.01019.89
7.4.190.0160.00719.79
7.4.180.0260.00822.96
7.4.160.0170.00719.82
7.4.150.0210.01020.18
7.4.140.0150.01019.56
7.4.130.0190.00618.75
7.4.120.0150.01018.79
7.4.110.0250.00519.80
7.4.100.0200.01119.85
7.4.90.0270.00719.72
7.4.80.0140.01321.17
7.4.70.0110.01519.79
7.4.60.0180.00419.84
7.4.50.0160.00219.62
7.4.40.0130.00922.74
7.4.30.0230.00519.75
7.4.20.0220.00622.96
7.4.10.0180.01019.14
7.4.00.0140.01017.78
7.3.330.0130.00618.09
7.3.320.0200.00218.15
7.3.310.0210.00219.65
7.3.300.0200.00219.66
7.3.290.0170.01019.63
7.3.280.0150.00818.04
7.3.270.0180.01020.18
7.3.260.0190.00619.81
7.3.250.0220.00718.77
7.3.240.0190.01019.72
7.3.230.0200.00519.90
7.3.220.0270.01122.96
7.3.210.0180.00719.66
7.3.200.0180.00921.18
7.3.190.0130.01019.71
7.3.180.0180.00419.72
7.3.170.0140.00819.72
7.3.160.0110.01119.74
7.3.150.0300.00322.96
7.3.140.0230.00722.96
7.3.130.0200.00518.93
7.3.120.0150.00717.71
7.3.110.0190.00619.05
7.3.100.0180.00919.04
7.3.90.0180.01218.72
7.3.80.0180.00919.04
7.3.70.0170.00519.00
7.3.60.0220.00219.00
7.3.50.0130.00818.93
7.3.40.0180.00918.95
7.3.30.0210.00518.97
7.3.20.0170.00819.74
7.3.10.0110.01019.94
7.3.00.0140.01019.85
7.2.340.0250.00322.96
7.2.330.0110.01119.87
7.2.320.0140.01219.86
7.2.310.0170.00819.83
7.2.300.0180.00619.69
7.2.290.0180.00619.77
7.2.280.0200.01022.96
7.2.270.0330.00022.96
7.2.260.0160.01018.91
7.2.250.0170.00419.09
7.2.240.0150.00618.96
7.2.230.0160.00719.04
7.2.220.0130.00619.13
7.2.210.0140.01018.92
7.2.200.0160.00618.97
7.2.190.0160.00518.97
7.2.180.0150.00518.88
7.2.170.0140.00719.11
7.2.160.0190.00819.05
7.2.150.0210.00520.04
7.2.140.0150.00819.91
7.2.130.0210.00519.97
7.2.120.0110.00919.89
7.2.110.0140.00919.95
7.2.100.0090.00619.94
7.2.90.0090.01220.05
7.2.80.0130.00720.04
7.2.70.0080.01319.98
7.2.60.0120.00719.94
7.2.50.0120.00619.83
7.2.40.0170.00420.03
7.2.30.0160.00619.98
7.2.20.0150.00620.01
7.2.10.0130.00719.96
7.2.00.0060.00819.90
7.1.330.0150.00519.37
7.1.320.0120.00919.53
7.1.310.0100.01019.59
7.1.300.0090.01419.46
7.1.290.0120.00719.43
7.1.280.0160.00819.42
7.1.270.0200.00319.42
7.1.260.0110.00719.37
7.1.250.0140.00819.44
7.1.240.0160.00519.50
7.1.230.0180.00319.39
7.1.220.0180.00519.50
7.1.210.0090.01019.31
7.1.200.0150.00519.41
7.1.190.0110.01319.40
7.1.180.0190.00619.32
7.1.170.0120.00719.46
7.1.160.0090.01119.49
7.1.150.0140.00819.47
7.1.140.0170.00619.33
7.1.130.0120.01119.43
7.1.120.0180.00819.48
7.1.110.0120.01219.51
7.1.100.0130.00719.00
7.1.90.0150.00819.41
7.1.80.0130.01219.50
7.1.70.0120.00818.60
7.1.60.0140.01019.43
7.1.50.0170.00518.68
7.1.40.0140.01119.48
7.1.30.0140.01119.47
7.1.20.0170.00619.46
7.1.10.0160.00719.40
7.1.00.0100.02020.42
7.0.330.0200.00219.29
7.0.320.0120.01119.16
7.0.310.0170.00619.17
7.0.300.0150.00719.08
7.0.290.0090.01419.08
7.0.280.0120.01019.17
7.0.270.0130.01019.20
7.0.260.0160.00519.13
7.0.250.0170.00619.20
7.0.240.0160.00719.32
7.0.230.0200.00819.27
7.0.220.0170.00919.17
7.0.210.0120.00919.26
7.0.200.0540.00417.78
7.0.190.0140.00619.23
7.0.180.0160.00719.15
7.0.170.0170.00719.22
7.0.160.0120.01119.23
7.0.150.0150.00519.25
7.0.140.0100.03020.18
7.0.130.0160.00519.17
7.0.120.0090.01419.18
7.0.110.0110.01019.13
7.0.100.0150.00619.24
7.0.90.0110.00619.17
7.0.80.0170.00719.26
7.0.70.0110.02520.13
7.0.60.0090.01520.13
7.0.50.0150.02720.24
7.0.40.0120.03018.83
7.0.30.0070.03318.94
7.0.20.0130.03518.84
7.0.10.0090.04118.86
7.0.00.0090.03018.75
5.6.400.0140.00718.64
5.6.390.0130.00818.70
5.6.380.0170.00618.62
5.6.370.0140.01218.84
5.6.360.0200.00318.69
5.6.350.0170.00618.74
5.6.340.0130.01218.79
5.6.330.0140.00718.65
5.6.320.0130.00718.65
5.6.310.0080.01018.67
5.6.300.0140.00618.70
5.6.290.0160.00918.81
5.6.280.0070.03619.42
5.6.270.0150.00318.85
5.6.260.0150.00718.61
5.6.250.0180.00518.75
5.6.240.0160.00718.69
5.6.230.0150.00618.57
5.6.220.0110.02519.35
5.6.210.0080.02119.21
5.6.200.0100.03319.39
5.6.190.0130.02019.56
5.6.180.0120.03019.45
5.6.170.0110.02719.49
5.6.160.0100.02119.45
5.6.150.0130.02519.50
5.6.140.0110.02919.40
5.6.130.0100.03319.39
5.6.120.0100.02619.38
5.6.110.0100.03519.38
5.6.100.0120.02819.49
5.6.90.0080.03419.45
5.6.80.0110.02819.18
5.6.70.0150.02619.26
5.6.60.0090.03019.16
5.6.50.0090.02919.34
5.6.40.0130.02619.13
5.6.30.0100.03119.13
5.6.20.0120.02319.11
5.6.10.0090.02119.21
5.6.00.0120.02319.22
5.5.380.0130.00918.67
5.5.370.0120.00718.57
5.5.360.0080.02019.18
5.5.350.0080.03419.20
5.5.340.0140.03019.34
5.5.330.0130.03519.41
5.5.320.0120.03319.25
5.5.310.0160.03119.28
5.5.300.0150.02219.47
5.5.290.0110.02919.28
5.5.280.0110.03219.35
5.5.270.0140.03119.42
5.5.260.0100.03319.32
5.5.250.0110.03119.24
5.5.240.0100.03019.17
5.5.230.0100.02919.06
5.5.220.0080.02719.19
5.5.210.0110.03019.16
5.5.200.0080.02219.03
5.5.190.0110.02819.15
5.5.180.0070.01919.08
5.5.170.0140.00618.71
5.5.160.0080.03019.12
5.5.150.0110.02919.14
5.5.140.0110.02719.04
5.5.130.0080.02819.03
5.5.120.0140.02319.12
5.5.110.0080.03219.05
5.5.100.0120.03018.99
5.5.90.0140.02719.15
5.5.80.0090.03119.06
5.5.70.0050.03419.05
5.5.60.0100.03319.14
5.5.50.0090.02719.01
5.5.40.0150.02919.02
5.5.30.0140.02619.04
5.5.20.0110.02819.03
5.5.10.0120.03119.07
5.5.00.0130.03119.08
5.4.450.0120.02917.81
5.4.440.0120.02817.89
5.4.430.0110.02917.78
5.4.420.0110.02917.84
5.4.410.0120.02217.79
5.4.400.0100.02317.76
5.4.390.0110.02617.65
5.4.380.0120.02117.76
5.4.370.0130.02717.68
5.4.360.0120.02317.77
5.4.350.0090.02717.61
5.4.340.0070.01917.74
5.4.330.0140.00117.07
5.4.320.0120.02317.61
5.4.310.0110.02917.67
5.4.300.0130.02217.76
5.4.290.0130.01417.73
5.4.280.0090.02017.68
5.4.270.0070.02617.74
5.4.260.0060.01917.72
5.4.250.0100.02617.69
5.4.240.0120.02617.76
5.4.230.0070.02817.70
5.4.220.0110.02317.75
5.4.210.0080.02817.72
5.4.200.0140.02117.63
5.4.190.0060.03017.66
5.4.180.0080.02817.66
5.4.170.0060.03117.76
5.4.160.0060.02617.74
5.4.150.0090.01617.63
5.4.140.0050.02116.86
5.4.130.0080.01516.85
5.4.120.0070.02016.76
5.4.110.0050.03116.94
5.4.100.0070.02616.78
5.4.90.0090.02716.76
5.4.80.0050.02816.72
5.4.70.0050.03016.81
5.4.60.0040.02216.74
5.4.50.0050.02816.78
5.4.40.0070.02616.76
5.4.30.0060.02516.80
5.4.20.0050.02716.87
5.4.10.0060.02916.86
5.4.00.0010.02816.55
5.3.290.0030.01816.20
5.3.280.0080.02316.16
5.3.270.0020.03216.14
5.3.260.0090.02316.18
5.3.250.0030.02316.20
5.3.240.0050.01816.17
5.3.230.0010.02016.17
5.3.220.0040.02716.19
5.3.210.0020.03116.17
5.3.200.0050.02616.13
5.3.190.0070.02516.15
5.3.180.0050.02716.17
5.3.170.0090.01916.12
5.3.160.0010.02916.16
5.3.150.0050.02516.16
5.3.140.0010.03216.14
5.3.130.0030.02916.14
5.3.120.0040.03216.15
5.3.110.0030.02816.14
5.3.100.0040.03015.96
5.3.90.0040.02915.94
5.3.80.0040.02815.97
5.3.70.0030.03015.93
5.3.60.0040.02515.98
5.3.50.0040.02815.94
5.3.40.0030.03115.97
5.3.30.0050.02715.94
5.3.20.0070.02415.90
5.3.10.0050.02415.88
5.3.00.0030.02915.84

preferences:
45.1 ms | 400 KiB | 5 Q