3v4l.org

run code in 300+ PHP versions simultaneously
<?php class LZW { function compress($uncompressed) { $dictSize = 256; $dictionary = array(); for ($i = 0; $i < 256; $i++) { $dictionary[chr($i)] = $i; } $w = ""; $result = ""; for ($i = 0; $i < strlen($uncompressed); $i++) { $c = $this->charAt($uncompressed, $i); $wc = $w.$c; if (isset($dictionary[$wc])) { $w = $wc; } else { if ($result != "") { $result .= ",".$dictionary[$w]; } else { $result .= $dictionary[$w]; } $dictionary[$wc] = $dictSize++; $w = "".$c; } } if ($w != "") { if ($result != "") { $result .= ",".$dictionary[$w]; } else { $result .= $dictionary[$w]; } } return $result; } function decompress($compressed) { $compressed = explode(",", $compressed); $dictSize = 256; $dictionary = array(); for ($i = 1; $i < 256; $i++) { $dictionary[$i] = chr($i); } $w = chr($compressed[0]); $result = $w; for ($i = 1; $i < count($compressed); $i++) { $entry = ""; $k = $compressed[$i]; if (isset($dictionary[$k])) { $entry = $dictionary[$k]; } else if ($k == $dictSize) { $entry = $w.$this->charAt($w, 0); } else { return null; } $result .= $entry; $dictionary[$dictSize++] = $w.$this->charAt($entry, 0); $w = $entry; } return $result; } function charAt($string, $index){ if($index < mb_strlen($string)){ return mb_substr($string, $index, 1); } else{ return -1; } } } $lzw = new LZW(); echo $lzw->decompress("dGl0bGUgw4ljaGFuZ2VzIExNNwoKZVNtaWxlLT4rTE03OiBBcnRpY2xlCkxNNy0-LQAWBjogUmV0b3VyABQJACUPUkVDACEPTURTAEkQT1AAPhZPUAoAaAUtPgBlCEltYWdlIHN0b2Nr");

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)
8.3.60.0120.00616.87
8.3.50.0150.00222.89
8.3.40.0070.00718.76
8.3.30.0120.00319.17
8.3.20.0050.00320.39
8.3.10.0050.00323.66
8.3.00.0080.00017.63
8.2.180.0120.00616.61
8.2.170.0120.00622.96
8.2.160.0110.00420.57
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0050.00226.16
8.2.120.0000.00820.95
8.2.110.0100.00021.04
8.2.100.0070.00417.71
8.2.90.0090.00019.22
8.2.80.0060.00317.97
8.2.70.0080.00017.75
8.2.60.0040.00417.80
8.2.50.0060.00318.07
8.2.40.0000.00818.22
8.2.30.0080.00018.13
8.2.20.0000.00717.66
8.2.10.0000.00817.95
8.2.00.0060.00317.63
8.1.280.0150.00725.92
8.1.270.0050.00323.97
8.1.260.0000.00726.35
8.1.250.0000.00728.09
8.1.240.0070.00322.42
8.1.230.0110.00020.81
8.1.220.0030.00517.74
8.1.210.0040.00418.77
8.1.200.0080.00017.35
8.1.190.0040.00417.10
8.1.180.0000.00918.10
8.1.170.0060.00318.64
8.1.160.0000.00821.88
8.1.150.0000.00718.84
8.1.140.0040.00417.37
8.1.130.0040.00417.76
8.1.120.0050.00317.39
8.1.110.0000.00717.39
8.1.100.0000.00717.42
8.1.90.0050.00317.31
8.1.80.0050.00217.38
8.1.70.0030.00317.32
8.1.60.0030.00617.42
8.1.50.0000.00817.42
8.1.40.0000.00717.52
8.1.30.0050.00317.64
8.1.20.0040.00417.54
8.1.10.0000.00817.59
8.1.00.0080.00017.48
8.0.300.0000.00720.02
8.0.290.0040.00416.63
8.0.280.0000.00718.27
8.0.270.0070.00017.13
8.0.260.0000.00617.28
8.0.250.0000.00716.89
8.0.240.0070.00016.99
8.0.230.0000.00716.96
8.0.220.0000.00816.78
8.0.210.0040.00416.78
8.0.200.0030.00516.84
8.0.190.0050.00317.01
8.0.180.0040.00416.93
8.0.170.0040.00416.96
8.0.160.0040.00416.73
8.0.150.0040.00416.92
8.0.140.0040.00416.75
8.0.130.0060.00013.33
8.0.120.0000.00816.89
8.0.110.0000.00716.90
8.0.100.0040.00416.77
8.0.90.0000.00816.86
8.0.80.0060.01016.95
8.0.70.0030.00616.97
8.0.60.0040.00416.89
8.0.50.0080.00016.82
8.0.30.0080.01416.96
8.0.20.0100.00817.40
8.0.10.0020.00516.86
8.0.00.0120.00516.79
7.4.330.0000.00515.07
7.4.320.0000.00816.38
7.4.300.0060.00016.62
7.4.290.0000.00716.61
7.4.280.0000.00816.52
7.4.270.0000.00716.46
7.4.260.0030.00616.57
7.4.250.0030.00516.54
7.4.240.0070.00016.57
7.4.230.0000.00716.32
7.4.220.0130.00616.57
7.4.210.0000.01416.57
7.4.200.0040.00416.52
7.4.160.0100.00616.49
7.4.150.0210.01217.40
7.4.140.0080.01217.86
7.4.130.0120.00616.56
7.4.120.0110.00916.58
7.4.110.0060.01116.52
7.4.100.0060.01616.44
7.4.90.0090.01216.47
7.4.80.0130.00519.39
7.4.70.0110.00816.60
7.4.60.0000.01716.49
7.4.50.0080.00016.60
7.4.40.0060.01016.30
7.4.30.0110.00916.44
7.4.00.0040.00715.06
7.3.330.0070.00013.24
7.3.320.0000.00513.36
7.3.310.0000.00716.27
7.3.300.0070.00016.38
7.3.290.0060.00916.36
7.3.280.0050.01116.39
7.3.270.0060.01217.40
7.3.260.0080.00816.46
7.3.250.0110.00916.58
7.3.240.0110.01116.45
7.3.230.0060.01016.46
7.3.210.0140.00316.44
7.3.200.0030.01419.39
7.3.190.0070.01516.34
7.3.180.0060.01016.71
7.3.170.0030.01216.38
7.3.160.0060.01216.47
7.3.10.0090.00616.41
7.3.00.0060.00616.62
7.2.330.0070.01116.54
7.2.320.0130.01016.52
7.2.310.0170.00016.84
7.2.300.0030.02416.63
7.2.290.0090.01216.82
7.2.130.0030.00917.16
7.2.120.0030.00916.99
7.2.110.0030.00916.94
7.2.100.0060.00316.88
7.2.90.0040.01216.72
7.2.80.0140.00017.06
7.2.70.0040.00816.94
7.2.60.0080.00516.95
7.2.50.0090.00317.05
7.2.40.0100.00016.76
7.2.30.0070.00417.09
7.2.20.0030.00716.94
7.2.10.0040.00716.65
7.2.00.0030.01018.14
7.1.250.0070.00715.88
7.1.100.0070.00717.98
7.1.70.0040.00417.18
7.1.60.0100.01319.40
7.1.50.0030.01016.70
7.1.00.0030.07722.30
7.0.200.0040.00716.53
7.0.140.0030.06721.95
7.0.100.0030.08319.96
7.0.90.0100.07019.98
7.0.80.0100.05319.89
7.0.70.0070.08019.98
7.0.60.0100.04019.94
7.0.50.0030.08020.26
7.0.40.0100.04320.00
7.0.30.0070.05020.11
7.0.20.0100.08020.17
7.0.10.0030.05320.10
7.0.00.0200.03720.08
5.6.250.0030.05020.66
5.6.240.0070.04720.70
5.6.230.0030.09020.60
5.6.220.0030.07020.69
5.6.210.0130.03320.64
5.6.200.0070.08321.18
5.6.190.0070.04721.14
5.6.180.0100.05021.16
5.6.170.0070.04021.20
5.6.160.0030.05021.01
5.6.150.0070.08321.14
5.6.140.0030.09021.04
5.6.130.0030.05021.03
5.6.120.0030.06321.13
5.6.110.0030.08021.12
5.6.100.0030.04021.11
5.6.90.0030.09021.01
5.6.80.0070.06020.44
5.6.70.0100.03020.37
5.6.60.0030.04020.48
5.6.50.0130.03720.56
5.6.40.0000.04320.53
5.6.30.0070.04020.49
5.6.20.0030.04720.30
5.6.10.0000.04320.34
5.6.00.0030.04020.45
5.5.380.0070.09020.46
5.5.370.0030.05720.48
5.5.360.0030.04320.52
5.5.350.0100.07020.43
5.5.340.0030.05020.89
5.5.330.0030.08320.65
5.5.320.0130.05020.65
5.5.310.0070.05320.95
5.5.300.0130.07720.89
5.5.290.0070.04320.85
5.5.280.0070.07320.78
5.5.270.0070.06020.77
5.5.260.0070.07020.90
5.5.250.0170.07320.62
5.5.240.0000.04020.28
5.5.230.0100.05320.31
5.5.220.0070.03720.19
5.5.210.0070.03720.32
5.5.200.0030.04020.25
5.5.190.0030.04020.00
5.5.180.0000.04319.97
5.5.160.0100.03720.15
5.5.150.0100.03720.27
5.5.140.0100.03720.20
5.5.130.0070.03720.25
5.5.120.0000.04320.14
5.5.110.0100.03720.23
5.5.100.0070.04020.05
5.5.90.0070.03720.07
5.5.80.0070.04320.19
5.5.70.0030.04019.93
5.5.60.0070.03320.11
5.5.50.0070.03720.12
5.5.40.0070.03720.08
5.5.30.0100.03720.18
5.5.20.0030.04020.08
5.5.10.0030.04020.01
5.5.00.0000.04020.04
5.4.450.0030.04719.42
5.4.440.0300.06019.46
5.4.430.0030.04319.46
5.4.420.0070.07319.41
5.4.410.0030.04719.22
5.4.400.0100.03019.24
5.4.390.0070.04719.04
5.4.380.0000.04719.20
5.4.370.0030.03718.90
5.4.360.0070.04019.19
5.4.350.0170.02719.18
5.4.340.0070.03719.18
5.4.320.0030.04018.85
5.4.310.0030.03719.05
5.4.300.0000.04319.18
5.4.290.0030.03719.03
5.4.280.0070.03319.09
5.4.270.0030.04019.13
5.4.260.0170.02719.15
5.4.250.0070.03719.13
5.4.240.0000.04019.22
5.4.230.0000.04319.04
5.4.220.0000.04319.09
5.4.210.0070.04019.17
5.4.200.0100.03319.04
5.4.190.0030.04319.08
5.4.180.0170.03019.11
5.4.170.0100.03718.89
5.4.160.0070.03719.14
5.4.150.0100.03319.02
5.4.140.0030.04016.24
5.4.130.0030.03716.38
5.4.120.0030.03716.43
5.4.110.0030.04016.53
5.4.100.0030.03016.56
5.4.90.0100.03016.49
5.4.80.0070.03316.38
5.4.70.0030.03016.32
5.4.60.0000.04016.55
5.4.50.0070.02716.39
5.4.40.0030.03016.51
5.4.30.0070.03316.44
5.4.20.0100.07016.47
5.4.10.0000.07716.44
5.4.00.0100.06715.99
5.3.290.0100.03014.75
5.3.280.0100.03014.75
5.3.270.0000.04314.71
5.3.260.0100.03314.75
5.3.250.0100.04014.79
5.3.240.0130.03014.72
5.3.230.0030.03714.64
5.3.220.0100.03014.74
5.3.210.0030.03014.74
5.3.200.0030.03714.74
5.3.190.0070.03314.64
5.3.180.0100.02314.57
5.3.170.0030.03714.75
5.3.160.0000.04014.68
5.3.150.0070.03714.59
5.3.140.0030.03014.67
5.3.130.0000.05714.71
5.3.120.0030.08714.66
5.3.110.0030.04714.62
5.3.100.0100.03314.12
5.3.90.0030.07314.18
5.3.80.0130.07013.99
5.3.70.0070.06014.12
5.3.60.0070.07314.04
5.3.50.0130.07314.01
5.3.40.0030.06013.97
5.3.30.0100.06714.01
5.3.20.0100.03013.69
5.3.10.0200.06013.61
5.3.00.0070.07013.71
5.2.170.0070.06012.61
5.2.160.0070.05012.61
5.2.150.0070.05012.61
5.2.140.0070.03312.61
5.2.130.0100.03312.61
5.2.120.0070.05712.61
5.2.110.0000.03712.61
5.2.100.0030.03712.61
5.2.90.0000.07012.61
5.2.80.0100.05012.61
5.2.70.0030.05712.61
5.2.60.0030.05312.61
5.2.50.0030.04712.61
5.2.40.0030.06312.61
5.2.30.0070.03012.61
5.2.20.0070.05712.61
5.2.10.0070.05712.61
5.2.00.0030.04312.61
5.1.60.0030.05312.61
5.1.50.0100.04012.61
5.1.40.0030.03712.61
5.1.30.0070.05312.61
5.1.20.0200.01712.61
5.1.10.0070.05012.61
5.1.00.0030.04012.61
5.0.50.0030.04712.61
5.0.40.0100.04012.61
5.0.30.0070.06312.61
5.0.20.0000.04012.61
5.0.10.0030.02712.61
5.0.00.0000.05312.61
4.4.90.0000.02012.61
4.4.80.0070.03012.61
4.4.70.0030.01712.61
4.4.60.0030.03312.61
4.4.50.0000.04012.61
4.4.40.0070.05312.61
4.4.30.0000.03712.61
4.4.20.0000.04012.61
4.4.10.0030.01312.61
4.4.00.0030.02312.61
4.3.110.0030.03012.61
4.3.100.0030.03312.61
4.3.90.0030.03012.61
4.3.80.0100.04712.61
4.3.70.0000.04312.61
4.3.60.0070.03312.61
4.3.50.0000.03012.61
4.3.40.0000.05012.61
4.3.30.0000.03712.61
4.3.20.0000.04012.61
4.3.10.0030.02312.61
4.3.00.0000.03712.61

preferences:
31.86 ms | 400 KiB | 5 Q