3v4l.org

run code in 300+ PHP versions simultaneously
<?php $json = array( "Sample" => array( "context" => 'جمهوری ناسلامی ایران', "test" => '\u1234', ) ); $encoded = json_encode($json); var_dump($encoded); $unescaped = preg_replace_callback('/(?<!\\\\)\\\\u(\w{4})/', function ($matches) { return html_entity_decode('&#x' . $matches[1] . ';', ENT_COMPAT, 'UTF-8'); }, $encoded); var_dump($unescaped);

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)
8.3.60.0150.00016.75
8.3.50.0180.00018.46
8.3.40.0040.01119.05
8.3.30.0070.00719.27
8.3.20.0050.00320.20
8.3.10.0090.00021.92
8.3.00.0050.00318.90
8.2.180.0110.01118.67
8.2.170.0150.00322.96
8.2.160.0070.00722.20
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0080.00319.79
8.2.110.0060.00321.06
8.2.100.0120.00317.84
8.2.90.0060.00319.36
8.2.80.0030.00617.97
8.2.70.0040.00418.00
8.2.60.0060.00317.93
8.2.50.0030.00618.07
8.2.40.0050.00518.16
8.2.30.0050.00319.37
8.2.20.0030.00517.99
8.2.10.0000.00818.03
8.2.00.0040.00417.97
8.1.280.0070.01425.92
8.1.270.0090.00020.63
8.1.260.0060.00326.35
8.1.250.0030.00628.09
8.1.240.0000.00922.14
8.1.230.0030.00919.01
8.1.220.0030.00617.79
8.1.210.0030.00518.77
8.1.200.0060.00317.50
8.1.190.0050.00317.48
8.1.180.0000.00818.10
8.1.170.0040.00418.67
8.1.160.0060.00321.97
8.1.150.0070.00018.91
8.1.140.0050.00217.67
8.1.130.0040.00417.78
8.1.120.0070.00017.53
8.1.110.0000.00917.48
8.1.100.0050.00317.59
8.1.90.0040.00417.52
8.1.80.0040.00417.61
8.1.70.0000.00717.59
8.1.60.0040.00417.77
8.1.50.0040.00417.73
8.1.40.0050.00317.68
8.1.30.0040.00417.69
8.1.20.0090.00017.65
8.1.10.0040.00417.68
8.1.00.0040.00417.66
8.0.300.0000.00818.77
8.0.290.0040.00416.88
8.0.280.0030.00318.48
8.0.270.0000.00717.30
8.0.260.0030.00317.30
8.0.250.0030.00317.09
8.0.240.0000.00717.18
8.0.230.0030.00317.08
8.0.220.0000.00716.92
8.0.210.0070.00017.09
8.0.200.0000.00717.15
8.0.190.0070.00017.02
8.0.180.0000.00717.07
8.0.170.0040.00417.04
8.0.160.0070.00017.10
8.0.150.0000.00717.04
8.0.140.0000.00716.89
8.0.130.0030.00313.50
8.0.120.0000.00816.93
8.0.110.0080.00016.97
8.0.100.0040.00417.08
8.0.90.0000.00817.09
8.0.80.0040.01417.03
8.0.70.0040.00416.91
8.0.60.0000.00816.98
8.0.50.0000.00817.02
8.0.30.0070.01517.45
8.0.20.0190.00617.40
8.0.10.0020.00517.06
8.0.00.0050.01216.73
7.4.330.0050.00015.05
7.4.320.0060.00016.66
7.4.300.0000.00716.82
7.4.290.0040.00416.86
7.4.280.0050.00516.69
7.4.270.0050.00316.58
7.4.260.0040.00416.64
7.4.250.0030.00516.79
7.4.240.0050.00216.70
7.4.230.0000.00716.65
7.4.220.0160.00316.82
7.4.210.0030.01816.86
7.4.200.0070.00016.61
7.4.160.0120.00416.59
7.4.150.0110.00717.40
7.4.140.0100.01217.86
7.4.130.0100.00716.67
7.4.120.0100.00816.90
7.4.110.0130.00316.54
7.4.100.0200.00316.71
7.4.90.0200.00316.63
7.4.80.0070.01019.39
7.4.70.0000.01716.83
7.4.60.0060.01016.68
7.4.50.0000.00916.80
7.4.40.0150.00316.76
7.4.30.0140.01116.75
7.4.00.0090.00615.17
7.3.330.0000.00513.45
7.3.320.0000.00613.32
7.3.310.0000.00716.36
7.3.300.0040.00416.32
7.3.290.0030.01316.43
7.3.280.0120.00616.41
7.3.270.0100.00717.40
7.3.260.0080.00816.39
7.3.250.0060.01516.54
7.3.240.0030.01316.46
7.3.230.0130.00616.52
7.3.210.0080.00816.86
7.3.200.0130.00319.39
7.3.190.0100.01016.56
7.3.180.0060.01016.39
7.3.170.0120.00616.54
7.3.160.0090.00616.62
7.2.330.0110.00616.74
7.2.320.0150.00916.86
7.2.310.0090.01516.89
7.2.300.0070.01016.70
7.2.290.0060.01716.75
7.2.60.0050.00817.06
7.2.00.0000.00919.64
7.1.200.0100.00315.84
7.1.100.0040.00717.93
7.1.70.0030.00517.22
7.1.60.0030.02219.46
7.1.50.0070.01317.04
7.1.00.0070.07322.45
7.0.200.0040.00416.65
7.0.140.0030.07022.04
7.0.90.0600.08319.98
7.0.80.0470.03719.90
7.0.70.0500.07319.88
7.0.60.0400.07719.98
7.0.50.0570.07320.24
7.0.40.0100.08020.09
7.0.30.0070.07720.06
7.0.20.0200.06720.12
7.0.10.0230.05720.07
7.0.00.0030.09020.16
5.6.280.0070.07021.00
5.6.230.0130.04720.63
5.6.220.0200.06320.58
5.6.210.0030.08320.57
5.6.200.0000.04720.98
5.6.190.0130.07321.11
5.6.180.0070.08720.96
5.6.170.0030.07721.05
5.6.160.0030.08721.04
5.6.150.0170.07721.08
5.6.140.0130.08321.07
5.6.130.0130.07721.06
5.6.120.0130.08020.96
5.6.110.0030.08021.10
5.6.100.0130.07721.01
5.6.90.0100.05721.00
5.6.80.0330.04720.35
5.6.70.0130.06720.41
5.6.60.0070.08320.30
5.6.50.0100.07320.50
5.6.40.0200.04020.43
5.6.30.0030.08020.46
5.6.20.0100.05720.41
5.6.10.0070.08020.41
5.6.00.0130.06720.42
5.5.370.0030.05720.55
5.5.360.0100.07720.34
5.5.350.0030.09020.46
5.5.340.0000.05320.63
5.5.330.0100.07720.92
5.5.320.0170.06320.93
5.5.310.0130.07320.83
5.5.300.0070.08020.86
5.5.290.0030.07720.91
5.5.280.0200.07720.86
5.5.270.0170.07320.82
5.5.260.0130.08320.79
5.5.250.0070.07720.54
5.5.240.0170.02720.23
5.5.230.0000.09020.31
5.5.220.0100.08320.21
5.5.210.0100.04720.21
5.5.200.0130.06720.29
5.5.190.0070.08020.09
5.5.180.0100.07720.15
5.5.160.0070.08020.16
5.5.150.0130.07020.25
5.5.140.0070.07720.16
5.5.130.0030.08020.12
5.5.120.0070.08320.22
5.5.110.0070.04320.14
5.5.100.0100.07320.16
5.5.90.0070.07320.05
5.5.80.0130.06720.20
5.5.70.0130.07020.14
5.5.60.0070.05020.09
5.5.50.0070.06719.93
5.5.40.0100.04320.16
5.5.30.0030.08319.98
5.5.20.0030.07020.05
5.5.10.0030.08019.96
5.5.00.0000.07320.02
5.4.450.0070.06019.47
5.4.440.0170.06719.40
5.4.430.0070.07719.23
5.4.420.0100.07719.35
5.4.410.0030.04319.23
5.4.400.0070.06319.05
5.4.390.0030.08019.23
5.4.380.0130.06718.90
5.4.370.0130.07319.18
5.4.360.0100.07319.12
5.4.350.0130.06019.03
5.4.340.0000.05719.18
5.4.320.0100.04019.18
5.4.310.0070.06319.03
5.4.300.0000.07719.14
5.4.290.0070.06019.18
5.4.280.0170.06319.13
5.4.270.0030.06719.16
5.4.260.0100.04719.07
5.4.250.0130.07018.87
5.4.240.0070.05319.12
5.4.230.0070.07319.01
5.4.220.0030.05719.20
5.4.210.0070.04719.02
5.4.200.0030.04019.02
5.4.190.0070.07318.84
5.4.180.0070.06019.11
5.4.170.0070.05319.20
5.4.160.0070.04018.85
5.4.150.0070.07318.90
5.4.140.0030.04016.29
5.4.130.0000.05016.35
5.4.120.0070.03316.19
5.4.110.0030.03716.50
5.4.100.0070.03716.34
5.4.90.0100.03016.47
5.4.80.0070.04016.43
5.4.70.0030.07016.27
5.4.60.0030.03716.48
5.4.50.0000.03316.38
5.4.40.0030.03716.53
5.4.30.0000.04016.39
5.4.20.0070.06716.31
5.4.10.0000.04016.43
5.4.00.0000.03315.73
5.3.290.0030.08314.73
5.3.280.0030.08014.56
5.3.270.0070.07314.63
5.3.260.0030.07314.65
5.3.250.0130.04714.65
5.3.240.0030.06014.63
5.3.230.0070.06714.60
5.3.220.0030.03714.63
5.3.210.0000.04014.60
5.3.200.0100.03014.45
5.3.190.0000.04014.63
5.3.180.0070.05014.51
5.3.170.0070.03014.48
5.3.160.0030.05314.63
5.3.150.0100.03314.49
5.3.140.0030.03314.68
5.3.130.0030.04014.55
5.3.120.0070.07314.59
5.3.110.0000.04014.51
5.3.100.0000.04014.00
5.3.90.0030.03714.01
5.3.80.0030.03713.99
5.3.70.0000.03714.14
5.3.60.0030.06314.00
5.3.50.0030.04014.00
5.3.40.0100.03013.98
5.3.30.0100.02313.82
5.3.20.0030.03713.69
5.3.10.0070.04013.57
5.3.00.0030.03313.59
5.2.170.0000.03011.16
5.2.160.0030.05011.12
5.2.150.0030.03011.14
5.2.140.0070.03311.13
5.2.130.0030.02311.08
5.2.120.0000.03010.91
5.2.110.0000.03011.16
5.2.100.0000.04711.10
5.2.90.0000.05711.10
5.2.80.0070.02311.14
5.2.70.0000.06011.11
5.2.60.0070.02011.00
5.2.50.0070.02710.88
5.2.40.0000.03010.84
5.2.30.0000.03310.97
5.2.20.0000.03010.96
5.2.10.0000.03310.87
5.2.00.0070.04010.79
5.1.60.0000.02710.75
5.1.50.0030.02710.75
5.1.40.0030.02010.75
5.1.30.0000.02710.75
5.1.20.0000.02310.75
5.1.10.0000.02310.75
5.1.00.0070.02010.75
5.0.50.0000.02310.75
5.0.40.0070.02310.75
5.0.30.0070.04310.75
5.0.20.0030.01710.75
5.0.10.0030.01710.75
5.0.00.0000.04010.75
4.4.90.0000.01310.75
4.4.80.0030.01310.75
4.4.70.0000.01710.75
4.4.60.0000.02010.75
4.4.50.0000.01710.75
4.4.40.0000.02310.75
4.4.30.0070.01010.75
4.4.20.0000.01310.75
4.4.10.0030.01010.75
4.4.00.0000.02710.75
4.3.110.0030.01010.75
4.3.100.0000.01310.75
4.3.90.0000.02310.75
4.3.80.0030.02310.75
4.3.70.0000.01310.75
4.3.60.0030.02310.75
4.3.50.0000.01710.75
4.3.40.0000.03010.75
4.3.30.0030.01310.75
4.3.20.0030.02710.75
4.3.10.0000.03710.75
4.3.00.0000.03710.75

preferences:
52.25 ms | 400 KiB | 5 Q