3v4l.org

run code in 300+ PHP versions simultaneously
<?php $source = json_encode([new StdClass, "This is a test", "Foo's bar", 1, 5]); var_dump(json_encode($source)); function escapeForJs($string) { $len = mb_strlen($string, 'utf8'); $array = []; for ($i = 0; $i < $len; $i++) { $array[] = mb_substr($string, $i, 1, 'utf8'); } return implode("", array_map(function($char) { if (ctype_alnum($char)) { return $char; } $bytelen = mb_strlen($char, '8bit'); if ($bytelen === 1) { return '\\x' . str_pad(dechex(ord($char)), 2, '0', STR_PAD_LEFT); } $result = '\\u'; for ($i = 0; $i < $bytelen; $i++) { $result .= str_pad(dechex(ord($char[$i])), 2, '0', STR_PAD_LEFT); } return $result; }, $array)); } var_dump(escapeForJs($source));

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)
8.3.60.0070.01416.75
8.3.50.0040.01117.98
8.3.40.0110.01118.83
8.3.30.0130.00719.17
8.3.20.0040.00419.94
8.3.10.0030.00521.91
8.3.00.0090.00019.13
8.2.180.0160.00018.63
8.2.170.0040.01122.96
8.2.160.0040.01120.50
8.2.150.0030.00724.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0080.00019.25
8.2.110.0040.00722.59
8.2.100.0070.00719.61
8.2.90.0040.00419.47
8.2.80.0050.00317.97
8.2.70.0060.00617.50
8.2.60.0030.00617.93
8.2.50.0040.00418.07
8.2.40.0000.00920.13
8.2.30.0080.00018.37
8.2.20.0080.00017.91
8.2.10.0030.00518.22
8.2.00.0000.00717.93
8.1.280.0110.00725.92
8.1.270.0040.00419.01
8.1.260.0000.00726.35
8.1.250.0070.00028.09
8.1.240.0030.00719.32
8.1.230.0060.00617.88
8.1.220.0080.00017.90
8.1.210.0000.00918.77
8.1.200.0030.00617.63
8.1.190.0040.00417.60
8.1.180.0000.00818.10
8.1.170.0000.00920.55
8.1.160.0000.00821.98
8.1.150.0000.00719.02
8.1.140.0000.00717.50
8.1.130.0030.00317.84
8.1.120.0000.00717.47
8.1.110.0050.00317.48
8.1.100.0000.00717.56
8.1.90.0000.00717.51
8.1.80.0040.00417.58
8.1.70.0000.00717.51
8.1.60.0000.00817.85
8.1.50.0050.00217.58
8.1.40.0020.00517.70
8.1.30.0050.00317.75
8.1.20.0030.00517.85
8.1.10.0000.00817.67
8.1.00.0090.00317.79
8.0.300.0000.00718.77
8.0.290.0000.00816.72
8.0.280.0030.00518.52
8.0.270.0070.00017.45
8.0.260.0000.00717.39
8.0.250.0050.00317.04
8.0.240.0080.00317.13
8.0.230.0040.00416.98
8.0.220.0040.00416.91
8.0.210.0070.00017.05
8.0.200.0030.00316.95
8.0.190.0000.00817.14
8.0.180.0070.00017.05
8.0.170.0040.00417.05
8.0.160.0000.00817.02
8.0.150.0040.00416.88
8.0.140.0020.00516.93
8.0.130.0070.00213.44
8.0.120.0080.00017.00
8.0.110.0040.00416.96
8.0.100.0080.00016.92
8.0.90.0040.00416.92
8.0.80.0100.01317.05
8.0.70.0000.00717.06
8.0.60.0000.00717.07
8.0.50.0050.00316.96
8.0.30.0100.01117.20
8.0.20.0160.00317.40
8.0.10.0080.00017.11
8.0.00.0110.00716.83
7.4.330.0060.00015.15
7.4.320.0040.00416.44
7.4.300.0030.00316.58
7.4.290.0030.00516.63
7.4.280.0000.00916.49
7.4.270.0000.00716.49
7.4.260.0100.00016.68
7.4.250.0000.00916.68
7.4.240.0050.00316.56
7.4.230.0070.00016.46
7.4.220.0070.01116.64
7.4.210.0140.00716.65
7.4.200.0040.00416.69
7.4.160.0090.00916.61
7.4.150.0120.00617.40
7.4.140.0070.01217.86
7.4.130.0110.00916.65
7.4.120.0140.01116.49
7.4.110.0070.01716.57
7.4.100.0070.01116.52
7.4.90.0100.00716.55
7.4.80.0120.00619.39
7.4.70.0130.00316.32
7.4.60.0080.00816.47
7.4.50.0080.00016.68
7.4.40.0150.00616.51
7.4.30.0100.01016.67
7.4.00.0030.01214.93
7.3.330.0000.00613.36
7.3.320.0060.00613.36
7.3.310.0040.00416.47
7.3.300.0000.00716.30
7.3.290.0040.01116.39
7.3.280.0090.01016.39
7.3.270.0120.00617.40
7.3.260.0070.01016.70
7.3.250.0150.00616.52
7.3.240.0060.01216.52
7.3.230.0140.01016.53
7.3.210.0110.00616.70
7.3.200.0130.00319.39
7.3.190.0120.00316.63
7.3.180.0090.00916.60
7.3.170.0090.00916.48
7.3.160.0100.01016.61
7.2.330.0090.00916.55
7.2.320.0130.00416.86
7.2.310.0110.00616.73
7.2.300.0090.00616.54
7.2.290.0030.01616.88
7.2.60.0070.00716.87
7.2.00.0030.01019.40
7.1.200.0270.00515.49
7.1.100.0140.00018.13
7.1.70.0000.00817.23
7.1.60.0120.01219.50
7.1.50.0210.01435.01
7.1.00.0000.07722.41
7.0.200.0340.00315.05
7.0.140.0100.06322.02
7.0.90.0570.07319.93
7.0.80.0500.05019.97
7.0.70.0170.05719.95
7.0.60.0370.07719.96
7.0.50.0600.07720.35
7.0.40.0100.07320.11
7.0.30.0100.07720.15
7.0.20.0030.05319.96
7.0.10.0000.07020.08
7.0.00.0030.07720.16
5.6.280.0100.06320.82
5.6.240.0100.04020.49
5.6.230.0100.08020.62
5.6.220.0070.04320.70
5.6.210.0070.06020.61
5.6.200.0100.03721.04
5.6.190.0100.08321.02
5.6.180.0070.08721.01
5.6.170.0130.04720.94
5.6.160.0030.09321.02
5.6.150.0030.06021.04
5.6.140.0000.06021.09
5.6.130.0030.04721.04
5.6.120.0070.07021.04
5.6.110.0130.08020.95
5.6.100.0030.06721.01
5.6.90.0070.08021.03
5.6.80.0000.07020.57
5.6.70.0030.07020.55
5.6.60.0100.03720.38
5.6.50.0100.07020.40
5.6.40.0030.04720.31
5.6.30.0000.05020.44
5.6.20.0000.05020.31
5.6.10.0100.07720.31
5.6.00.0000.06320.39
5.5.380.0100.07720.52
5.5.370.0070.06320.32
5.5.360.0130.06320.52
5.5.350.0130.07720.38
5.5.340.0100.04020.89
5.5.330.0030.04320.87
5.5.320.0070.06720.84
5.5.310.0030.05020.91
5.5.300.0030.05320.91
5.5.290.0100.03720.88
5.5.280.0170.06720.80
5.5.270.0030.05320.64
5.5.260.0030.08320.73
5.5.250.0100.07320.69
5.5.240.0070.07720.13
5.5.230.0030.04320.19
5.5.220.0070.03720.22
5.5.210.0030.05320.16
5.5.200.0070.04020.28
5.5.190.0000.07720.24
5.5.180.0030.07720.12
5.5.160.0130.06020.25
5.5.150.0030.06320.28
5.5.140.0070.06020.09
5.5.130.0070.05720.11
5.5.120.0130.06320.21
5.5.110.0070.06720.23
5.5.100.0030.04320.07
5.5.90.0070.05320.13
5.5.80.0070.04320.21
5.5.70.0100.08020.07
5.5.60.0070.08320.04
5.5.50.0030.07720.15
5.5.40.0070.06019.97
5.5.30.0230.05320.16
5.5.20.0000.07020.01
5.5.10.0130.06020.09
5.5.00.0000.06320.02
5.4.450.0030.04319.48
5.4.440.0100.07719.50
5.4.430.0000.09319.49
5.4.420.0070.07719.53
5.4.410.0070.04319.43
5.4.400.0030.04019.05
5.4.390.0070.06019.09
5.4.380.0100.04019.04
5.4.370.0070.03319.05
5.4.360.0030.04319.14
5.4.350.0030.07319.13
5.4.340.0030.05719.13
5.4.320.0070.07018.95
5.4.310.0000.04018.95
5.4.300.0030.08019.04
5.4.290.0000.04719.15
5.4.280.0100.07319.09
5.4.270.0130.03319.13
5.4.260.0000.04018.90
5.4.250.0000.06018.95
5.4.240.0000.06019.04
5.4.230.0170.03319.11
5.4.220.0070.05019.23
5.4.210.0030.06018.84
5.4.200.0130.06019.12
5.4.190.0130.06718.95
5.4.180.0030.04019.12
5.4.170.0070.06019.04
5.4.160.0100.03719.21
5.4.150.0000.04318.88
5.4.140.0030.03716.41
5.4.130.0070.03316.41
5.4.120.0070.03316.34
5.4.110.0030.03716.45
5.4.100.0030.05716.45
5.4.90.0070.07016.39
5.4.80.0070.03016.50
5.4.70.0030.03716.43
5.4.60.0000.07716.37
5.4.50.0030.05016.47
5.4.40.0000.04016.37
5.4.30.0030.03316.25
5.4.20.0070.03016.42
5.4.10.0030.03716.36
5.4.00.0000.03715.84
5.3.290.0000.04014.50
5.3.280.0130.06714.55
5.3.270.0000.04714.59
5.3.260.0030.05014.54
5.3.250.0100.04714.43
5.3.240.0130.03714.42
5.3.230.0000.03714.41
5.3.220.0030.04314.38
5.3.210.0030.03314.43
5.3.200.0030.04714.57
5.3.190.0070.05314.55
5.3.180.0000.04314.44
5.3.170.0000.03314.42
5.3.160.0000.03714.47
5.3.150.0000.06714.54
5.3.140.0170.02314.51
5.3.130.0030.03714.52
5.3.120.0130.03714.53
5.3.110.0030.05314.55
5.3.100.0030.03714.02
5.3.90.0000.03713.97
5.3.80.0000.04013.87
5.3.70.0070.03313.95
5.3.60.0000.03713.87
5.3.50.0000.03713.92
5.3.40.0070.03313.71
5.3.30.0030.04313.77
5.3.20.0030.03013.46
5.3.10.0030.03313.52
5.3.00.0030.04713.59
5.2.170.0000.02711.10
5.2.160.0000.03311.13
5.2.150.0030.02711.16
5.2.140.0000.03311.18
5.2.130.0000.03011.05
5.2.120.0030.02711.09
5.2.110.0000.03010.91
5.2.100.0000.03011.09
5.2.90.0000.03011.10
5.2.80.0030.02310.94
5.2.70.0000.03711.14
5.2.60.0030.03311.04
5.2.50.0030.02710.86
5.2.40.0070.02310.85
5.2.30.0100.02311.00
5.2.20.0000.03010.92
5.2.10.0000.02710.89
5.2.00.0070.02310.65
5.1.60.0030.0239.82
5.1.50.0000.02710.04
5.1.40.0000.0239.96
5.1.30.0030.02710.26
5.1.20.0000.03310.41
5.1.10.0100.0439.91
5.1.00.0070.05310.11
5.0.50.0000.0478.54
5.0.40.0000.0478.46
5.0.30.0000.0638.24
5.0.20.0130.0338.28
5.0.10.0000.0438.16
5.0.00.0000.0708.18
4.4.90.0030.0106.50
4.4.80.0030.0136.50
4.4.70.0070.0106.50
4.4.60.0000.0136.50
4.4.50.0000.0176.50
4.4.40.0000.0236.50
4.4.30.0000.0176.50
4.4.20.0000.0336.50
4.4.10.0030.0276.50
4.4.00.0000.0276.50
4.3.110.0030.0236.50
4.3.100.0030.0136.50
4.3.90.0000.0376.50
4.3.80.0000.0506.50
4.3.70.0030.0376.50
4.3.60.0030.0376.50
4.3.50.0030.0276.50
4.3.40.0030.0506.50
4.3.30.0000.0306.50
4.3.20.0070.0336.50
4.3.10.0000.0336.50
4.3.00.0000.0206.50

preferences:
46.08 ms | 400 KiB | 5 Q