3v4l.org

run code in 300+ PHP versions simultaneously
<?php $source = json_encode([new StdClass, "This is a test", "Foo's bar", 1, 5]); function escapeForJs($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)
8.3.60.0120.00916.75
8.3.50.0130.00621.92
8.3.40.0140.00718.84
8.3.30.0070.00719.01
8.3.20.0030.00520.32
8.3.10.0030.00521.60
8.3.00.0000.00819.51
8.2.180.0080.01118.66
8.2.170.0060.00922.96
8.2.160.0100.00720.52
8.2.150.0040.00724.18
8.2.140.0060.00324.66
8.2.130.0000.00826.16
8.2.120.0080.00019.36
8.2.110.0030.00721.25
8.2.100.0040.00819.60
8.2.90.0000.00819.48
8.2.80.0090.00017.97
8.2.70.0090.00317.75
8.2.60.0100.00018.05
8.2.50.0050.00318.07
8.2.40.0050.00320.20
8.2.30.0050.00318.33
8.2.20.0040.00417.89
8.2.10.0040.00418.14
8.2.00.0030.00617.88
8.1.280.0030.01525.92
8.1.270.0000.00819.13
8.1.260.0050.00326.35
8.1.250.0050.00228.09
8.1.240.0070.00319.34
8.1.230.0080.00417.91
8.1.220.0060.00317.77
8.1.210.0030.00618.77
8.1.200.0000.01017.60
8.1.190.0080.00017.60
8.1.180.0080.00018.10
8.1.170.0030.00620.62
8.1.160.0040.00422.00
8.1.150.0070.00018.96
8.1.140.0000.00817.70
8.1.130.0000.00717.93
8.1.120.0040.00417.57
8.1.110.0030.00317.54
8.1.100.0000.00817.66
8.1.90.0030.00517.64
8.1.80.0000.00817.51
8.1.70.0000.00717.52
8.1.60.0000.00817.74
8.1.50.0000.00917.80
8.1.40.0060.00317.72
8.1.30.0050.00317.82
8.1.20.0020.00517.86
8.1.10.0050.00317.64
8.1.00.0070.00717.71
8.0.300.0040.00418.77
8.0.290.0040.00416.88
8.0.280.0000.00718.50
8.0.270.0040.00416.81
8.0.260.0030.00317.27
8.0.250.0070.00016.98
8.0.240.0030.00717.11
8.0.230.0000.01016.98
8.0.220.0000.00716.92
8.0.210.0000.00716.94
8.0.200.0000.00617.16
8.0.190.0080.00016.96
8.0.180.0040.00417.00
8.0.170.0040.00416.91
8.0.160.0060.00317.09
8.0.150.0030.00516.93
8.0.140.0030.00616.92
8.0.130.0050.00313.48
8.0.120.0040.00417.02
8.0.110.0000.00716.87
8.0.100.0040.00416.94
8.0.90.0000.00717.02
8.0.80.0100.00616.98
8.0.70.0000.00816.96
8.0.60.0040.00416.93
8.0.50.0030.00516.88
8.0.30.0110.00917.08
8.0.20.0140.00617.40
8.0.10.0000.00817.15
8.0.00.0060.01116.79
7.4.330.0070.00015.03
7.4.320.0070.00016.60
7.4.300.0060.00016.62
7.4.290.0040.00416.68
7.4.280.0030.00616.68
7.4.270.0030.00316.76
7.4.260.0070.00316.55
7.4.250.0030.00516.52
7.4.240.0020.00516.64
7.4.230.0020.00516.48
7.4.220.0070.01716.64
7.4.210.0090.00916.66
7.4.200.0030.00316.70
7.4.160.0150.00616.71
7.4.150.0110.01117.40
7.4.140.0130.00617.86
7.4.130.0080.00916.62
7.4.120.0090.00916.56
7.4.110.0070.01016.62
7.4.100.0110.00616.64
7.4.90.0100.00716.70
7.4.80.0050.01519.39
7.4.70.0090.00916.56
7.4.60.0080.00816.55
7.4.50.0030.00316.54
7.4.40.0130.00716.57
7.4.30.0130.00316.58
7.4.00.0060.00615.14
7.3.330.0030.00313.36
7.3.320.0110.00313.37
7.3.310.0030.00316.30
7.3.300.0000.00716.43
7.3.290.0080.00816.43
7.3.280.0110.00516.39
7.3.270.0090.00917.40
7.3.260.0100.00716.59
7.3.250.0110.01116.58
7.3.240.0120.00616.74
7.3.230.0180.00916.57
7.3.210.0130.00316.52
7.3.200.0110.00619.39
7.3.190.0120.00316.46
7.3.180.0100.00716.42
7.3.170.0100.00716.58
7.3.160.0040.01416.63
7.3.10.0100.00716.63
7.3.00.0080.00816.57
7.2.330.0070.01816.66
7.2.320.0090.01216.87
7.2.310.0030.01416.80
7.2.300.0130.00316.91
7.2.290.0120.00616.93
7.2.130.0070.01016.79
7.2.120.0080.01016.94
7.2.110.0110.01016.81
7.2.100.0040.01316.83
7.2.90.0070.00917.03
7.2.80.0070.01016.85
7.2.70.0110.00816.92
7.2.60.0090.00617.04
7.2.50.0090.00716.87
7.2.40.0080.00816.77
7.2.30.0100.00616.83
7.2.20.0070.01216.76
7.2.10.0040.01016.86
7.2.00.0090.00817.58
7.1.250.0050.00915.68
7.1.200.0030.01215.92
7.1.100.0070.00718.01
7.1.70.0030.00917.17
7.1.60.0130.01319.50
7.1.50.0060.01217.14
7.1.00.0070.07322.57
7.0.200.0320.00714.80
7.0.140.0030.06722.14
7.0.90.0070.04019.96
7.0.80.0030.06719.97
7.0.70.0070.04019.97
7.0.60.0100.03319.98
7.0.50.0130.04320.39
7.0.40.0000.05020.15
7.0.30.0030.04720.14
7.0.20.0130.06320.16
7.0.10.0100.07719.99
7.0.00.0070.08720.07
5.6.280.0000.07721.09
5.6.240.0030.04020.55
5.6.230.0030.04320.69
5.6.220.0030.04020.57
5.6.210.0070.04020.67
5.6.200.0030.04321.04
5.6.190.0000.05021.11
5.6.180.0070.03721.05
5.6.170.0000.07021.03
5.6.160.0100.04021.03
5.6.150.0100.08021.03
5.6.140.0030.07321.11
5.6.130.0070.04321.11
5.6.120.0100.07321.11
5.6.110.0130.07320.96
5.6.100.0070.04321.07
5.6.90.0100.08321.16
5.6.80.0170.07320.43
5.6.70.0130.04720.32
5.6.60.0100.07720.31
5.6.50.0070.08320.43
5.6.40.0070.04720.39
5.6.30.0030.07720.33
5.6.20.0030.05020.38
5.6.10.0000.05320.41
5.6.00.0070.05020.39
5.5.380.0070.03720.37
5.5.370.0030.04020.41
5.5.360.0070.05320.39
5.5.350.0030.04020.38
5.5.340.0070.05020.81
5.5.330.0000.04320.74
5.5.320.0100.06720.91
5.5.310.0070.04320.93
5.5.300.0130.07720.89
5.5.290.0070.05720.89
5.5.280.0130.06320.74
5.5.270.0030.06320.91
5.5.260.0130.04020.76
5.5.250.0130.07320.71
5.5.240.0230.04720.31
5.5.230.0070.04720.13
5.5.220.0130.07320.31
5.5.210.0100.08320.16
5.5.200.0100.04720.29
5.5.190.0030.08320.22
5.5.180.0070.08320.25
5.5.160.0030.08320.24
5.5.150.0030.08720.11
5.5.140.0070.04720.26
5.5.130.0070.04020.16
5.5.120.0000.04320.27
5.5.110.0000.05020.08
5.5.100.0030.06020.18
5.5.90.0100.06020.03
5.5.80.0200.06719.96
5.5.70.0130.07319.95
5.5.60.0070.05719.97
5.5.50.0030.07720.11
5.5.40.0030.05320.16
5.5.30.0200.06719.96
5.5.20.0100.07720.14
5.5.10.0070.07320.06
5.5.00.0100.04720.01
5.4.450.0100.04019.23
5.4.440.0130.07019.37
5.4.430.0100.04319.48
5.4.420.0100.07719.22
5.4.410.0000.09019.36
5.4.400.0070.07019.04
5.4.390.0030.07318.84
5.4.380.0100.08019.03
5.4.370.0070.04018.88
5.4.360.0030.08319.04
5.4.350.0070.07719.16
5.4.340.0070.05019.09
5.4.320.0030.06319.14
5.4.310.0070.03719.20
5.4.300.0100.07718.87
5.4.290.0130.06719.18
5.4.280.0100.07318.84
5.4.270.0000.04719.13
5.4.260.0070.07719.20
5.4.250.0030.05319.20
5.4.240.0030.08018.87
5.4.230.0070.08018.81
5.4.220.0170.07319.18
5.4.210.0100.07019.18
5.4.200.0100.04719.02
5.4.190.0100.07019.02
5.4.180.0000.05319.22
5.4.170.0070.04019.17
5.4.160.0100.04019.16
5.4.150.0070.07719.09
5.4.140.0000.05716.46
5.4.130.0100.07016.20
5.4.120.0130.06316.43
5.4.110.0070.06716.61
5.4.100.0130.06716.41
5.4.90.0070.06716.55
5.4.80.0070.06716.55
5.4.70.0070.05716.55
5.4.60.0000.04716.46
5.4.50.0100.07316.25
5.4.40.0000.04316.49
5.4.30.0030.05016.47
5.4.20.0100.04016.42
5.4.10.0170.05716.32
5.4.00.0100.04315.75
5.3.290.0070.03714.52
5.3.280.0100.06714.46
5.3.270.0070.08314.59
5.3.260.0100.07314.48
5.3.250.0170.06014.44
5.3.240.0100.05314.55
5.3.230.0000.06714.59
5.3.220.0000.05014.38
5.3.210.0030.07714.53
5.3.200.0100.04014.58
5.3.190.0100.07714.54
5.3.180.0130.07014.50
5.3.170.0130.06314.57
5.3.160.0100.03314.50
5.3.150.0070.03314.48
5.3.140.0130.06314.54
5.3.130.0030.04714.51
5.3.120.0070.03714.41
5.3.110.0100.07314.52
5.3.100.0130.03014.03
5.3.90.0030.07713.88
5.3.80.0170.03714.00
5.3.70.0070.04714.00
5.3.60.0030.05313.99
5.3.50.0130.03013.91
5.3.40.0030.05013.93
5.3.30.0100.07013.91
5.3.20.0070.04313.54
5.3.10.0070.05313.62
5.3.00.0070.07013.49
5.2.170.0100.05711.09
5.2.160.0030.06011.11
5.2.150.0070.06011.21
5.2.140.0070.06010.97
5.2.130.0000.07011.09
5.2.120.0100.04711.12
5.2.110.0070.06011.06
5.2.100.0070.05311.02
5.2.90.0070.06011.12
5.2.80.0070.03710.88
5.2.70.0370.03311.11
5.2.60.0030.06011.00
5.2.50.0070.03311.00
5.2.40.0070.06010.98
5.2.30.0030.03710.92
5.2.20.0030.06010.82
5.2.10.0100.05710.87
5.2.00.0030.06710.78
5.1.60.0030.04310.00
5.1.50.0030.05710.02
5.1.40.0070.0479.97
5.1.30.0070.04710.39
5.1.20.0070.02310.21
5.1.10.0030.03010.10
5.1.00.0070.0279.90
5.0.50.0030.0308.59
5.0.40.0100.0378.39
5.0.30.0070.0508.21
5.0.20.0030.0278.28
5.0.10.0000.0278.24
5.0.00.0030.0308.22
4.4.90.0000.0337.40
4.4.80.0100.0277.40
4.4.70.0030.0177.40
4.4.60.0070.0137.40
4.4.50.0070.0307.40
4.4.40.0070.0507.40
4.4.30.0030.0277.40
4.4.20.0000.0377.40
4.4.10.0030.0207.40
4.4.00.0070.0477.40
4.3.110.0030.0307.40
4.3.100.0070.0307.40
4.3.90.0070.0237.40
4.3.80.0030.0337.40
4.3.70.0070.0277.40
4.3.60.0030.0277.40
4.3.50.0070.0237.40
4.3.40.0070.0477.40
4.3.30.0030.0337.40
4.3.20.0030.0277.40
4.3.10.0070.0307.40
4.3.00.0030.0237.40

preferences:
49.84 ms | 401 KiB | 5 Q