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)); var_dump(json_encode($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)
8.3.60.0110.00716.50
8.3.50.0120.00317.91
8.3.40.0150.00018.98
8.3.30.0040.01119.04
8.3.20.0060.00320.20
8.3.10.0070.00021.73
8.3.00.0080.00019.26
8.2.180.0090.00618.66
8.2.170.0070.00722.96
8.2.160.0130.00320.47
8.2.150.0070.00424.18
8.2.140.0030.00524.66
8.2.130.0080.00026.16
8.2.120.0040.00419.40
8.2.110.0030.00619.42
8.2.100.0040.00818.00
8.2.90.0040.00419.42
8.2.80.0080.00017.97
8.2.70.0080.00017.75
8.2.60.0030.00518.05
8.2.50.0000.00818.07
8.2.40.0000.00820.07
8.2.30.0000.00718.14
8.2.20.0040.00417.88
8.2.10.0040.00418.27
8.2.00.0060.00317.93
8.1.280.0120.00625.92
8.1.270.0050.00319.12
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0050.00522.16
8.1.230.0060.00617.79
8.1.220.0000.00817.91
8.1.210.0080.00018.77
8.1.200.0030.00617.47
8.1.190.0080.00017.61
8.1.180.0040.00418.10
8.1.170.0040.00420.45
8.1.160.0050.00622.13
8.1.150.0070.00018.94
8.1.140.0070.00017.57
8.1.130.0030.00318.03
8.1.120.0050.00217.54
8.1.110.0000.00717.64
8.1.100.0050.00217.66
8.1.90.0000.00717.66
8.1.80.0050.00317.45
8.1.70.0080.00017.55
8.1.60.0030.00617.83
8.1.50.0000.00817.63
8.1.40.0040.00417.66
8.1.30.0040.00417.88
8.1.20.0080.00017.72
8.1.10.0080.00017.64
8.1.00.0060.00617.84
8.0.300.0070.00018.77
8.0.290.0070.00016.75
8.0.280.0070.00018.59
8.0.270.0040.00417.34
8.0.260.0000.00617.30
8.0.250.0040.00417.09
8.0.240.0040.00617.09
8.0.230.0040.00417.10
8.0.220.0000.00816.88
8.0.210.0030.00316.96
8.0.200.0060.00017.08
8.0.190.0080.00016.97
8.0.180.0000.00717.10
8.0.170.0080.00017.01
8.0.160.0040.00417.07
8.0.150.0040.00416.93
8.0.140.0050.00217.05
8.0.130.0080.00013.49
8.0.120.0000.00816.96
8.0.110.0070.00017.02
8.0.100.0020.00517.05
8.0.90.0040.00417.09
8.0.80.0110.00616.98
8.0.70.0000.00817.05
8.0.60.0000.00816.89
8.0.50.0000.00817.03
8.0.30.0160.00817.14
8.0.20.0080.01117.40
8.0.10.0030.00517.05
8.0.00.0070.01516.79
7.4.330.0030.00315.03
7.4.320.0070.00016.57
7.4.300.0050.00216.70
7.4.290.0070.00016.50
7.4.280.0040.00516.60
7.4.270.0030.00316.57
7.4.260.0100.00016.56
7.4.250.0040.00416.64
7.4.240.0050.00216.56
7.4.230.0040.00316.77
7.4.220.0140.01316.54
7.4.210.0120.00416.67
7.4.200.0030.00516.48
7.4.160.0090.00616.55
7.4.150.0070.01417.40
7.4.140.0080.01217.86
7.4.130.0130.00616.64
7.4.120.0100.00716.54
7.4.110.0120.00616.77
7.4.100.0070.01116.61
7.4.90.0090.00916.44
7.4.80.0110.00619.39
7.4.70.0060.01016.69
7.4.60.0100.00716.46
7.4.50.0040.00416.50
7.4.40.0100.01416.61
7.4.30.0030.02016.61
7.4.00.0080.00915.11
7.3.330.0060.00013.21
7.3.320.0130.00013.36
7.3.310.0040.00416.29
7.3.300.0000.00716.39
7.3.290.0090.00816.42
7.3.280.0050.01216.36
7.3.270.0060.01117.40
7.3.260.0090.00916.44
7.3.250.0200.00416.59
7.3.240.0110.00616.78
7.3.230.0150.00916.75
7.3.210.0070.01016.52
7.3.200.0140.00319.39
7.3.190.0120.00316.71
7.3.180.0070.01016.31
7.3.170.0110.00616.70
7.3.160.0120.00916.47
7.3.120.0030.00614.92
7.3.110.0070.01015.17
7.3.100.0090.00615.12
7.3.90.0070.00314.89
7.3.80.0080.00814.96
7.3.70.0070.01015.07
7.3.60.0030.01014.60
7.3.50.0060.00914.72
7.3.40.0120.00614.96
7.3.30.0070.00714.97
7.3.20.0040.01116.64
7.3.10.0040.00916.71
7.3.00.0030.00916.73
7.2.330.0060.01516.77
7.2.320.0120.00616.92
7.2.310.0060.00916.68
7.2.300.0060.01116.67
7.2.290.0110.00716.84
7.2.250.0110.00715.08
7.2.240.0000.01115.05
7.2.230.0090.00614.98
7.2.220.0060.01015.37
7.2.210.0060.00315.05
7.2.200.0090.00614.89
7.2.190.0030.01015.23
7.2.180.0040.00715.18
7.2.170.0030.01015.11
7.2.130.0090.00616.89
7.2.120.0130.00317.06
7.2.110.0040.00716.82
7.2.100.0000.01017.14
7.2.90.0060.00616.79
7.2.80.0000.01017.06
7.2.70.0030.00616.86
7.2.60.0070.00716.85
7.2.50.0060.00616.77
7.2.40.0050.00616.80
7.2.30.0030.00617.09
7.2.20.0030.00616.99
7.2.10.0040.00717.02
7.2.00.0090.00418.23
7.1.330.0000.01515.79
7.1.320.0070.01015.88
7.1.310.0030.01015.92
7.1.300.0030.00715.86
7.1.290.0030.01215.69
7.1.280.0070.00415.95
7.1.270.0100.00315.83
7.1.260.0000.00915.91
7.1.250.0040.00416.06
7.1.100.0000.01318.16
7.1.70.0050.00216.99
7.1.60.0140.01119.50
7.1.50.0210.01435.10
7.1.00.0070.07322.46
7.0.200.0190.00914.93
7.0.140.0070.07022.16
7.0.110.0100.07320.01
7.0.100.0100.08020.04
7.0.90.0030.06319.96
7.0.80.0070.08019.96
7.0.70.0130.08019.95
7.0.60.0070.04719.98
7.0.50.0170.07019.99
7.0.40.0070.05019.65
7.0.30.0030.08019.76
7.0.20.0100.05019.70
7.0.10.0070.05719.74
7.0.00.0070.07019.75
5.6.280.0030.07321.03
5.6.260.0070.08320.73
5.6.250.0030.05020.70
5.6.240.0130.07720.56
5.6.230.0030.08720.63
5.6.220.0130.07320.84
5.6.210.0030.08720.58
5.6.200.0070.07720.59
5.6.190.0070.07320.55
5.6.180.0130.07720.63
5.6.170.0130.07020.66
5.6.160.0100.08320.56
5.6.150.0000.08720.47
5.6.140.0030.08320.66
5.6.130.0000.05720.46
5.6.120.0030.05020.70
5.6.110.0200.07020.66
5.6.100.0200.07020.60
5.6.90.0070.05320.63
5.6.80.0100.07019.97
5.6.70.0100.06019.84
5.6.60.0070.07719.95
5.6.50.0170.06719.90
5.6.40.0070.04320.02
5.6.30.0200.06019.92
5.6.20.0130.06020.00
5.6.10.0130.04019.91
5.6.00.0100.07319.92
5.5.380.0030.09020.41
5.5.370.0000.05320.42
5.5.360.0030.08720.53
5.5.350.0100.07320.48
5.5.340.0130.07720.91
5.5.330.0130.07320.82
5.5.320.0100.05021.04
5.5.310.0070.08020.89
5.5.300.0070.08720.77
5.5.290.0030.08020.96
5.5.280.0070.05020.87
5.5.270.0170.07720.69
5.5.260.0000.09320.84
5.5.250.0030.05720.68
5.5.240.0100.07320.28
5.5.230.0100.04720.08
5.5.220.0070.08020.19
5.5.210.0000.08020.15
5.5.200.0030.08320.26
5.5.190.0070.05020.37
5.5.180.0070.08020.24
5.5.160.0130.07020.16
5.5.150.0070.07720.22
5.5.140.0130.07720.26
5.5.130.0070.07020.34
5.5.120.0000.08020.24
5.5.110.0130.08020.19
5.5.100.0070.07720.21
5.5.90.0000.08320.05
5.5.80.0070.04320.23
5.5.70.0100.04320.27
5.5.60.0070.07319.98
5.5.50.0070.07720.14
5.5.40.0030.08020.00
5.5.30.0130.06320.01
5.5.20.0170.07020.14
5.5.10.0100.04320.18
5.5.00.0070.07720.19
5.4.450.0100.04319.32
5.4.440.0070.07319.66
5.4.430.0100.03719.65
5.4.420.0100.04719.31
5.4.410.0070.08319.13
5.4.400.0070.07319.02
5.4.390.0030.07019.31
5.4.380.0000.08019.34
5.4.370.0070.08019.03
5.4.360.0070.07719.09
5.4.350.0170.07019.00
5.4.340.0100.06019.01
5.4.320.0070.05719.24
5.4.310.0070.07319.02
5.4.300.0070.07719.22
5.4.290.0100.07719.18
5.4.280.0030.09018.99
5.4.270.0170.06719.39
5.4.260.0070.08019.14
5.4.250.0100.07318.95
5.4.240.0170.07318.98
5.4.230.0130.06319.20
5.4.220.0030.05719.18
5.4.210.0100.07019.17
5.4.200.0030.04719.01
5.4.190.0070.07718.99
5.4.180.0130.04019.33
5.4.170.0070.08019.07
5.4.160.0030.08019.22
5.4.150.0000.08018.98
5.4.140.0070.06316.65
5.4.130.0070.06316.38
5.4.120.0030.04716.68
5.4.110.0100.07016.27
5.4.100.0030.07016.31
5.4.90.0100.04016.52
5.4.80.0070.04716.63
5.4.70.0070.06716.46
5.4.60.0070.07316.29
5.4.50.0100.07016.63
5.4.40.0070.07716.62
5.4.30.0170.04716.45
5.4.20.0130.07016.49
5.4.10.0030.05316.41
5.4.00.0070.07315.83
5.3.290.0070.07714.61
5.3.280.0070.08314.70
5.3.270.0100.07014.51
5.3.260.0070.07314.60
5.3.250.0100.07014.47
5.3.240.0070.07314.51
5.3.230.0130.07014.54
5.3.220.0170.06714.45
5.3.210.0100.07314.47
5.3.200.0100.06714.49
5.3.190.0100.07014.36
5.3.180.0100.07014.49
5.3.170.0070.07314.39
5.3.160.0170.06014.58
5.3.150.0100.07014.57
5.3.140.0030.06714.55
5.3.130.0070.06314.62
5.3.120.0130.07014.48
5.3.110.0000.08314.34
5.3.100.0200.03313.83
5.3.90.0070.03313.93
5.3.80.0070.06014.04
5.3.70.0100.04313.80
5.3.60.0070.04013.84
5.3.50.0070.03313.84
5.3.40.0000.04313.83
5.3.30.0100.03013.92
5.3.20.0000.03713.61
5.3.10.0100.03313.67
5.3.00.0100.03013.65
5.2.170.0030.05011.88
5.2.160.0000.03011.88
5.2.150.0100.04011.88
5.2.140.0100.02711.88
5.2.130.0000.03011.88
5.2.120.0000.03011.88
5.2.110.0000.06311.88
5.2.100.0000.03011.88
5.2.90.0000.03311.88
5.2.80.0000.03011.88
5.2.70.0000.02711.88
5.2.60.0030.04011.88
5.2.50.0030.02711.88
5.2.40.0030.05311.88
5.2.30.0030.02311.88
5.2.20.0070.02011.88
5.2.10.0030.03711.88
5.2.00.0000.03011.88
5.1.60.0000.03311.88
5.1.50.0000.02711.88
5.1.40.0030.03011.88
5.1.30.0030.03311.88
5.1.20.0000.02711.88
5.1.10.0030.03311.88
5.1.00.0100.01711.88
5.0.50.0030.01711.88
5.0.40.0000.02311.88
5.0.30.0030.03311.88
5.0.20.0000.02011.88
5.0.10.0030.01711.88
5.0.00.0000.03011.88
4.4.90.0030.02011.88
4.4.80.0000.03011.88
4.4.70.0000.02311.88
4.4.60.0070.00711.88
4.4.50.0000.01711.88
4.4.40.0000.03311.88
4.4.30.0030.02711.88
4.4.20.0000.01711.88
4.4.10.0000.01711.88
4.4.00.0000.03711.88
4.3.110.0030.02311.88
4.3.100.0000.01711.88
4.3.90.0030.01311.88
4.3.80.0000.02711.88
4.3.70.0030.01311.88
4.3.60.0030.01711.88
4.3.50.0000.03011.88
4.3.40.0000.02311.88
4.3.30.0000.01311.88
4.3.20.0000.01711.88
4.3.10.0000.02011.88
4.3.00.0000.01711.88

preferences:
46.32 ms | 400 KiB | 5 Q