3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!function_exists('json_encode')) { function json_encode($it) { if (!($assoc = is_object($it)) && !is_array($it)) { return _js_enc_value($it); } $i = 0; if (!$assoc) { foreach ($it as $k => $v) { if ($k !== $i) { $assoc = true; break; } $i++; } } $data = array(); foreach ($it as $k => $v) { $v = _js_enc_value($v); if ($assoc) { $k = '"'. addcslashes($k, '"\\') . '"'; $data[] = $k . ':' . $v; } else { $data[] = $v; } } if ($assoc) { $spl = '{'; $spr = '}'; } else { $spl = '['; $spr = ']'; } return $spl . implode(',', $data) . $spr; } function _js_enc_value($value) { switch (true) { case is_array($value): case is_object($value): return json_encode($value); case is_bool($value): return $value ? 'true' : 'false'; case $value === null: case is_resource($value) && _js_error(): return 'null'; case is_string($value): return '"' . _js_uc_esc($value) . '"'; default: return $value; } } function _js_error() { return trigger_error('json_encode(): type is unsupported, encoded as null', E_USER_WARNING); } function _js_uc_esc($value) { $pattern = "/\r|(\n)|((?:[^\x09\x0A\x0D\x20-\x7E]{3})+)/"; return preg_replace_callback($pattern, '_js_uc_esc_cb', $value); } function _js_uc_esc_cb($matches) { switch (true) { case isset($matches[2]): $char = mb_convert_encoding($matches[2], 'UTF-16', 'UTF-8'); $str = ''; $len = strlen($char); for ($i = 0; $i < $len; $i += 2) { $str .= sprintf('\\u%02x%02x', ord($char[$i]), ord($char[$i + 1])); } return $str; case isset($matches[1]): return '\\n'; default: return '\\r'; } } } $fp = fopen('php://stdin', 'r'); $json = json_encode(array('a' => 'foo', 'b' => $fp)); var_dump($json);

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)
8.3.60.0150.00416.38
8.3.50.0090.00717.60
8.3.40.0060.00918.75
8.3.30.0040.01118.78
8.3.20.0040.00418.82
8.3.10.0060.00320.54
8.3.00.0030.00619.38
8.2.180.0090.00616.88
8.2.170.0120.00322.96
8.2.160.0070.00719.34
8.2.150.0060.00324.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0080.00019.48
8.2.110.0030.00720.52
8.2.100.0120.00017.97
8.2.90.0030.00617.75
8.2.80.0000.00817.97
8.2.70.0080.00018.05
8.2.60.0040.00417.93
8.2.50.0070.00319.64
8.2.40.0030.00520.42
8.2.30.0060.00318.24
8.2.20.0040.00417.85
8.2.10.0020.00517.97
8.2.00.0040.00417.74
8.1.280.0150.00025.92
8.1.270.0040.00424.66
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0060.00322.06
8.1.230.0080.00420.27
8.1.220.0040.00417.77
8.1.210.0050.00318.77
8.1.200.0120.00017.22
8.1.190.0060.00317.23
8.1.180.0060.00318.10
8.1.170.0050.00318.64
8.1.160.0000.00718.98
8.1.150.0040.00418.73
8.1.140.0000.00717.50
8.1.130.0000.00717.79
8.1.120.0050.00517.49
8.1.110.0040.00417.54
8.1.100.0040.00417.40
8.1.90.0070.00017.39
8.1.80.0000.00717.51
8.1.70.0020.00517.50
8.1.60.0040.00417.54
8.1.50.0000.00817.40
8.1.40.0080.00017.56
8.1.30.0040.00417.71
8.1.20.0030.00617.65
8.1.10.0030.00517.56
8.1.00.0060.00617.51
8.0.300.0070.00019.76
8.0.290.0000.00816.75
8.0.280.0000.00818.56
8.0.270.0030.00317.32
8.0.260.0000.00616.95
8.0.250.0000.00717.01
8.0.240.0060.00317.08
8.0.230.0050.00316.95
8.0.220.0000.00717.02
8.0.210.0000.00716.91
8.0.200.0030.00516.95
8.0.190.0040.00417.04
8.0.180.0000.00717.09
8.0.170.0070.00317.00
8.0.160.0070.00017.09
8.0.150.0070.00316.95
8.0.140.0000.00816.84
8.0.130.0000.00613.48
8.0.120.0070.00016.84
8.0.110.0050.00316.99
8.0.100.0070.00016.99
8.0.90.0040.00416.99
8.0.80.0030.01817.08
8.0.70.0070.00016.96
8.0.60.0000.00816.88
8.0.50.0070.00017.04
8.0.30.0090.01017.15
8.0.20.0060.01317.36
8.0.10.0040.00416.97
8.0.00.0080.01316.80
7.4.330.0050.00012.98
7.4.320.0100.00016.57
7.4.300.0050.00216.55
7.4.290.0040.00416.66
7.4.280.0030.00516.51
7.4.270.0070.00016.48
7.4.260.0000.00513.33
7.4.250.0000.00916.34
7.4.240.0070.00016.41
7.4.230.0000.00716.44
7.4.220.0130.01316.56
7.4.210.0080.00916.58
7.4.200.0030.00316.38
7.4.190.0030.00516.54
7.4.160.0190.00316.38
7.4.150.0150.00316.57
7.4.140.0130.00516.58
7.4.130.0120.00716.45
7.4.120.0140.00316.59
7.4.110.0070.01016.48
7.4.100.0170.00016.55
7.4.90.0120.00616.44
7.4.80.0130.00616.62
7.4.70.0070.01116.73
7.4.60.0060.01216.39
7.4.50.0030.00616.28
7.4.40.0030.01316.49
7.4.30.0110.00816.61
7.4.00.0000.01515.01
7.3.330.0000.00613.41
7.3.320.0000.00613.28
7.3.310.0000.00716.46
7.3.300.0000.00716.30
7.3.290.0110.00316.39
7.3.280.0050.01216.43
7.3.270.0100.00716.56
7.3.260.0050.01216.42
7.3.250.0110.00716.48
7.3.240.0090.01216.58
7.3.230.0110.01016.54
7.3.210.0100.00716.54
7.3.200.0080.01119.39
7.3.190.0090.01316.68
7.3.180.0060.01016.54
7.3.170.0130.00616.25
7.3.160.0100.00616.44
7.3.120.0080.00814.94
7.2.330.0070.01016.74
7.2.320.0090.00916.46
7.2.310.0100.01016.73
7.2.300.0140.00316.48
7.2.290.0070.01016.75
7.2.110.0340.00316.44
7.2.00.0130.00619.18
7.1.100.0000.01717.97
7.1.70.0000.00817.15
7.1.60.0110.01419.40
7.1.50.0110.01416.71
7.1.00.0030.03322.29
7.0.200.0230.00314.87
7.0.140.0000.07722.18
7.0.120.0000.07722.13
7.0.90.0130.08019.92
7.0.80.0170.08020.00
7.0.70.0070.04320.18
7.0.60.0030.04319.98
7.0.50.0070.05320.39
7.0.40.0100.05720.08
7.0.30.0100.04020.10
7.0.20.0030.04320.07
7.0.10.0070.05719.99
7.0.00.0030.05320.14
5.6.280.0070.07320.84
5.6.240.0170.07320.65
5.6.230.0130.07720.52
5.6.220.0030.06020.69
5.6.210.0100.07720.66
5.6.200.0030.05021.07
5.6.190.0100.05021.06
5.6.180.0130.03321.13
5.6.170.0000.05321.08
5.6.160.0130.04320.99
5.6.150.0030.04321.10
5.6.140.0030.04021.04
5.6.130.0000.04721.09
5.6.120.0070.05721.08
5.6.110.0070.04321.07
5.6.100.0030.04720.96
5.6.90.0000.09021.02
5.6.80.0130.06020.48
5.6.70.0000.04320.53
5.6.60.0030.05020.46
5.6.50.0030.04020.50
5.6.40.0000.04320.40
5.6.30.0070.06020.38
5.6.20.0030.04320.30
5.6.10.0000.04320.45
5.6.00.0030.04020.31
5.5.380.0130.07720.37
5.5.370.0000.08720.55
5.5.360.0070.05320.36
5.5.350.0100.04020.50
5.5.340.0030.08720.86
5.5.330.0130.07720.88
5.5.320.0100.06320.78
5.5.310.0000.04720.81
5.5.300.0100.03320.75
5.5.290.0100.03320.75
5.5.280.0030.04020.93
5.5.270.0000.09020.90
5.5.260.0030.09020.87
5.5.250.0000.07320.76
5.5.240.0070.05320.32
5.5.230.0070.03720.18
5.5.220.0030.03720.32
5.5.210.0000.05320.25
5.5.200.0030.03720.26
5.5.190.0000.04020.10
5.5.180.0100.06020.26
5.5.160.0030.04020.15
5.5.150.0070.03720.28
5.5.140.0030.04320.17
5.5.130.0000.04320.12
5.5.120.0070.04720.21
5.5.110.0030.04020.10
5.5.100.0030.04020.20
5.5.90.0000.03720.03
5.5.80.0000.04020.11
5.5.70.0070.03720.08
5.5.60.0070.03320.16
5.5.50.0070.03720.16
5.5.40.0100.03720.06
5.5.30.0030.04020.04
5.5.20.0070.07320.16
5.5.10.0070.06020.13
5.5.00.0030.07020.04
5.4.450.0070.03719.47
5.4.440.0070.03719.18
5.4.430.0100.04319.22
5.4.420.0070.07319.45
5.4.410.0070.03319.43
5.4.400.0000.04018.88
5.4.390.0070.03318.90
5.4.380.0030.07319.04
5.4.370.0130.05319.18
5.4.360.0030.04019.23
5.4.350.0030.03719.18
5.4.340.0000.04019.12
5.4.320.0030.05019.18
5.4.310.0030.04018.88
5.4.300.0030.04319.22
5.4.290.0030.04018.87
5.4.280.0030.04719.04
5.4.270.0070.03019.04
5.4.260.0030.03719.04
5.4.250.0070.03318.93
5.4.240.0030.03719.04
5.4.230.0000.04019.18
5.4.220.0030.03719.04
5.4.210.0030.04018.84
5.4.200.0100.04018.92
5.4.190.0030.03719.16
5.4.180.0030.07318.86
5.4.170.0000.08718.89
5.4.160.0100.04018.86
5.4.150.0030.05018.95
5.4.140.0170.06016.42
5.4.130.0030.06716.43
5.4.120.0000.07716.43
5.4.110.0030.07716.46
5.4.100.0130.07016.50
5.4.90.0100.07316.55
5.4.80.0000.05716.38
5.4.70.0100.07016.50
5.4.60.0030.07316.34
5.4.50.0070.07316.45
5.4.40.0030.08016.41
5.4.30.0100.07316.47
5.4.20.0070.06716.46
5.4.10.0030.05016.38
5.4.00.0070.07715.86
5.3.290.0130.06714.80
5.3.280.0030.03714.69
5.3.270.0130.06314.59
5.3.260.0030.08014.63
5.3.250.0100.07014.65
5.3.240.0070.07714.58
5.3.230.0070.04014.69
5.3.220.0070.06714.60
5.3.210.0100.07314.63
5.3.200.0070.06314.63
5.3.190.0130.06714.70
5.3.180.0100.05714.73
5.3.170.0000.07014.64
5.3.160.0100.04014.54
5.3.150.0070.03314.62
5.3.140.0070.06314.58
5.3.130.0030.06714.53
5.3.120.0130.05314.61
5.3.110.0070.08014.64
5.3.100.0030.07714.07
5.3.90.0070.07014.16
5.3.80.0000.05714.13
5.3.70.0000.08314.03
5.3.60.0070.06714.04
5.3.50.0070.07314.04
5.3.40.0100.07313.99
5.3.30.0100.03313.82
5.3.20.0030.07713.64
5.3.10.0030.07313.66
5.3.00.0030.06313.59
5.2.170.0070.06311.17
5.2.160.0030.06311.19
5.2.150.0030.04311.11
5.2.140.0030.06011.09
5.2.130.0030.06311.04
5.2.120.0030.04311.05
5.2.110.0070.05711.07
5.2.100.0000.05311.02
5.2.90.0070.06311.15
5.2.80.0000.06011.23
5.2.70.0100.05311.21
5.2.60.0070.04711.10
5.2.50.0070.05311.07
5.2.40.0100.05711.09
5.2.30.0100.06010.93
5.2.20.0030.05711.11
5.2.10.0070.05710.90
5.2.00.0030.06010.75
5.1.60.0030.03710.12
5.1.50.0030.03010.09
5.1.40.0070.03310.04
5.1.30.0030.03010.28
5.1.20.0000.04010.39
5.1.10.0130.02710.21
5.1.00.0000.0379.99
5.0.50.0070.0338.68
5.0.40.0070.0408.59
5.0.30.0030.0478.33
5.0.20.0000.0378.09
5.0.10.0000.0438.06
5.0.00.0070.0438.09
4.4.90.0000.0377.07
4.4.80.0030.0307.07
4.4.70.0000.0377.07
4.4.60.0000.0337.07
4.4.50.0100.0307.07
4.4.40.0070.0537.07
4.4.30.0030.0177.07
4.4.20.0070.0337.07
4.4.10.0030.0337.07
4.4.00.0030.0477.07
4.3.110.0000.0277.07
4.3.100.0000.0377.07
4.3.90.0030.0307.07
4.3.80.0070.0507.07
4.3.70.0030.0277.07
4.3.60.0000.0237.07
4.3.50.0000.0337.07
4.3.40.0000.0537.07
4.3.30.0030.0377.07
4.3.20.0030.0337.07
4.3.10.0000.0337.07
4.3.00.0000.0307.07

preferences:
36.44 ms | 401 KiB | 5 Q