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; $it = (array)$it; 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) { $k = _js_enc_value((string)$k); $data[] = $k . ':' . $v; } else { $data[] = $v; } } if ($assoc) { $bl = '{'; $br = '}'; } else { $bl = '['; $br = ']'; } return $bl . implode(',', $data) . $br; } function _js_enc_value($value) { switch (true) { case is_array($value): case is_object($value): return json_encode($value); case $value === null: case is_resource($value): return 'null'; case is_bool($value): return $value ? 'true' : 'false'; case is_string($value): return '"' . _js_uc_esc($value) . '"'; default: return $value; } } function _js_uc_esc($value) { $pattern = "@[\x08-\x10\x0c\x0d\\\\\"/]|([^\x08-\x10\x0c\x0d\x20-\x7f\\\\\"/])++@u"; return preg_replace_callback($pattern, '_js_uc_esc_cb', $value); } function _js_uc_esc_cb($matches) { switch (true) { case isset($matches[1]): $char = mb_convert_encoding($matches[0], '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 $str; default: return addcslashes($matches[0], "\x08\x09\x10\x0c\x0d\\\"/"); } } } $var = array( array( 'text', 1, 1.1, true, false, null, array(), new stdClass, ), array( '&\'/"' => "\r\n\t", ), array( '0' => 'hoge', '1' => 'foo', ), (object)array( '0' => 'hoge', '1' => 'foo', ), array( '0' => 'hoge', '2' => 'foo', ), (object)array( '0' => 'hoge', '2' => 'foo', ), ); var_dump(@json_encode($var));

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)
8.3.60.0110.00718.43
8.3.50.0120.00921.95
8.3.40.0090.00618.98
8.3.30.0130.00319.09
8.3.20.0070.00020.34
8.3.10.0050.00323.70
8.3.00.0000.00822.34
8.2.180.0090.00616.88
8.2.170.0110.00722.96
8.2.160.0080.00620.97
8.2.150.0040.00424.18
8.2.140.0030.00624.66
8.2.130.0080.00026.16
8.2.120.0050.00319.48
8.2.110.0100.00021.17
8.2.100.0120.00018.03
8.2.90.0030.00619.24
8.2.80.0060.00317.97
8.2.70.0040.00417.63
8.2.60.0080.00017.93
8.2.50.0080.00418.10
8.2.40.0000.00818.03
8.2.30.0080.00018.00
8.2.20.0000.00717.67
8.2.10.0040.00419.51
8.2.00.0040.00417.93
8.1.280.0090.00925.92
8.1.270.0060.00323.73
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0050.00522.70
8.1.230.0090.00317.67
8.1.220.0050.00317.74
8.1.210.0120.00018.77
8.1.200.0000.00917.22
8.1.190.0050.00317.35
8.1.180.0000.00818.10
8.1.170.0000.00918.64
8.1.160.0000.00721.94
8.1.150.0080.00018.57
8.1.140.0070.00017.59
8.1.130.0040.00417.84
8.1.120.0030.00317.42
8.1.110.0030.00617.49
8.1.100.0000.01117.35
8.1.90.0040.00417.42
8.1.80.0040.00417.51
8.1.70.0030.00317.51
8.1.60.0060.00317.52
8.1.50.0060.00317.59
8.1.40.0000.00917.45
8.1.30.0030.00617.69
8.1.20.0050.00317.53
8.1.10.0000.00817.56
8.1.00.0090.00017.61
8.0.300.0040.00418.77
8.0.290.0040.00416.88
8.0.280.0030.00318.41
8.0.270.0070.00017.23
8.0.260.0050.00316.81
8.0.250.0030.00316.94
8.0.240.0000.00717.07
8.0.230.0060.00317.06
8.0.220.0070.00016.96
8.0.210.0000.00716.85
8.0.200.0030.00317.08
8.0.190.0000.00717.01
8.0.180.0080.00017.01
8.0.170.0080.00017.02
8.0.160.0000.00717.06
8.0.150.0070.00016.89
8.0.140.0000.00717.00
8.0.130.0000.00613.46
8.0.120.0000.00816.97
8.0.110.0040.00416.92
8.0.100.0000.00717.12
8.0.90.0040.00417.08
8.0.80.0140.00316.89
8.0.70.0000.00817.01
8.0.60.0040.00417.07
8.0.50.0040.00416.83
8.0.30.0180.00217.24
8.0.20.0070.01217.40
8.0.10.0050.00217.13
8.0.00.0070.01216.81
7.4.330.0000.00515.08
7.4.320.0030.00316.48
7.4.300.0000.00616.70
7.4.290.0040.00416.70
7.4.280.0030.00316.64
7.4.270.0070.00016.75
7.4.260.0040.00416.68
7.4.250.0040.00416.50
7.4.240.0030.00416.66
7.4.230.0000.00716.55
7.4.220.0120.00616.68
7.4.210.0040.01116.65
7.4.200.0000.00716.43
7.4.190.0040.00416.80
7.4.160.0120.00616.70
7.4.150.0030.01417.40
7.4.140.0060.01117.86
7.4.130.0140.00416.44
7.4.120.0150.00316.49
7.4.110.0100.00716.53
7.4.100.0110.00716.50
7.4.90.0080.01016.69
7.4.80.0160.00616.55
7.4.70.0070.01016.39
7.4.60.0160.00016.52
7.4.50.0030.00316.49
7.4.40.0100.00322.77
7.4.30.0030.01416.43
7.4.00.0100.00315.17
7.3.330.0030.00313.21
7.3.320.0050.00013.36
7.3.310.0030.00316.47
7.3.300.0000.00716.41
7.3.290.0110.00816.34
7.3.280.0070.00916.33
7.3.270.0060.01217.40
7.3.260.0120.01216.54
7.3.250.0080.01016.33
7.3.240.0140.00516.71
7.3.230.0000.01616.54
7.3.210.0070.01716.50
7.3.200.0060.01319.39
7.3.190.0030.01916.61
7.3.180.0060.01216.25
7.3.170.0080.01216.41
7.3.160.0080.00916.43
7.3.120.0080.00414.80
7.2.330.0160.00416.46
7.2.320.0110.00816.71
7.2.310.0030.01416.79
7.2.300.0150.00616.38
7.2.290.0120.00416.38
7.2.00.0030.00619.06
7.1.100.0100.00318.23
7.1.70.0090.00017.08
7.1.60.0110.01419.24
7.1.50.0240.01434.73
7.1.00.0130.06722.43
7.0.200.0070.01116.82
7.0.140.0000.07722.20
7.0.90.0030.05019.98
7.0.80.0130.03319.95
7.0.70.0070.04319.89
7.0.60.0000.04319.92
7.0.50.0400.06320.42
7.0.40.0030.07720.10
7.0.30.0070.04020.13
7.0.20.0030.04319.99
7.0.10.0030.04720.10
7.0.00.0000.05020.17
5.6.280.0000.07721.12
5.6.240.0030.06020.71
5.6.230.0100.03720.52
5.6.220.0030.04320.64
5.6.210.0070.03720.69
5.6.200.0000.09321.16
5.6.190.0030.05021.05
5.6.180.0030.05721.10
5.6.170.0100.03721.13
5.6.160.0000.05021.07
5.6.150.0030.04721.06
5.6.140.0030.04721.04
5.6.130.0070.04321.13
5.6.120.0030.04321.01
5.6.110.0130.03721.09
5.6.100.0070.03721.04
5.6.90.0100.03720.93
5.6.80.0070.03720.44
5.6.70.0030.04020.50
5.6.60.0130.03020.41
5.6.50.0030.04020.36
5.6.40.0030.04020.45
5.6.30.0100.03320.33
5.6.20.0070.03720.39
5.6.10.0030.05020.45
5.6.00.0000.04320.38
5.5.380.0030.04320.41
5.5.370.0070.04320.60
5.5.360.0100.03720.36
5.5.350.0030.04720.43
5.5.340.0030.03320.79
5.5.330.0100.06320.90
5.5.320.0030.04320.92
5.5.310.0030.04020.77
5.5.300.0070.04020.88
5.5.290.0170.03020.89
5.5.280.0030.08020.75
5.5.270.0030.04320.80
5.5.260.0030.04320.79
5.5.250.0030.04020.61
5.5.240.0070.03720.14
5.5.230.0100.03320.04
5.5.220.0030.04320.18
5.5.210.0070.03720.04
5.5.200.0070.03720.17
5.5.190.0070.03720.17
5.5.180.0000.04320.23
5.5.160.0070.07320.10
5.5.150.0100.03720.16
5.5.140.0100.07320.22
5.5.130.0170.07020.25
5.5.120.0170.04020.29
5.5.110.0070.08320.12
5.5.100.0100.07320.13
5.5.90.0130.07020.12
5.5.80.0000.05019.99
5.5.70.0000.05020.18
5.5.60.0030.06020.07
5.5.50.0030.05720.13
5.5.40.0130.04020.16
5.5.30.0130.04720.11
5.5.20.0100.08020.10
5.5.10.0000.05320.00
5.5.00.0130.06720.09
5.4.450.0030.04319.35
5.4.440.0000.05719.35
5.4.430.0000.08019.35
5.4.420.0000.04319.55
5.4.410.0030.04019.04
5.4.400.0030.03719.24
5.4.390.0030.04019.05
5.4.380.0030.03319.09
5.4.370.0070.03718.98
5.4.360.0000.05019.14
5.4.350.0030.04019.03
5.4.340.0030.05019.16
5.4.320.0100.08019.13
5.4.310.0100.04719.18
5.4.300.0030.06019.08
5.4.290.0030.08019.20
5.4.280.0100.05019.09
5.4.270.0170.07019.03
5.4.260.0100.07319.18
5.4.250.0100.05319.15
5.4.240.0070.07319.02
5.4.230.0030.07319.04
5.4.220.0070.08018.94
5.4.210.0100.07319.20
5.4.200.0000.07718.84
5.4.190.0130.07019.04
5.4.180.0200.06319.13
5.4.170.0030.05019.22
5.4.160.0030.05019.02
5.4.150.0000.08319.01
5.4.140.0100.07016.35
5.4.130.0130.06316.46
5.4.120.0170.06316.41
5.4.110.0100.06716.50
5.4.100.0030.07316.49
5.4.90.0030.03716.48
5.4.80.0070.07316.40
5.4.70.0070.05016.46
5.4.60.0070.07016.48
5.4.50.0130.06716.30
5.4.40.0030.07316.45
5.4.30.0100.06016.33
5.4.20.0030.07316.25
5.4.10.0030.04716.38
5.4.00.0130.05315.75
5.3.290.0170.06714.70
5.3.280.0070.07314.71
5.3.270.0070.05314.65
5.3.260.0030.05314.61
5.3.250.0100.07314.55
5.3.240.0130.04314.56
5.3.230.0130.07014.62
5.3.220.0000.04714.65
5.3.210.0100.04014.66
5.3.200.0070.07314.54
5.3.190.0030.03714.54
5.3.180.0170.07014.62
5.3.170.0100.07314.60
5.3.160.0030.08014.73
5.3.150.0130.07014.52
5.3.140.0070.08014.51
5.3.130.0030.07714.59
5.3.120.0100.07014.71
5.3.110.0230.06714.70
5.3.100.0070.05714.07
5.3.90.0070.04313.98
5.3.80.0070.04014.10
5.3.70.0000.04014.09
5.3.60.0070.06713.96
5.3.50.0030.07313.89
5.3.40.0070.05013.87
5.3.30.0070.08014.08
5.3.20.0070.06313.70
5.3.10.0070.05013.70
5.3.00.0070.06313.64
5.2.170.0070.06711.07
5.2.160.0130.05711.06
5.2.150.0070.05011.21
5.2.140.0000.06311.18
5.2.130.0030.06011.22
5.2.120.0100.05311.25
5.2.110.0030.05011.02
5.2.100.0030.06311.27
5.2.90.0030.05311.24
5.2.80.0030.03711.05
5.2.70.0030.05311.05
5.2.60.0070.03711.13
5.2.50.0070.06010.94
5.2.40.0000.04711.05
5.2.30.0070.02710.90
5.2.20.0270.03710.85
5.2.10.0100.05710.95
5.2.00.0070.05710.89
5.1.60.0070.04310.02
5.1.50.0000.05710.08
5.1.40.0100.04710.12
5.1.30.0070.05010.49
5.1.20.0030.05710.55
5.1.10.0100.05010.23
5.1.00.0130.04710.11
5.0.50.0030.0438.68
5.0.40.0030.0208.58
5.0.30.0000.0608.28
5.0.20.0030.0438.26
5.0.10.0000.0278.32
5.0.00.0030.0438.25
4.4.90.0000.0377.24
4.4.80.0030.0337.24
4.4.70.0000.0307.24
4.4.60.0070.0137.24
4.4.50.0030.0377.24
4.4.40.0000.0577.24
4.4.30.0030.0307.24
4.4.20.0030.0337.24
4.4.10.0100.0207.24
4.4.00.0030.0337.24
4.3.110.0030.0137.24
4.3.100.0070.0307.24
4.3.90.0000.0377.24
4.3.80.0000.0577.24
4.3.70.0000.0277.24
4.3.60.0100.0237.24
4.3.50.0000.0307.24
4.3.40.0000.0537.24
4.3.30.0030.0337.24
4.3.20.0030.0237.24
4.3.10.0030.0137.24
4.3.00.0030.0307.24

preferences:
57.57 ms | 401 KiB | 5 Q