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; } $i++; } } var_dump($assoc); $data = array(); foreach ($it as $k => $v) { $v = _js_enc_value($v); if ($assoc) { $k = _js_enc_value($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) { $pattern = "@[\x08-\x10\x0c\x0d\\\\\"/]|([^\x08-\x10\x0c\x0d\x32-\x7f\\\\\"/])++@"; return preg_replace_callback($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)); */ var_dump(json_encode('1')); //var_dump(_js_enc_value('1'));

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)
8.3.60.0000.01416.75
8.3.50.0130.00317.55
8.3.40.0140.00718.71
8.3.30.0070.00718.54
8.3.20.0080.00018.73
8.3.10.0040.00418.55
8.3.00.0080.00019.13
8.2.180.0040.01118.29
8.2.170.0110.00722.96
8.2.160.0070.00720.58
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0070.00022.13
8.2.110.0030.00620.99
8.2.100.0090.00317.72
8.2.90.0030.00619.34
8.2.80.0080.00019.42
8.2.70.0030.00617.60
8.2.60.0090.00017.90
8.2.50.0000.00818.07
8.2.40.0080.00017.91
8.2.30.0000.00818.01
8.2.20.0000.00717.74
8.2.10.0060.00317.75
8.2.00.0000.00717.60
8.1.280.0100.01025.92
8.1.270.0040.00424.66
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0060.00323.77
8.1.230.0090.00321.07
8.1.220.0050.00317.74
8.1.210.0000.00819.15
8.1.200.0060.00317.23
8.1.190.0000.00817.53
8.1.180.0000.00818.10
8.1.170.0080.00018.86
8.1.160.0030.00518.89
8.1.150.0000.00818.51
8.1.140.0040.00417.41
8.1.130.0000.00717.73
8.1.120.0040.00417.34
8.1.110.0040.00417.36
8.1.100.0070.00017.53
8.1.90.0040.00417.41
8.1.80.0070.00017.35
8.1.70.0050.00317.41
8.1.60.0030.00617.57
8.1.50.0050.00317.47
8.1.40.0030.00517.51
8.1.30.0000.00817.55
8.1.20.0000.00817.50
8.1.10.0030.00517.38
8.1.00.0040.00417.30
8.0.300.0000.00820.06
8.0.290.0040.00416.75
8.0.280.0040.00318.45
8.0.270.0030.00317.17
8.0.260.0000.00716.82
8.0.250.0030.00617.00
8.0.240.0070.00016.95
8.0.230.0040.00416.99
8.0.220.0030.00316.94
8.0.210.0000.00716.91
8.0.200.0030.00316.99
8.0.190.0000.00716.99
8.0.180.0100.00016.90
8.0.170.0030.00616.83
8.0.160.0040.00417.00
8.0.150.0060.00316.82
8.0.140.0080.00516.86
8.0.130.0000.00513.25
8.0.120.0040.00416.88
8.0.110.0040.00416.67
8.0.100.0040.00416.79
8.0.90.0000.00716.95
8.0.80.0170.00316.93
8.0.70.0040.00416.91
8.0.60.0000.00816.75
8.0.50.0020.00516.72
8.0.30.0150.00616.95
8.0.20.0070.01216.86
8.0.10.0050.00216.90
8.0.00.0100.00916.80
7.4.330.0000.00612.90
7.4.320.0000.00616.52
7.4.300.0060.00016.50
7.4.290.0100.00016.50
7.4.280.0030.00516.52
7.4.270.0040.00416.58
7.4.260.0000.00513.23
7.4.250.0000.01016.50
7.4.240.0070.00016.40
7.4.230.0000.00716.32
7.4.220.0000.01916.49
7.4.210.0120.00516.48
7.4.200.0030.00316.47
7.4.190.0050.00316.62
7.4.160.0110.00416.63
7.4.150.0070.01116.45
7.4.140.0040.01216.53
7.4.130.0100.01016.52
7.4.120.0080.00816.52
7.4.110.0190.00616.56
7.4.100.0060.01216.46
7.4.90.0090.00916.48
7.4.80.0070.01016.36
7.4.70.0060.01216.45
7.4.60.0090.01316.52
7.4.50.0000.01216.21
7.4.40.0030.01316.14
7.4.30.0080.01016.55
7.4.00.0030.01114.88
7.3.330.0070.00013.23
7.3.320.0000.00613.23
7.3.310.0030.00316.05
7.3.300.0070.00016.27
7.3.290.0070.00716.25
7.3.280.0100.01116.21
7.3.270.0060.01216.41
7.3.260.0080.01116.62
7.3.250.0150.00716.32
7.3.240.0070.01016.23
7.3.230.0110.00816.52
7.3.210.0130.00316.25
7.3.200.0030.01819.39
7.3.190.0090.01316.20
7.3.180.0100.00616.31
7.3.170.0110.00916.20
7.3.160.0160.00016.21
7.3.120.0070.01014.46
7.2.330.0030.01316.46
7.2.320.0150.00716.30
7.2.310.0040.01816.60
7.2.300.0080.01216.28
7.2.290.0130.00316.29
7.2.00.0030.00619.47
7.1.100.0070.00318.04
7.1.70.0040.00816.90
7.1.60.0100.01319.40
7.1.50.0060.01216.85
7.1.00.0100.02722.31
7.0.200.0000.00716.39
7.0.140.0000.07322.00
7.0.120.0030.07322.09
7.0.90.0330.08320.01
7.0.80.0500.07319.87
7.0.70.0600.04720.15
7.0.60.0670.08019.99
7.0.50.0530.07320.31
7.0.40.0130.05320.08
7.0.30.0070.08720.13
7.0.20.0100.05020.04
7.0.10.0030.04720.10
7.0.00.0070.05020.14
5.6.280.0000.07721.11
5.6.240.0070.08320.70
5.6.230.0030.05020.54
5.6.220.0030.07320.57
5.6.210.0000.05720.67
5.6.200.0070.05021.19
5.6.190.0100.08321.08
5.6.180.0200.06721.18
5.6.170.0070.06021.09
5.6.160.0100.08321.06
5.6.150.0030.06721.10
5.6.140.0100.04321.10
5.6.130.0030.04721.03
5.6.120.0130.06720.99
5.6.110.0070.08721.11
5.6.100.0070.08721.11
5.6.90.0070.09021.08
5.6.80.0130.07720.45
5.6.70.0070.05020.50
5.6.60.0070.07320.46
5.6.50.0100.05020.39
5.6.40.0030.08720.32
5.6.30.0070.06320.48
5.6.20.0070.05320.50
5.6.10.0070.07320.47
5.6.00.0000.08720.53
5.5.380.0070.06020.52
5.5.370.0000.04720.37
5.5.360.0030.09020.45
5.5.350.0130.07320.46
5.5.340.0130.07320.91
5.5.330.0100.08020.87
5.5.320.0030.08020.87
5.5.310.0000.07720.84
5.5.300.0030.07320.84
5.5.290.0070.07720.89
5.5.280.0100.08020.66
5.5.270.0130.08020.91
5.5.260.0130.07020.93
5.5.250.0100.08320.72
5.5.240.0070.05320.18
5.5.230.0030.05320.26
5.5.220.0100.04320.22
5.5.210.0030.07720.13
5.5.200.0030.07720.30
5.5.190.0100.07320.10
5.5.180.0130.07020.26
5.5.160.0070.08020.29
5.5.150.0070.06020.00
5.5.140.0130.07020.00
5.5.130.0130.04020.27
5.5.120.0070.07720.24
5.5.110.0100.07720.07
5.5.100.0070.06020.09
5.5.90.0100.04719.99
5.5.80.0030.05320.11
5.5.70.0100.04020.05
5.5.60.0130.07020.02
5.5.50.0070.06020.11
5.5.40.0130.07019.95
5.5.30.0100.04720.07
5.5.20.0100.06320.13
5.5.10.0030.08019.99
5.5.00.0030.04320.14
5.4.450.0030.06719.50
5.4.440.0030.09019.52
5.4.430.0030.07019.20
5.4.420.0100.08019.35
5.4.410.0130.07019.32
5.4.400.0130.06718.88
5.4.390.0070.06019.04
5.4.380.0170.06019.03
5.4.370.0100.07319.24
5.4.360.0130.07019.04
5.4.350.0070.05319.13
5.4.340.0170.06719.11
5.4.320.0030.08319.23
5.4.310.0070.08019.14
5.4.300.0230.06319.04
5.4.290.0030.04319.18
5.4.280.0070.04019.12
5.4.270.0070.04719.16
5.4.260.0070.08019.02
5.4.250.0070.08019.23
5.4.240.0000.04319.11
5.4.230.0070.04718.89
5.4.220.0130.03319.09
5.4.210.0030.08319.12
5.4.200.0070.04319.08
5.4.190.0070.05319.02
5.4.180.0070.05019.11
5.4.170.0070.07718.90
5.4.160.0030.04319.12
5.4.150.0070.08019.14
5.4.140.0100.03316.34
5.4.130.0070.07016.34
5.4.120.0100.05316.46
5.4.110.0070.07316.52
5.4.100.0130.04016.48
5.4.90.0000.04016.32
5.4.80.0070.05016.54
5.4.70.0030.06716.39
5.4.60.0070.05716.30
5.4.50.0100.06316.45
5.4.40.0130.03316.46
5.4.30.0000.05316.45
5.4.20.0070.04716.25
5.4.10.0030.04016.44
5.4.00.0070.07715.81
5.3.290.0100.06714.68
5.3.280.0130.06314.67
5.3.270.0100.08014.62
5.3.260.0130.05714.62
5.3.250.0070.05314.69
5.3.240.0030.04014.61
5.3.230.0100.07314.64
5.3.220.0100.03714.57
5.3.210.0000.06314.66
5.3.200.0200.03714.52
5.3.190.0000.04014.66
5.3.180.0030.08014.59
5.3.170.0000.04314.65
5.3.160.0070.05014.65
5.3.150.0000.05714.66
5.3.140.0100.05314.60
5.3.130.0030.07714.69
5.3.120.0170.06314.58
5.3.110.0000.06314.59
5.3.100.0070.04714.01
5.3.90.0070.07714.08
5.3.80.0070.05313.97
5.3.70.0130.05314.11
5.3.60.0070.07714.17
5.3.50.0070.05314.09
5.3.40.0030.05713.96
5.3.30.0030.03713.99
5.3.20.0000.03713.64
5.3.10.0000.03713.66
5.3.00.0000.04013.64
5.2.170.0030.06011.23
5.2.160.0030.03311.29
5.2.150.0070.03311.18
5.2.140.0100.02311.22
5.2.130.0070.02711.22
5.2.120.0030.02711.14
5.2.110.0030.05711.03
5.2.100.0070.02711.04
5.2.90.0000.03311.23
5.2.80.0070.02711.22
5.2.70.0100.04011.14
5.2.60.0030.03311.11
5.2.50.0000.03311.12
5.2.40.0000.03011.17
5.2.30.0000.03011.09
5.2.20.0030.02710.96
5.2.10.0030.05010.82
5.2.00.0000.03710.73
5.1.60.0000.02710.02
5.1.50.0030.02010.11
5.1.40.0000.02710.07
5.1.30.0030.02710.31
5.1.20.0030.02710.41
5.1.10.0000.0379.96
5.1.00.0000.0279.94
5.0.50.0000.0208.70
5.0.40.0000.0208.54
5.0.30.0000.0378.36
5.0.20.0000.0208.23
5.0.10.0030.0278.28
5.0.00.0000.0338.05
4.4.90.0000.0177.21
4.4.80.0000.0177.21
4.4.70.0030.0137.21
4.4.60.0000.0177.21
4.4.50.0030.0107.21
4.4.40.0030.0277.21
4.4.30.0030.0137.21
4.4.20.0030.0137.21
4.4.10.0000.0177.21
4.4.00.0000.0237.21
4.3.110.0030.0177.21
4.3.100.0000.0177.21
4.3.90.0000.0277.21
4.3.80.0000.0307.21
4.3.70.0000.0137.21
4.3.60.0000.0137.21
4.3.50.0000.0137.21
4.3.40.0000.0237.21
4.3.30.0030.0177.21
4.3.20.0000.0177.21
4.3.10.0000.0177.21
4.3.00.0000.0137.21

preferences:
58.12 ms | 401 KiB | 5 Q