3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!function_exists('json_encode')) { function json_encode($it) { $tmp = $it; if (!($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) { $k = _js_enc_value($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\\\"/"); } } } $var = array( array( 'text', 1, 1.1, true, false, null, array(), new stdClass, fopen('php://stdin', 'r'), ), array( '&\'/"' => "\r\n\f\t", ), array( '0' => 'hoge', '1' => 'foo', ), (object)array( '0' => 'hoge', '1' => 'foo', ), array( '0' => 'hoge', '2' => 'foo', ), (object)array( '0' => 'hoge', '2' => 'foo', ), ); var_dump(@json_encode($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)
8.3.40.0070.01118.89
8.3.30.0120.00318.84
8.3.20.0160.00418.86
8.3.10.0050.00318.72
8.3.00.0060.00319.38
8.2.170.0140.00722.96
8.2.160.0100.00719.09
8.2.150.0040.00424.18
8.2.140.0110.00824.66
8.2.130.0040.00426.16
8.2.120.0050.00320.68
8.2.110.0060.00322.01
8.2.100.0110.00419.49
8.2.90.0000.00819.17
8.2.80.0030.00518.05
8.2.70.0000.00917.63
8.2.60.0040.00417.93
8.2.50.0060.00317.93
8.2.40.0030.00619.47
8.2.30.0040.00417.82
8.2.20.0090.00017.62
8.2.10.0040.00417.68
8.2.00.0130.00017.80
8.1.270.0040.00423.99
8.1.260.0040.00426.35
8.1.250.0120.00628.09
8.1.240.0030.00622.69
8.1.230.0130.00017.77
8.1.220.0030.00617.78
8.1.210.0030.00718.77
8.1.200.0030.00617.35
8.1.190.0080.00017.36
8.1.180.0040.00418.10
8.1.170.0050.00317.62
8.1.160.0040.00419.12
8.1.150.0000.00718.71
8.1.140.0040.00417.50
8.1.130.0070.00017.57
8.1.120.0050.00317.52
8.1.110.0020.00517.52
8.1.100.0000.00717.57
8.1.90.0040.00417.44
8.1.80.0040.00417.52
8.1.70.0040.00417.41
8.1.60.0050.00317.63
8.1.50.0040.00417.42
8.1.40.0040.00417.50
8.1.30.0030.00617.75
8.1.20.0030.00517.73
8.1.10.0000.00817.54
8.1.00.0000.00817.62
8.0.300.0060.00318.77
8.0.290.0040.00716.88
8.0.280.0030.00318.55
8.0.270.0000.00717.30
8.0.260.0030.00317.01
8.0.250.0040.00417.16
8.0.240.0030.00517.07
8.0.230.0000.00817.05
8.0.220.0030.00317.14
8.0.210.0030.00317.01
8.0.200.0000.00717.18
8.0.190.0000.00717.05
8.0.180.0060.00617.03
8.0.170.0030.00616.90
8.0.160.0030.00317.10
8.0.150.0040.00417.00
8.0.140.0030.00717.01
8.0.130.0030.00313.50
8.0.120.0000.00817.10
8.0.110.0000.00817.12
8.0.100.0000.00716.93
8.0.90.0070.00016.99
8.0.80.0070.01617.09
8.0.70.0040.00416.92
8.0.60.0050.00516.89
8.0.50.0000.00917.05
8.0.30.0260.00617.11
8.0.20.0080.01117.18
8.0.10.0040.00417.19
8.0.00.0070.01116.93
7.4.330.0050.00013.14
7.4.320.0030.00316.55
7.4.300.0000.00616.47
7.4.290.0000.00716.68
7.4.280.0070.00016.54
7.4.270.0000.00716.68
7.4.260.0060.00013.33
7.4.250.0040.00416.64
7.4.240.0030.00516.66
7.4.230.0070.00316.76
7.4.220.0100.01616.73
7.4.210.0030.01716.77
7.4.200.0080.00016.62
7.4.190.0040.00416.71
7.4.160.0030.01216.46
7.4.150.0130.00316.50
7.4.140.0150.00916.74
7.4.130.0060.01216.71
7.4.120.0100.00616.60
7.4.110.0090.01216.60
7.4.100.0120.00616.60
7.4.90.0030.01516.68
7.4.80.0130.00719.39
7.4.70.0070.01016.39
7.4.60.0070.01016.59
7.4.50.0030.00316.69
7.4.40.0070.00716.56
7.4.30.0130.01016.61
7.4.00.0000.01215.07
7.3.330.0060.00013.41
7.3.320.0000.00513.25
7.3.310.0000.00716.29
7.3.300.0030.00316.43
7.3.290.0090.00616.42
7.3.280.0100.00716.45
7.3.270.0100.01216.29
7.3.260.0060.01116.62
7.3.250.0090.01216.32
7.3.240.0140.00316.27
7.3.230.0070.01016.35
7.3.210.0030.01416.48
7.3.200.0070.01116.29
7.3.190.0070.01516.21
7.3.180.0070.01016.54
7.3.170.0100.00616.29
7.3.160.0140.00716.47
7.3.120.0030.01014.89
7.2.330.0090.01216.76
7.2.320.0070.01716.68
7.2.310.0030.01416.80
7.2.300.0070.01016.43
7.2.290.0100.01016.63
7.2.00.0100.00619.42
7.1.100.0200.01017.91
7.1.70.0040.00416.89
7.1.60.0040.02119.30
7.1.50.0110.01116.85
7.1.00.0000.06022.40
7.0.200.0070.00316.41
7.0.140.0100.06722.05
7.0.120.0070.06322.10
7.0.90.0370.08719.90
7.0.80.0430.05019.96
7.0.70.0200.06719.93
7.0.60.0530.08320.01
7.0.50.0000.09020.39
7.0.40.0130.07020.14
7.0.30.0030.08720.17
7.0.20.0070.07320.11
7.0.10.0070.05020.12
7.0.00.0200.03320.07
5.6.280.0030.07320.88
5.6.240.0030.08320.70
5.6.230.0100.08320.64
5.6.220.0070.04720.51
5.6.210.0030.05720.49
5.6.200.0000.09321.07
5.6.190.0100.08020.97
5.6.180.0100.07721.05
5.6.170.0130.04021.10
5.6.160.0030.05021.06
5.6.150.0070.08021.13
5.6.140.0170.07721.08
5.6.130.0130.05321.06
5.6.120.0130.04321.04
5.6.110.0070.04321.05
5.6.100.0070.04321.14
5.6.90.0030.09020.94
5.6.80.0100.06020.54
5.6.70.0070.07720.41
5.6.60.0030.08020.44
5.6.50.0100.05720.42
5.6.40.0130.04320.48
5.6.30.0100.05320.52
5.6.20.0030.07020.33
5.6.10.0130.06320.30
5.6.00.0070.06720.36
5.5.380.0030.06720.58
5.5.370.0070.07720.58
5.5.360.0070.04720.36
5.5.350.0000.06320.44
5.5.340.0170.07320.91
5.5.330.0100.04020.94
5.5.320.0100.07720.89
5.5.310.0030.08320.90
5.5.300.0130.07320.90
5.5.290.0100.08320.85
5.5.280.0070.08320.93
5.5.270.0130.08320.80
5.5.260.0100.07320.90
5.5.250.0030.09320.74
5.5.240.0130.06720.29
5.5.230.0170.06720.25
5.5.220.0100.07720.22
5.5.210.0030.04720.27
5.5.200.0100.07720.23
5.5.190.0200.03720.12
5.5.180.0070.08020.16
5.5.160.0130.07020.08
5.5.150.0100.07720.20
5.5.140.0030.04320.27
5.5.130.0100.07720.14
5.5.120.0170.04720.28
5.5.110.0000.08720.27
5.5.100.0130.08020.03
5.5.90.0000.06720.08
5.5.80.0000.07719.99
5.5.70.0000.05720.09
5.5.60.0100.05020.17
5.5.50.0170.06719.98
5.5.40.0100.06720.08
5.5.30.0130.07720.15
5.5.20.0100.05319.95
5.5.10.0070.08320.07
5.5.00.0130.08320.05
5.4.450.0030.08719.38
5.4.440.0070.06319.40
5.4.430.0070.06319.41
5.4.420.0100.04319.36
5.4.410.0070.08019.23
5.4.400.0070.07719.10
5.4.390.0070.08719.21
5.4.380.0030.06019.23
5.4.370.0100.05719.23
5.4.360.0000.08318.95
5.4.350.0100.07319.03
5.4.340.0100.07019.18
5.4.320.0070.05319.23
5.4.310.0000.05319.23
5.4.300.0070.08019.09
5.4.290.0070.06719.12
5.4.280.0030.04719.03
5.4.270.0100.06719.22
5.4.260.0030.06718.90
5.4.250.0200.06319.18
5.4.240.0130.07019.18
5.4.230.0100.07018.89
5.4.220.0070.07019.20
5.4.210.0030.07719.08
5.4.200.0100.05319.23
5.4.190.0100.07319.20
5.4.180.0100.04319.17
5.4.170.0070.07718.89
5.4.160.0030.08019.03
5.4.150.0030.08019.11
5.4.140.0100.04016.34
5.4.130.0000.07716.46
5.4.120.0030.08016.35
5.4.110.0070.07316.36
5.4.100.0130.04016.53
5.4.90.0030.07016.37
5.4.80.0070.06016.43
5.4.70.0200.05716.46
5.4.60.0030.05316.43
5.4.50.0130.07016.42
5.4.40.0170.04716.56
5.4.30.0070.08316.46
5.4.20.0130.04016.27
5.4.10.0170.04716.42
5.4.00.0030.07715.86
5.3.290.0100.07714.61
5.3.280.0100.07714.57
5.3.270.0070.07714.64
5.3.260.0130.06014.59
5.3.250.0030.07714.60
5.3.240.0070.05014.76
5.3.230.0000.06014.69
5.3.220.0100.06314.63
5.3.210.0070.07714.53
5.3.200.0130.07014.55
5.3.190.0070.07314.71
5.3.180.0070.07314.66
5.3.170.0130.06714.62
5.3.160.0000.07314.73
5.3.150.0130.03314.64
5.3.140.0130.06714.59
5.3.130.0100.07714.54
5.3.120.0030.06714.69
5.3.110.0030.08314.59
5.3.100.0100.06314.13
5.3.90.0200.04714.16
5.3.80.0100.07314.11
5.3.70.0100.07714.14
5.3.60.0170.06713.92
5.3.50.0000.05314.06
5.3.40.0070.03713.88
5.3.30.0070.04313.99
5.3.20.0100.07013.82
5.3.10.0100.04713.83
5.3.00.0030.03713.67
5.2.170.0030.04711.19
5.2.160.0070.03311.19
5.2.150.0070.02711.18
5.2.140.0030.04011.20
5.2.130.0130.05311.20
5.2.120.0100.05710.99
5.2.110.0030.05711.04
5.2.100.0030.03711.16
5.2.90.0070.05311.25
5.2.80.0000.04011.01
5.2.70.0100.05711.05
5.2.60.0000.05310.91
5.2.50.0070.06710.98
5.2.40.0030.03310.96
5.2.30.0030.06311.03
5.2.20.0070.06011.09
5.2.10.0070.05710.92
5.2.00.0100.04310.75
5.1.60.0000.04710.04
5.1.50.0070.05010.13
5.1.40.0100.04310.02
5.1.30.0030.05310.31
5.1.20.0070.04310.35
5.1.10.0130.03310.11
5.1.00.0070.05310.15
5.0.50.0100.0338.45
5.0.40.0000.0278.36
5.0.30.0000.0638.38
5.0.20.0030.0378.31
5.0.10.0000.0408.07
5.0.00.0000.0508.11
4.4.90.0000.0277.09
4.4.80.0030.0307.09
4.4.70.0000.0277.09
4.4.60.0000.0207.09
4.4.50.0000.0377.09
4.4.40.0030.0337.09
4.4.30.0030.0377.09
4.4.20.0000.0377.09
4.4.10.0000.0377.09
4.4.00.0030.0337.09
4.3.110.0000.0337.09
4.3.100.0030.0337.09
4.3.90.0030.0337.09
4.3.80.0000.0607.09
4.3.70.0070.0307.09
4.3.60.0030.0337.09
4.3.50.0070.0177.09
4.3.40.0000.0537.09
4.3.30.0000.0277.09
4.3.20.0030.0437.09
4.3.10.0030.0337.09
4.3.00.0030.0307.09

preferences:
44.35 ms | 400 KiB | 5 Q