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((array)$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\\\"/"); } } } $var = array( array( 'text', 1, 1.1, true, false, null, array(), new stdClass, fopen('php://stdin', 'r'), ), array( '0' => 'hoge', '1' => 'foo', ), (object)array( '0' => 'hoge', '1' => 'foo', ), array( '0' => 'hoge', '2' => 'foo', ), (object)array( '0' => 'hoge', '2' => 'foo', ), ); var_dump(@json_encode($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)
8.3.60.0180.00418.43
8.3.50.0140.00522.05
8.3.40.0120.00318.78
8.3.30.0150.00319.03
8.3.20.0040.00420.30
8.3.10.0000.00821.92
8.3.00.0040.00422.40
8.2.180.0120.00316.73
8.2.170.0090.00622.96
8.2.160.0140.00720.93
8.2.150.0030.00524.18
8.2.140.0040.00424.66
8.2.130.0050.00226.16
8.2.120.0030.00619.75
8.2.110.0030.00922.07
8.2.100.0060.00617.97
8.2.90.0000.00819.36
8.2.80.0060.00617.97
8.2.70.0040.00417.63
8.2.60.0040.00418.03
8.2.50.0000.00818.07
8.2.40.0040.00418.28
8.2.30.0040.00418.03
8.2.20.0060.00317.84
8.2.10.0040.00419.58
8.2.00.0000.00717.80
8.1.280.0100.00725.92
8.1.270.0040.00424.01
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0090.00023.92
8.1.230.0050.00519.22
8.1.220.0040.00417.91
8.1.210.0030.00518.77
8.1.200.0080.00017.35
8.1.190.0030.00517.43
8.1.180.0000.00818.10
8.1.170.0030.00618.54
8.1.160.0040.00421.97
8.1.150.0040.00418.62
8.1.140.0030.00517.53
8.1.130.0030.00317.89
8.1.120.0000.00717.36
8.1.110.0040.00417.48
8.1.100.0000.00717.54
8.1.90.0040.00417.55
8.1.80.0020.00517.55
8.1.70.0040.00417.39
8.1.60.0030.00617.65
8.1.50.0000.00817.46
8.1.40.0040.00417.58
8.1.30.0080.00017.68
8.1.20.0030.00617.58
8.1.10.0040.00417.70
8.1.00.0090.00017.46
8.0.300.0000.00918.77
8.0.290.0070.00017.05
8.0.280.0070.00018.62
8.0.270.0000.00717.30
8.0.260.0070.00016.97
8.0.250.0030.00317.11
8.0.240.0040.00417.04
8.0.230.0070.00017.16
8.0.220.0000.00717.07
8.0.210.0030.00317.07
8.0.200.0070.00017.01
8.0.190.0000.00717.05
8.0.180.0050.00517.04
8.0.170.0000.00817.01
8.0.160.0040.00417.15
8.0.150.0030.00516.91
8.0.140.0040.00417.11
8.0.130.0000.00613.44
8.0.120.0050.00316.95
8.0.110.0040.00417.09
8.0.100.0040.00417.18
8.0.90.0000.00817.06
8.0.80.0000.01917.07
8.0.70.0000.00817.18
8.0.60.0040.00416.96
8.0.50.0050.00316.94
8.0.30.0110.00817.18
8.0.20.0120.00717.40
8.0.10.0000.00717.07
8.0.00.0070.01516.79
7.4.330.0000.00615.00
7.4.320.0000.00616.68
7.4.300.0000.00616.66
7.4.290.0050.00216.57
7.4.280.0030.00316.46
7.4.270.0030.00316.56
7.4.260.0030.00316.57
7.4.250.0070.00016.67
7.4.240.0050.00316.70
7.4.230.0070.00016.64
7.4.220.0090.00916.70
7.4.210.0060.00916.58
7.4.200.0070.00016.69
7.4.190.0000.00816.71
7.4.160.0040.01316.73
7.4.150.0200.00917.40
7.4.140.0080.00817.86
7.4.130.0050.01316.64
7.4.120.0090.01016.70
7.4.110.0070.01016.56
7.4.100.0110.00816.68
7.4.90.0070.01016.38
7.4.80.0150.00316.46
7.4.70.0180.00616.59
7.4.60.0160.00716.33
7.4.50.0040.00416.55
7.4.40.0110.00422.77
7.4.30.0070.01016.66
7.4.00.0120.00615.18
7.3.330.0000.00613.41
7.3.320.0000.00513.41
7.3.310.0030.00316.41
7.3.300.0000.00716.41
7.3.290.0040.01116.36
7.3.280.0100.01016.40
7.3.270.0080.01117.40
7.3.260.0070.01016.58
7.3.250.0070.01116.57
7.3.240.0180.00316.50
7.3.230.0070.01016.45
7.3.210.0140.00316.21
7.3.200.0150.00619.39
7.3.190.0130.00916.54
7.3.180.0100.00616.55
7.3.170.0090.00616.61
7.3.160.0030.01316.39
7.3.120.0070.00714.50
7.2.330.0060.01216.61
7.2.320.0090.00916.52
7.2.310.0170.00616.55
7.2.300.0040.01816.48
7.2.290.0080.00816.44
7.2.00.0070.00719.27
7.1.100.0030.00917.95
7.1.70.0040.00417.01
7.1.60.0240.00019.82
7.1.50.0060.01616.76
7.1.00.0070.07322.44
7.0.200.0100.00016.84
7.0.140.0000.07321.96
7.0.90.0330.04019.92
7.0.80.0470.04019.88
7.0.70.0430.04019.93
7.0.60.0200.04019.95
7.0.50.0230.03720.42
7.0.40.0070.05720.19
7.0.30.0030.05020.11
7.0.20.0030.06720.11
7.0.10.0030.04320.04
7.0.00.0000.04720.14
5.6.280.0070.07021.12
5.6.230.0070.04020.47
5.6.220.0000.05020.53
5.6.210.0000.04320.53
5.6.200.0030.04321.10
5.6.190.0170.04721.03
5.6.180.0100.03721.05
5.6.170.0000.04721.07
5.6.160.0130.06321.10
5.6.150.0100.03721.13
5.6.140.0130.03321.13
5.6.130.0030.04321.12
5.6.120.0130.04021.03
5.6.110.0070.04021.03
5.6.100.0030.04321.05
5.6.90.0100.03721.11
5.6.80.0030.04320.34
5.6.70.0000.07320.48
5.6.60.0100.05720.47
5.6.50.0130.07720.36
5.6.40.0100.07720.47
5.6.30.0070.04720.44
5.6.20.0000.08320.44
5.6.10.0100.06720.54
5.6.00.0130.07020.47
5.5.370.0030.04020.39
5.5.360.0030.04720.32
5.5.350.0030.04320.45
5.5.340.0130.03320.91
5.5.330.0030.04020.86
5.5.320.0170.04320.91
5.5.310.0030.04320.93
5.5.300.0100.03720.93
5.5.290.0000.05720.89
5.5.280.0070.04320.66
5.5.270.0000.07720.87
5.5.260.0170.05020.93
5.5.250.0030.04020.66
5.5.240.0000.04320.16
5.5.230.0100.08020.29
5.5.220.0100.06320.16
5.5.210.0100.06720.30
5.5.200.0030.08320.13
5.5.190.0100.08320.27
5.5.180.0070.05720.14
5.5.160.0030.08320.14
5.5.150.0100.06720.14
5.5.140.0070.04020.27
5.5.130.0100.08320.29
5.5.120.0170.07020.14
5.5.110.0100.07320.27
5.5.100.0130.03720.00
5.5.90.0070.07320.14
5.5.80.0070.05720.09
5.5.70.0130.06020.07
5.5.60.0100.07320.07
5.5.50.0170.07020.08
5.5.40.0070.08020.03
5.5.30.0130.07720.07
5.5.20.0100.07720.04
5.5.10.0170.06320.09
5.5.00.0030.06020.12
5.4.450.0070.03719.51
5.4.440.0070.06719.37
5.4.430.0000.04719.50
5.4.420.0000.04719.17
5.4.410.0070.07319.10
5.4.400.0030.08019.18
5.4.390.0100.05019.12
5.4.380.0130.05019.13
5.4.370.0030.06718.90
5.4.360.0100.07319.06
5.4.350.0070.05319.14
5.4.340.0130.07319.13
5.4.320.0170.07019.13
5.4.310.0100.06719.11
5.4.300.0100.07019.12
5.4.290.0070.07719.20
5.4.280.0100.04319.18
5.4.270.0130.07018.87
5.4.260.0000.08719.18
5.4.250.0030.04719.19
5.4.240.0070.05718.90
5.4.230.0030.05019.08
5.4.220.0100.07319.16
5.4.210.0100.07019.08
5.4.200.0000.06719.15
5.4.190.0070.06719.23
5.4.180.0000.07719.20
5.4.170.0230.06019.04
5.4.160.0130.06719.11
5.4.150.0070.05019.11
5.4.140.0070.05016.45
5.4.130.0070.06716.47
5.4.120.0100.07016.41
5.4.110.0070.07316.49
5.4.100.0100.07016.56
5.4.90.0030.07016.40
5.4.80.0000.07016.49
5.4.70.0070.06716.47
5.4.60.0100.03316.34
5.4.50.0070.07016.31
5.4.40.0070.07316.30
5.4.30.0100.07316.43
5.4.20.0170.06316.45
5.4.10.0130.05316.45
5.4.00.0070.04715.73
5.3.290.0030.08014.70
5.3.280.0130.03714.55
5.3.270.0030.05314.60
5.3.260.0200.06314.56
5.3.250.0030.05714.70
5.3.240.0000.08014.72
5.3.230.0030.08014.68
5.3.220.0070.06014.48
5.3.210.0070.07314.55
5.3.200.0130.07714.52
5.3.190.0100.07714.60
5.3.180.0100.07314.54
5.3.170.0000.08014.59
5.3.160.0030.07014.61
5.3.150.0030.08014.60
5.3.140.0030.04714.61
5.3.130.0030.05714.50
5.3.120.0200.06314.63
5.3.110.0030.08014.52
5.3.100.0100.05714.07
5.3.90.0100.06314.01
5.3.80.0070.06014.18
5.3.70.0070.03714.03
5.3.60.0030.04714.17
5.3.50.0030.05014.11
5.3.40.0100.06713.98
5.3.30.0130.07014.05
5.3.20.0070.04313.73
5.3.10.0130.06313.73
5.3.00.0000.08313.59
5.2.170.0030.06011.18
5.2.160.0070.06711.28
5.2.150.0000.06711.18
5.2.140.0070.04311.26
5.2.130.0070.03011.23
5.2.120.0000.03311.18
5.2.110.0000.06311.15
5.2.100.0070.05311.04
5.2.90.0100.06011.16
5.2.80.0070.06311.18
5.2.70.0070.06311.02
5.2.60.0130.06010.97
5.2.50.0030.06310.97
5.2.40.0070.05710.91
5.2.30.0030.06310.93
5.2.20.0070.05011.05
5.2.10.0100.05710.88
5.2.00.0000.04710.87
5.1.60.0130.04010.30
5.1.50.0100.05010.30
5.1.40.0100.04710.30
5.1.30.0070.05710.32
5.1.20.0030.04010.45
5.1.10.0030.04710.30
5.1.00.0070.05310.30
5.0.50.0030.04710.30
5.0.40.0100.03310.30
5.0.30.0070.05710.30
5.0.20.0030.03710.30
5.0.10.0030.04310.30
5.0.00.0070.04710.30
4.4.90.0000.03010.30
4.4.80.0000.03010.30
4.4.70.0030.03710.30
4.4.60.0000.03310.30
4.4.50.0030.03710.30
4.4.40.0000.03710.30
4.4.30.0070.03310.30
4.4.20.0030.03310.30
4.4.10.0070.03310.30
4.4.00.0030.05310.30
4.3.110.0030.03010.30
4.3.100.0070.02710.30
4.3.90.0070.03010.30
4.3.80.0000.04010.30
4.3.70.0030.03710.30
4.3.60.0130.02310.30
4.3.50.0030.03710.30
4.3.40.0000.04710.30
4.3.30.0000.03010.30
4.3.20.0070.02710.30
4.3.10.0000.03710.30
4.3.00.0000.03710.30

preferences:
49.01 ms | 401 KiB | 5 Q