3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!function_exists('json_encode')) { function json_encode($it) { if (!is_array($it) && !is_object($it)) { return _js_enc_value($it); } $assoc = false; $i = 0; foreach ($it as $k => $v) { if ($k !== $i) { $assoc = true; break; } $i++; } $data = array(); foreach ($it as $k => $v) { $k = '"'. addcslashes($k, '"\\') . '"'; $v = _js_enc_value($v); $data[] = $assoc ? $key . ':' . $value : $value; } if ($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): return 'null'; case is_string($value): return '"' . _js_uni_esc($value) . '"'; default: return $value; } } function _js_uni_esc($value) { $pattern = "/\r|(\n)|((?:[^\x09\x0A\x0D\x20-\x7E]{3})+)/"; return preg_replace_callback($pattern, '_js_uni_esc_cb', $value); } function _js_uni_esc_cb($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'; } } } $var = array( 0 => array('text', 1, 1.1, true, false, null, new stdClass), 2 => array('a' => 'hoge', 'b' => 'foo'), ); echo json_encode($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)
8.3.60.0130.00718.53
8.3.50.0080.01121.15
8.3.40.0070.00718.66
8.3.30.0030.01020.33
8.3.20.0100.00019.96
8.3.10.0030.00521.04
8.3.00.0000.00822.39
8.2.180.0110.00418.30
8.2.170.0090.00622.96
8.2.160.0100.00722.18
8.2.150.0030.00524.18
8.2.140.0060.01024.66
8.2.130.0030.00626.16
8.2.120.0080.00020.70
8.2.110.0030.00620.48
8.2.100.0130.00017.91
8.2.90.0080.00019.22
8.2.80.0030.00517.97
8.2.70.0120.00017.47
8.2.60.0000.00818.03
8.2.50.0060.00318.10
8.2.40.0030.00918.05
8.2.30.0040.00419.39
8.2.20.0040.00417.75
8.2.10.0040.00417.84
8.2.00.0060.00317.69
8.1.280.0100.00725.92
8.1.270.0040.00423.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0110.00623.92
8.1.230.0100.00017.95
8.1.220.0000.00917.75
8.1.210.0040.00418.77
8.1.200.0000.00917.36
8.1.190.0040.00417.23
8.1.180.0000.00818.10
8.1.170.0030.00618.64
8.1.160.0040.00418.77
8.1.150.0040.00418.74
8.1.140.0000.00717.41
8.1.130.0030.00317.88
8.1.120.0030.00517.56
8.1.110.0050.00517.56
8.1.100.0050.00317.43
8.1.90.0040.00417.56
8.1.80.0000.00817.51
8.1.70.0030.00317.51
8.1.60.0030.00517.50
8.1.50.0070.00017.46
8.1.40.0060.00317.54
8.1.30.0030.00617.56
8.1.20.0080.00017.70
8.1.10.0080.00017.60
8.1.00.0000.00817.60
8.0.300.0080.00018.77
8.0.290.0000.00716.63
8.0.280.0000.00718.49
8.0.270.0000.00717.20
8.0.260.0000.00618.40
8.0.250.0070.00016.89
8.0.240.0040.00416.99
8.0.230.0040.00416.89
8.0.220.0000.00816.92
8.0.210.0070.00016.94
8.0.200.0030.00316.96
8.0.190.0030.00317.02
8.0.180.0030.00516.89
8.0.170.0000.00716.93
8.0.160.0000.00817.02
8.0.150.0040.00416.79
8.0.140.0040.00416.92
8.0.130.0060.00313.32
8.0.120.0060.00316.78
8.0.110.0040.00416.84
8.0.100.0070.00016.80
8.0.90.0040.00416.82
8.0.80.0030.01316.93
8.0.70.0070.00016.88
8.0.60.0060.00316.97
8.0.50.0020.00516.82
8.0.30.0090.00917.20
8.0.20.0030.01617.40
8.0.10.0040.00416.93
8.0.00.0040.01516.80
7.4.330.0030.00315.09
7.4.320.0030.00316.55
7.4.300.0060.00016.63
7.4.290.0030.00516.49
7.4.280.0070.00016.57
7.4.270.0030.00316.57
7.4.260.0000.00713.31
7.4.250.0000.00816.61
7.4.240.0000.00716.59
7.4.230.0030.00416.73
7.4.220.0080.01416.61
7.4.210.0050.01216.64
7.4.200.0070.00016.65
7.4.190.0030.00316.54
7.4.160.0100.00716.39
7.4.150.0150.00417.40
7.4.140.0100.01017.86
7.4.130.0080.00816.55
7.4.120.0130.00716.46
7.4.110.0140.00316.76
7.4.100.0090.00916.43
7.4.90.0160.00616.48
7.4.80.0070.01119.39
7.4.70.0130.00316.54
7.4.60.0140.00316.49
7.4.50.0030.00616.71
7.4.40.0170.00022.77
7.4.30.0100.00716.54
7.4.00.0060.00714.87
7.3.330.0030.00313.36
7.3.320.0000.00513.14
7.3.310.0050.00216.27
7.3.300.0040.00416.26
7.3.290.0090.00616.25
7.3.280.0080.01016.27
7.3.270.0090.00917.40
7.3.260.0060.01218.24
7.3.250.0120.00916.39
7.3.240.0110.01116.42
7.3.230.0060.01216.64
7.3.210.0100.00716.60
7.3.200.0180.01519.39
7.3.190.0070.01016.27
7.3.180.0110.00616.40
7.3.170.0060.00916.57
7.3.160.0060.01016.14
7.3.120.0050.01314.83
7.3.110.0030.01414.70
7.3.100.0060.00915.05
7.3.90.0070.00715.10
7.3.80.0110.00314.75
7.3.70.0070.01014.74
7.3.60.0040.00714.51
7.3.50.0000.01414.39
7.3.40.0040.01114.88
7.3.30.0040.01114.47
7.3.20.0080.00416.34
7.3.10.0100.00316.57
7.3.00.0140.00316.36
7.2.330.0110.00716.78
7.2.320.0190.00316.71
7.2.310.0060.01016.73
7.2.300.0140.00316.63
7.2.290.0080.00816.68
7.2.250.0080.01215.13
7.2.240.0030.01914.98
7.2.230.0080.01115.16
7.2.220.0000.01415.24
7.2.210.0120.00415.07
7.2.200.0070.00715.22
7.2.190.0060.00914.88
7.2.180.0040.00814.96
7.2.170.0110.00014.93
7.2.60.0030.01017.02
7.1.330.0000.01215.59
7.1.320.0130.00015.81
7.1.310.0100.00315.80
7.1.300.0070.00415.88
7.1.290.0090.00315.64
7.1.280.0070.01015.64
7.1.270.0080.00415.57
7.1.260.0060.00615.81
7.1.200.0120.00315.89
7.1.100.0030.00618.10
7.1.70.0080.00416.95
7.1.60.0180.00719.17
7.1.50.0070.01716.66
7.1.00.0000.04322.54
7.0.200.0360.00614.43
7.0.140.0000.07721.99
7.0.90.0630.04719.92
7.0.80.0470.04019.87
7.0.70.0700.07319.96
7.0.60.0700.06719.92
7.0.50.0500.05020.30
7.0.40.0100.05020.08
7.0.30.0130.07720.13
7.0.20.0130.06720.08
7.0.10.0000.06020.09
7.0.00.0200.07320.09
5.6.280.0100.06020.92
5.6.240.0030.08720.56
5.6.230.0030.07320.52
5.6.220.0070.08720.53
5.6.210.0200.04320.63
5.6.200.0130.07720.97
5.6.190.0200.07021.13
5.6.180.0030.04721.08
5.6.170.0100.04020.99
5.6.160.0100.05320.95
5.6.150.0030.08721.04
5.6.140.0070.08021.01
5.6.130.0100.08321.18
5.6.120.0030.05021.04
5.6.110.0030.06721.09
5.6.100.0100.06320.96
5.6.90.0070.08321.11
5.6.80.0070.08020.32
5.6.70.0070.04320.52
5.6.60.0100.04320.34
5.6.50.0030.08020.58
5.6.40.0000.08020.43
5.6.30.0130.07020.32
5.6.20.0100.07720.46
5.6.10.0030.08020.48
5.6.00.0100.07020.35
5.5.380.0030.07020.38
5.5.370.0030.08020.36
5.5.360.0100.08720.55
5.5.350.0100.04720.43
5.5.340.0070.05320.73
5.5.330.0030.06320.78
5.5.320.0130.06720.79
5.5.310.0030.04320.65
5.5.300.0030.05320.92
5.5.290.0170.07720.89
5.5.280.0070.08720.79
5.5.270.0130.08020.94
5.5.260.0200.05720.84
5.5.250.0070.08020.71
5.5.240.0130.04020.23
5.5.230.0070.04720.30
5.5.220.0030.08020.28
5.5.210.0100.08020.22
5.5.200.0170.07020.30
5.5.190.0030.05320.29
5.5.180.0030.08320.20
5.5.160.0030.04320.13
5.5.150.0070.05020.27
5.5.140.0130.07020.29
5.5.130.0130.06020.25
5.5.120.0000.06720.10
5.5.110.0130.05720.27
5.5.100.0030.07320.12
5.5.90.0030.07720.18
5.5.80.0130.06720.08
5.5.70.0100.05020.05
5.5.60.0070.08019.95
5.5.50.0030.07720.05
5.5.40.0130.07320.10
5.5.30.0100.07019.96
5.5.20.0030.08719.97
5.5.10.0100.07719.98
5.5.00.0130.08720.07
5.4.450.0130.06719.23
5.4.440.0130.06019.37
5.4.430.0000.07319.17
5.4.420.0000.08719.36
5.4.410.0100.06319.32
5.4.400.0170.07018.91
5.4.390.0070.08019.21
5.4.380.0070.07019.23
5.4.370.0070.07319.16
5.4.360.0100.07719.23
5.4.350.0070.05718.94
5.4.340.0130.07019.09
5.4.320.0070.07019.04
5.4.310.0200.06019.03
5.4.300.0030.07719.02
5.4.290.0200.05319.23
5.4.280.0030.07319.13
5.4.270.0070.08018.87
5.4.260.0100.07018.88
5.4.250.0070.07319.04
5.4.240.0130.07018.94
5.4.230.0130.07319.13
5.4.220.0100.08018.84
5.4.210.0100.05318.92
5.4.200.0170.06718.84
5.4.190.0100.06719.03
5.4.180.0100.06019.04
5.4.170.0130.07319.08
5.4.160.0100.06018.83
5.4.150.0100.07319.21
5.4.140.0000.06016.26
5.4.130.0100.07016.45
5.4.120.0130.07016.43
5.4.110.0070.03716.54
5.4.100.0000.06316.50
5.4.90.0000.07016.48
5.4.80.0100.06316.47
5.4.70.0000.05316.43
5.4.60.0070.07316.50
5.4.50.0170.03016.31
5.4.40.0070.06716.52
5.4.30.0200.05316.46
5.4.20.0170.06016.33
5.4.10.0070.05016.46
5.4.00.0070.05715.75
5.3.290.0030.07714.80
5.3.280.0100.07714.65
5.3.270.0030.07314.76
5.3.260.0070.07714.74
5.3.250.0030.07714.57
5.3.240.0100.07014.61
5.3.230.0030.07314.69
5.3.220.0130.07714.65
5.3.210.0000.05314.69
5.3.200.0000.06314.70
5.3.190.0100.04314.59
5.3.180.0100.07014.52
5.3.170.0030.08014.63
5.3.160.0070.05314.65
5.3.150.0130.07014.61
5.3.140.0070.07314.59
5.3.130.0200.05714.67
5.3.120.0070.07714.61
5.3.110.0100.07314.58
5.3.100.0070.05713.99
5.3.90.0070.03314.04
5.3.80.0030.04014.09
5.3.70.0070.07314.09
5.3.60.0070.04713.95
5.3.50.0070.04314.07
5.3.40.0070.06014.04
5.3.30.0100.06314.08
5.3.20.0130.05313.61
5.3.10.0030.07313.70
5.3.00.0030.07313.76
5.2.170.0070.03011.06
5.2.160.0070.06011.09
5.2.150.0030.06311.06
5.2.140.0000.06711.23
5.2.130.0070.04011.23
5.2.120.0030.06311.16
5.2.110.0170.05311.13
5.2.100.0070.03311.18
5.2.90.0170.04311.04
5.2.80.0100.05711.05
5.2.70.0070.04711.26
5.2.60.0070.05711.17
5.2.50.0100.04711.11
5.2.40.0000.06710.94
5.2.30.0070.06011.08
5.2.20.0030.06310.89
5.2.10.0130.03710.95
5.2.00.0070.03010.87
5.1.60.0030.05710.04
5.1.50.0130.04710.14
5.1.40.0100.0409.89
5.1.30.0070.04710.42
5.1.20.0030.06010.49
5.1.10.0070.05310.19
5.1.00.0070.05310.20
5.0.50.0070.0438.66
5.0.40.0000.0338.54
5.0.30.0030.0638.34
5.0.20.0000.0478.34
5.0.10.0000.0338.34
5.0.00.0000.0438.34
4.4.90.0000.0378.34
4.4.80.0030.0338.34
4.4.70.0030.0378.34
4.4.60.0030.0178.34
4.4.50.0000.0338.34
4.4.40.0030.0538.34
4.4.30.0000.0378.34
4.4.20.0030.0378.34
4.4.10.0000.0278.34
4.4.00.0030.0538.34
4.3.110.0070.0338.34
4.3.100.0030.0378.34
4.3.90.0030.0278.34
4.3.80.0030.0538.34
4.3.70.0030.0338.34
4.3.60.0000.0338.34
4.3.50.0030.0338.34
4.3.40.0030.0538.34
4.3.30.0000.0338.34
4.3.20.0070.0278.34
4.3.10.0000.0338.34
4.3.00.0030.0338.34

preferences:
46.74 ms | 401 KiB | 5 Q