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; } $i++; } if (!isset($k)) { $assoc = true; } $data = array(); foreach ($it as $k => $v) { $k = '"'. addcslashes($k, '"\\') . '"'; $v = _js_enc_value($v); $data[] = $assoc ? $k . ':' . $v : $v; } if ($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($value): return '"' . _js_uc_esc($value) . '"'; default: return $value; } } function _js_uc_esc($value) { $pattern = "/\r|(\n)|((?:[^\x09\x0A\x0D\x20-\x7E]{3})+)/"; return preg_replace_callback($pattern, '_js_uc_esc_cb', $value); } function _js_uc_esc_cb($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'; } } } $var = array( 0 => array('text', 1, 1.1, true, false, null, new stdClass, (object)array(0 => 1)), 2 => array('a' => 'hoge', 'b' => 'foo'), ); echo json_encode($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)
8.3.60.0100.01318.43
8.3.50.0120.01021.14
8.3.40.0040.01118.70
8.3.30.0100.00320.26
8.3.20.0080.00020.48
8.3.10.0040.00421.22
8.3.00.0080.00023.66
8.2.180.0080.00816.38
8.2.170.0080.00822.96
8.2.160.0130.00020.22
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0000.00721.07
8.2.110.0090.00019.30
8.2.100.0040.00818.03
8.2.90.0000.00819.30
8.2.80.0080.00017.97
8.2.70.0030.00717.63
8.2.60.0000.00817.93
8.2.50.0000.00818.07
8.2.40.0050.00318.34
8.2.30.0000.00719.54
8.2.20.0050.00317.81
8.2.10.0030.00617.92
8.2.00.0050.00217.73
8.1.280.0120.00625.92
8.1.270.0080.00023.99
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0030.00622.54
8.1.230.0040.00720.97
8.1.220.0030.00518.77
8.1.210.0040.00418.78
8.1.200.0060.00317.35
8.1.190.0000.00717.40
8.1.180.0030.00618.10
8.1.170.0060.00318.40
8.1.160.0040.00418.98
8.1.150.0000.00718.57
8.1.140.0000.00817.41
8.1.130.0090.00017.82
8.1.120.0040.00417.48
8.1.110.0040.00417.53
8.1.100.0000.00717.45
8.1.90.0040.00417.52
8.1.80.0000.00817.51
8.1.70.0030.00317.45
8.1.60.0100.00017.49
8.1.50.0040.00417.53
8.1.40.0060.00317.45
8.1.30.0050.00317.59
8.1.20.0000.00817.71
8.1.10.0000.00817.58
8.1.00.0040.00417.54
8.0.300.0000.00820.17
8.0.290.0000.00917.30
8.0.280.0070.00018.48
8.0.270.0030.00317.26
8.0.260.0030.00516.91
8.0.250.0040.00417.09
8.0.240.0050.00316.97
8.0.230.0040.00416.93
8.0.220.0030.00317.02
8.0.210.0070.00016.93
8.0.200.0000.00617.03
8.0.190.0030.00516.96
8.0.180.0040.00416.93
8.0.170.0000.00716.91
8.0.160.0040.00416.95
8.0.150.0040.00716.91
8.0.140.0040.00416.94
8.0.130.0000.00513.50
8.0.120.0040.00416.98
8.0.110.0040.00416.88
8.0.100.0070.00016.79
8.0.90.0040.00417.04
8.0.80.0100.00616.96
8.0.70.0040.00417.03
8.0.60.0000.00716.90
8.0.50.0000.00816.87
8.0.30.0180.00317.03
8.0.20.0110.00817.40
8.0.10.0040.00416.89
8.0.00.0200.00616.65
7.4.330.0000.00516.85
7.4.320.0000.00716.54
7.4.300.0000.00616.55
7.4.290.0070.00016.54
7.4.280.0030.00316.68
7.4.270.0000.00716.57
7.4.260.0050.00013.32
7.4.250.0040.00416.52
7.4.240.0040.00416.66
7.4.230.0030.00316.43
7.4.220.0120.01516.71
7.4.210.0050.01016.61
7.4.200.0000.00716.65
7.4.190.0040.00416.41
7.4.160.0130.00316.71
7.4.150.0150.00317.40
7.4.140.0080.01017.86
7.4.130.0100.00716.57
7.4.120.0080.00816.47
7.4.110.0060.01216.51
7.4.100.0080.01216.66
7.4.90.0060.01216.45
7.4.80.0110.00719.39
7.4.70.0120.00616.48
7.4.60.0060.01116.47
7.4.50.0040.00416.34
7.4.40.0040.00822.77
7.4.30.0070.01016.64
7.4.00.0080.01015.04
7.3.330.0050.00013.30
7.3.320.0050.00013.34
7.3.310.0000.00716.39
7.3.300.0030.00316.20
7.3.290.0090.00916.33
7.3.280.0100.00816.34
7.3.270.0120.00617.40
7.3.260.0080.01118.24
7.3.250.0120.00616.33
7.3.240.0090.01216.24
7.3.230.0100.01316.39
7.3.210.0100.00616.34
7.3.200.0170.00619.39
7.3.190.0100.00716.42
7.3.180.0100.00616.31
7.3.170.0210.00016.30
7.3.160.0040.01216.34
7.3.120.0060.00814.70
7.3.110.0110.00614.87
7.3.100.0020.01314.75
7.3.90.0070.00814.91
7.3.80.0040.01014.78
7.3.70.0030.01114.90
7.3.60.0050.00914.70
7.3.50.0090.00514.61
7.3.40.0040.00814.69
7.3.30.0070.00914.80
7.3.20.0030.01116.60
7.3.10.0070.00516.62
7.3.00.0070.00516.49
7.2.330.0120.00616.72
7.2.320.0110.00716.43
7.2.310.0060.01816.67
7.2.300.0030.01616.61
7.2.290.0130.00316.53
7.2.250.0020.01615.07
7.2.240.0050.01215.09
7.2.230.0070.00915.05
7.2.220.0040.01215.09
7.2.210.0060.00714.94
7.2.200.0060.00914.96
7.2.190.0050.00915.09
7.2.180.0050.00914.92
7.2.170.0030.01214.86
7.1.330.0050.00815.69
7.1.320.0080.00815.61
7.1.310.0080.00415.64
7.1.300.0030.00915.67
7.1.290.0050.00915.75
7.1.280.0020.01215.50
7.1.270.0090.00415.67
7.1.260.0050.00615.70
7.1.70.0040.00417.13
7.1.60.0140.01019.17
7.1.50.0170.01734.85
7.1.00.0000.06022.57
7.0.200.0030.00616.81
7.0.140.0100.06321.95
7.0.110.0030.08719.90
7.0.100.0100.07319.86
7.0.90.0070.08719.90
7.0.80.0130.07020.05
7.0.70.0100.08019.95
7.0.60.0130.07319.88
7.0.50.0000.05320.42
7.0.40.0100.04720.22
7.0.30.0030.04720.01
7.0.20.0030.04320.17
7.0.10.0030.04019.99
7.0.00.0070.04020.09
5.6.280.0030.07320.88
5.6.250.0130.07320.70
5.6.240.0130.04320.44
5.6.230.0130.07020.63
5.6.220.0130.07720.42
5.6.210.0070.08020.62
5.6.200.0100.06321.09
5.6.190.0030.04321.23
5.6.180.0030.04321.01
5.6.170.0270.02721.02
5.6.160.0030.04020.90
5.6.150.0000.04721.06
5.6.140.0100.03321.09
5.6.130.0000.07320.91
5.6.120.0030.04321.16
5.6.110.0130.05721.05
5.6.100.0070.04021.09
5.6.90.0070.06320.91
5.6.80.0100.03320.62
5.6.70.0100.03320.64
5.6.60.0030.04020.56
5.6.50.0030.04020.45
5.6.40.0070.03720.44
5.6.30.0100.03320.38
5.6.20.0070.06320.27
5.6.10.0100.04020.40
5.6.00.0000.04320.49
5.5.380.0170.07020.51
5.5.370.0130.07720.32
5.5.360.0070.08720.53
5.5.350.0100.07320.42
5.5.340.0070.05021.00
5.5.330.0070.04020.93
5.5.320.0030.04020.78
5.5.310.0030.04320.71
5.5.300.0070.04020.87
5.5.290.0100.03720.91
5.5.280.0000.08720.78
5.5.270.0070.05320.85
5.5.260.0070.07320.70
5.5.250.0030.04320.59
5.5.240.0030.04020.16
5.5.230.0100.03320.18
5.5.220.0030.04020.14
5.5.210.0100.08020.31
5.5.200.0030.04020.21
5.5.190.0030.04720.21
5.5.180.0000.04320.35
5.5.160.0030.03720.36
5.5.150.0000.04320.33
5.5.140.0000.04320.09
5.5.130.0030.04020.18
5.5.120.0030.04020.16
5.5.110.0030.05720.29
5.5.100.0000.04320.17
5.5.90.0030.04019.96
5.5.80.0030.04020.11
5.5.70.0100.06020.04
5.5.60.0030.07720.06
5.5.50.0070.08020.20
5.5.40.0030.06320.14
5.5.30.0070.07320.20
5.5.20.0100.08020.09
5.5.10.0100.07720.14
5.5.00.0100.07319.99
5.4.450.0000.04319.64
5.4.440.0030.05019.57
5.4.430.0000.04319.64
5.4.420.0100.07019.43
5.4.410.0100.05019.51
5.4.400.0030.04019.23
5.4.390.0030.04319.25
5.4.380.0000.04019.33
5.4.370.0030.04319.01
5.4.360.0000.04019.31
5.4.350.0030.03719.23
5.4.340.0030.03718.98
5.4.320.0000.04019.34
5.4.310.0100.04019.02
5.4.300.0000.04019.00
5.4.290.0030.03719.31
5.4.280.0070.04019.01
5.4.270.0030.03719.00
5.4.260.0030.03718.98
5.4.250.0070.03318.96
5.4.240.0000.04018.98
5.4.230.0030.05319.18
5.4.220.0070.03719.01
5.4.210.0100.07018.98
5.4.200.0100.07018.98
5.4.190.0170.05319.18
5.4.180.0130.06318.95
5.4.170.0070.07719.03
5.4.160.0000.07719.31
5.4.150.0070.04719.29
5.4.140.0030.07316.55
5.4.130.0070.07716.46
5.4.120.0100.06016.63
5.4.110.0100.07016.70
5.4.100.0030.05716.62
5.4.90.0070.07016.36
5.4.80.0030.07716.52
5.4.70.0030.07316.61
5.4.60.0100.07016.48
5.4.50.0030.07316.29
5.4.40.0130.07016.29
5.4.30.0170.03316.34
5.4.20.0130.06716.29
5.4.10.0100.07016.63
5.4.00.0100.06015.98
5.3.290.0000.04014.82
5.3.280.0030.08014.65
5.3.270.0030.08314.67
5.3.260.0100.04314.67
5.3.250.0070.07314.63
5.3.240.0030.08014.64
5.3.230.0070.07314.62
5.3.220.0170.06714.63
5.3.210.0100.05714.74
5.3.200.0130.06714.72
5.3.190.0070.07714.72
5.3.180.0070.07014.67
5.3.170.0030.04714.72
5.3.160.0130.07014.55
5.3.150.0130.06314.60
5.3.140.0070.07314.59
5.3.130.0070.07314.55
5.3.120.0070.07314.70
5.3.110.0030.08014.59
5.3.100.0030.07314.08
5.3.90.0100.07014.19
5.3.80.0130.05714.05
5.3.70.0070.04314.11
5.3.60.0030.07714.07
5.3.50.0130.06314.04
5.3.40.0100.07013.95
5.3.30.0100.06713.98
5.3.20.0070.06713.80
5.3.10.0100.06713.81
5.3.00.0100.07013.67
5.2.170.0030.06311.73
5.2.160.0070.05711.73
5.2.150.0070.06011.73
5.2.140.0070.06711.73
5.2.130.0030.05711.73
5.2.120.0070.06011.73
5.2.110.0100.05711.73
5.2.100.0170.05011.73
5.2.90.0030.06311.73
5.2.80.0100.05311.73
5.2.70.0100.05711.73
5.2.60.0000.04711.73
5.2.50.0100.05711.73
5.2.40.0000.06011.73
5.2.30.0100.02311.73
5.2.20.0000.03711.73
5.2.10.0030.06011.73
5.2.00.0000.06011.73
5.1.60.0030.04711.73
5.1.50.0100.04711.73
5.1.40.0070.05311.73
5.1.30.0030.05011.73
5.1.20.0070.05711.73
5.1.10.0100.04011.73
5.1.00.0030.05711.73
5.0.50.0100.03011.73
5.0.40.0070.04011.73
5.0.30.0070.06711.73
5.0.20.0000.05011.73
5.0.10.0000.02711.73
5.0.00.0000.06311.73
4.4.90.0100.03011.73
4.4.80.0070.03311.73
4.4.70.0070.02311.73
4.4.60.0030.03311.73
4.4.50.0030.03011.73
4.4.40.0000.06011.73
4.4.30.0000.04011.73
4.4.20.0000.02711.73
4.4.10.0030.03011.73
4.4.00.0030.05311.73
4.3.110.0030.03311.73
4.3.100.0030.04311.73
4.3.90.0070.02711.73
4.3.80.0100.04711.73
4.3.70.0000.03711.73
4.3.60.0030.03311.73
4.3.50.0030.03711.73
4.3.40.0000.04711.73
4.3.30.0030.03311.73
4.3.20.0000.04011.73
4.3.10.0000.03011.73
4.3.00.0000.03711.73

preferences:
42.33 ms | 401 KiB | 5 Q