3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!function_exists('json_encode')) { function json_encode($it) { if (!$is_arr = 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; } $i++; } if (!$is_arr) { $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'; } } } $var = array( 0 => array('text', 1, 1.1, true, false, null, array(), new stdClass), 2 => array('a' => 'hoge', 'b' => 'foo'), ); echo json_encode($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)
8.3.60.0090.00916.50
8.3.50.0080.00818.32
8.3.40.0070.01018.57
8.3.30.0090.00618.84
8.3.20.0000.00818.59
8.3.10.0040.00418.73
8.3.00.0080.00019.38
8.2.180.0100.01316.75
8.2.170.0110.00422.96
8.2.160.0080.00819.00
8.2.150.0000.00824.18
8.2.140.0120.00424.66
8.2.130.0060.00326.16
8.2.120.0040.00420.88
8.2.110.0120.00620.45
8.2.100.0030.00917.64
8.2.90.0030.00617.75
8.2.80.0030.00518.91
8.2.70.0040.00417.75
8.2.60.0000.00817.63
8.2.50.0000.00817.91
8.2.40.0040.00420.08
8.2.30.0080.00017.68
8.2.20.0000.00917.60
8.2.10.0000.00717.84
8.2.00.0040.00417.70
8.1.280.0150.00325.92
8.1.270.0050.00323.99
8.1.260.0060.01326.35
8.1.250.0140.00028.09
8.1.240.0000.01023.91
8.1.230.0110.00021.04
8.1.220.0050.00318.71
8.1.210.0050.00318.77
8.1.200.0060.00317.22
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0030.00617.62
8.1.160.0020.00518.93
8.1.150.0000.00718.68
8.1.140.0040.00417.40
8.1.130.0030.00317.88
8.1.120.0000.00817.54
8.1.110.0000.00717.37
8.1.100.0000.00717.39
8.1.90.0030.00617.46
8.1.80.0040.00417.48
8.1.70.0090.00017.47
8.1.60.0000.01017.61
8.1.50.0030.00617.47
8.1.40.0080.00017.45
8.1.30.0000.00817.61
8.1.20.0000.00717.66
8.1.10.0000.00717.64
8.1.00.0050.00317.56
8.0.300.0000.00718.77
8.0.290.0000.00816.75
8.0.280.0030.00318.52
8.0.270.0000.00817.30
8.0.260.0030.00316.77
8.0.250.0030.00516.85
8.0.240.0000.00717.03
8.0.230.0000.00717.03
8.0.220.0040.00416.96
8.0.210.0000.00716.89
8.0.200.0000.00716.90
8.0.190.0000.00716.89
8.0.180.0040.00416.91
8.0.170.0000.00716.88
8.0.160.0000.00817.04
8.0.150.0030.00616.80
8.0.140.0030.00516.88
8.0.130.0030.00313.43
8.0.120.0060.00316.80
8.0.110.0000.00716.96
8.0.100.0080.00016.75
8.0.90.0080.00016.75
8.0.80.0070.01016.90
8.0.70.0020.00516.84
8.0.60.0080.00016.74
8.0.50.0030.00516.89
8.0.30.0130.00617.46
8.0.20.0090.00917.25
8.0.10.0040.00417.08
8.0.00.0110.00816.77
7.4.330.0050.00013.02
7.4.320.0000.00616.68
7.4.300.0000.00616.48
7.4.290.0000.00716.46
7.4.280.0040.00416.57
7.4.270.0050.00316.63
7.4.260.0040.00413.21
7.4.250.0030.00516.39
7.4.240.0000.00816.57
7.4.230.0030.00316.46
7.4.220.0060.01216.63
7.4.210.0030.01616.56
7.4.200.0000.00716.45
7.4.190.0000.00716.60
7.4.160.0060.01616.59
7.4.150.0140.00416.48
7.4.140.0140.01716.52
7.4.130.0090.00916.45
7.4.120.0100.00716.72
7.4.110.0090.00916.51
7.4.100.0140.00916.63
7.4.90.0150.00316.39
7.4.80.0000.01719.39
7.4.70.0100.00716.71
7.4.60.0090.00616.52
7.4.50.0110.00316.46
7.4.40.0070.00716.46
7.4.30.0140.00716.58
7.4.10.0100.00815.20
7.4.00.0100.00614.87
7.3.330.0030.00313.15
7.3.320.0030.00513.20
7.3.310.0070.00016.27
7.3.300.0030.00316.15
7.3.290.0050.00916.22
7.3.280.0090.00916.25
7.3.270.0070.01016.41
7.3.260.0120.00616.32
7.3.250.0120.01116.39
7.3.240.0130.00316.55
7.3.230.0180.00416.59
7.3.210.0110.00716.53
7.3.200.0030.01616.23
7.3.190.0100.00716.26
7.3.180.0100.00616.39
7.3.170.0060.01016.27
7.3.160.0100.01616.24
7.3.130.0070.01214.86
7.3.120.0080.00814.93
7.3.110.0100.00914.87
7.3.100.0080.00714.56
7.3.90.0080.00514.72
7.3.80.0070.00514.68
7.3.70.0050.00714.75
7.3.60.0080.00414.84
7.3.50.0050.00814.72
7.3.40.0070.00914.71
7.3.30.0050.00914.77
7.3.20.0070.00616.45
7.3.10.0090.00516.38
7.3.00.0050.00716.68
7.2.330.0140.00316.71
7.2.320.0080.00916.61
7.2.310.0030.01416.84
7.2.300.0130.01016.70
7.2.290.0030.01416.68
7.2.260.0100.01015.07
7.2.250.0080.00915.00
7.2.240.0090.00714.88
7.2.230.0080.00815.05
7.2.220.0100.00514.92
7.2.210.0060.00414.87
7.2.200.0050.01115.18
7.2.190.0030.01214.83
7.2.180.0110.00115.08
7.2.170.0070.00814.95
7.2.160.0060.01214.88
7.2.150.0050.01216.87
7.2.140.0050.00716.79
7.2.130.0060.00916.75
7.2.120.0050.01116.93
7.2.110.0050.01116.94
7.2.100.0050.00816.83
7.2.90.0070.00816.83
7.2.80.0050.00816.96
7.2.70.0010.01316.89
7.2.60.0040.01016.70
7.2.50.0050.00816.75
7.2.40.0050.01016.98
7.2.30.0020.01416.93
7.2.20.0090.00816.78
7.2.10.0080.00516.86
7.2.00.0080.00716.76
7.1.330.0000.01415.70
7.1.320.0050.00715.82
7.1.310.0080.00515.78
7.1.300.0080.00515.81
7.1.290.0080.00615.76
7.1.280.0050.01015.54
7.1.270.0040.01015.66
7.1.260.0050.01015.68
7.1.250.0090.00615.74
7.1.240.0040.01115.70
7.1.230.0050.01315.70
7.1.220.0010.00815.66
7.1.210.0000.01215.77
7.1.200.0080.00415.85
7.1.190.0050.01015.86
7.1.180.0050.00715.83
7.1.170.0070.00515.73
7.1.160.0090.00315.76
7.1.150.0020.01215.69
7.1.140.0030.01215.76
7.1.130.0040.00915.75
7.1.120.0050.00515.69
7.1.110.0070.00615.75
7.1.100.0040.01016.38
7.1.90.0050.00715.83
7.1.80.0070.00715.75
7.1.70.0090.00916.20
7.1.60.0050.01216.96
7.1.50.0050.01116.15
7.1.40.0040.01115.72
7.1.30.0060.00615.62
7.1.20.0050.00915.78
7.1.10.0050.01015.71
7.1.00.0040.02017.95
7.0.330.0030.00815.34
7.0.320.0040.00915.18
7.0.310.0110.00515.12
7.0.300.0050.00815.29
7.0.290.0030.01015.38
7.0.280.0050.00915.34
7.0.270.0040.00715.19
7.0.260.0070.00415.17
7.0.250.0030.01215.52
7.0.240.0020.00915.41
7.0.230.0070.00415.36
7.0.220.0030.01415.35
7.0.210.0060.00915.53
7.0.200.0060.00915.85
7.0.190.0040.01015.36
7.0.180.0080.00515.22
7.0.170.0030.00915.29
7.0.160.0070.00715.42
7.0.150.0040.00715.38
7.0.140.0030.03017.55
7.0.130.0060.00615.24
7.0.120.0010.03317.67
7.0.110.0060.00615.53
7.0.100.0090.00315.33
7.0.90.0290.03216.87
7.0.80.0190.03416.88
7.0.70.0200.02816.77
7.0.60.0230.03616.91
7.0.50.0180.03317.08
7.0.40.0080.03315.61
7.0.30.0060.02915.69
7.0.20.0030.03815.53
7.0.10.0080.03215.63
7.0.00.0080.03115.57
5.6.400.0080.00514.02
5.6.390.0050.00914.41
5.6.380.0050.00914.29
5.6.370.0080.00414.25
5.6.360.0080.00414.39
5.6.350.0040.01214.65
5.6.340.0060.00814.30
5.6.330.0030.01014.31
5.6.320.0050.00814.17
5.6.310.0090.00614.63
5.6.300.0040.00714.50
5.6.290.0120.00314.30
5.6.280.0040.02816.58
5.6.270.0050.00514.37
5.6.260.0020.01414.21
5.6.250.0050.01114.28
5.6.240.0060.02116.53
5.6.230.0150.02416.51
5.6.220.0060.02116.44
5.6.210.0120.02016.44
5.6.200.0090.03016.73
5.6.190.0050.02016.61
5.6.180.0040.03416.66
5.6.170.0020.03716.59
5.6.160.0030.02916.45
5.6.150.0090.02716.70
5.6.140.0030.03216.51
5.6.130.0080.03116.70
5.6.120.0060.02516.69
5.6.110.0060.03016.72
5.6.100.0140.02816.72
5.6.90.0100.02916.49
5.6.80.0110.02216.35
5.6.70.0040.02516.37
5.6.60.0090.02416.37
5.6.50.0070.03316.24
5.6.40.0030.03416.32
5.6.30.0000.03016.31
5.6.20.0080.02716.35
5.6.10.0030.02816.21
5.6.00.0080.02516.35
5.5.380.0040.03116.33
5.5.370.0040.03316.35
5.5.360.0040.02316.32
5.5.350.0110.02616.18
5.5.340.0060.03116.57
5.5.330.0070.03216.54
5.5.320.0070.02016.34
5.5.310.0070.03216.44
5.5.300.0100.02816.32
5.5.290.0090.02716.47
5.5.280.0060.03416.49
5.5.270.0070.03216.42
5.5.260.0050.03216.27
5.5.250.0110.02816.36
5.5.240.0080.02716.17
5.5.230.0090.02816.26
5.5.220.0050.02816.18
5.5.210.0040.01716.13
5.5.200.0090.02316.12
5.5.190.0050.03616.16
5.5.180.0090.02216.16
5.5.170.0030.00814.24
5.5.160.0040.03316.04
5.5.150.0120.02516.08
5.5.140.0040.02816.21
5.5.130.0070.03116.24
5.5.120.0060.02916.08
5.5.110.0080.02816.25
5.5.100.0040.03516.21
5.5.90.0060.02216.13
5.5.80.0070.02515.90
5.5.70.0060.02416.11
5.5.60.0050.03416.22
5.5.50.0110.02516.18
5.5.40.0060.02616.19
5.5.30.0090.02116.05
5.5.20.0090.02916.00
5.5.10.0090.02815.93
5.5.00.0050.02716.00
5.4.450.0060.02914.54
5.4.440.0040.03414.42
5.4.430.0020.03514.51
5.4.420.0100.02714.45
5.4.410.0080.01714.46
5.4.400.0090.02614.31
5.4.390.0090.02414.37
5.4.380.0070.02814.43
5.4.370.0060.02614.31
5.4.360.0110.01914.40
5.4.350.0070.02714.41
5.4.340.0040.02214.40
5.4.330.0020.00912.04
5.4.320.0010.02114.38
5.4.310.0050.02914.31
5.4.300.0040.02114.42
5.4.290.0030.03014.32
5.4.280.0030.03314.34
5.4.270.0040.02914.42
5.4.260.0070.02714.40
5.4.250.0040.02414.37
5.4.240.0020.03114.37
5.4.230.0080.02414.30
5.4.220.0030.03014.40
5.4.210.0060.01714.38
5.4.200.0040.02914.31
5.4.190.0030.03214.40
5.4.180.0040.01814.42
5.4.170.0040.03614.40
5.4.160.0070.02414.33
5.4.150.0030.02314.30
5.4.140.0040.02413.51
5.4.130.0090.01213.50
5.4.120.0040.01513.50
5.4.110.0030.01713.54
5.4.100.0050.01713.49
5.4.90.0040.01513.51
5.4.80.0040.01613.54
5.4.70.0010.01813.53
5.4.60.0010.01713.47
5.4.50.0060.01913.48
5.4.40.0050.01213.47
5.4.30.0020.03213.51
5.4.20.0040.02813.47
5.4.10.0010.02413.49
5.4.00.0020.01613.25
5.3.290.0020.03012.95
5.3.280.0050.02612.89
5.3.270.0030.01512.93
5.3.260.0020.02112.94
5.3.250.0010.02112.93
5.3.240.0050.01512.94
5.3.230.0060.02212.88
5.3.220.0020.01712.88
5.3.210.0020.01712.91
5.3.200.0030.01512.93
5.3.190.0030.01712.92
5.3.180.0030.01612.88
5.3.170.0070.01212.91
5.3.160.0030.01612.91
5.3.150.0040.02512.89
5.3.140.0040.01612.91
5.3.130.0050.02312.88
5.3.120.0040.02212.86
5.3.110.0030.01712.87
5.3.100.0020.02412.74
5.3.90.0020.01712.74
5.3.80.0060.02112.72
5.3.70.0080.01412.70
5.3.60.0020.01812.68
5.3.50.0050.01512.70
5.3.40.0020.01812.68
5.3.30.0050.01612.72
5.3.20.0040.01312.60
5.3.10.0030.01612.56
5.3.00.0060.02612.55
5.2.170.0030.02711.19
5.2.160.0000.03011.04
5.2.150.0030.03011.16
5.2.140.0000.03311.27
5.2.130.0000.03011.04
5.2.120.0000.03011.23
5.2.110.0030.03011.14
5.2.100.0030.04011.03
5.2.90.0000.03011.12
5.2.80.0030.03011.19
5.2.70.0000.03311.18
5.2.60.0000.03011.18
5.2.50.0000.03011.06
5.2.40.0070.03011.15
5.2.30.0030.02710.93
5.2.20.0000.03011.05
5.2.10.0000.03010.91
5.2.00.0030.02710.68
5.1.60.0000.03320.21
5.1.50.0070.02320.10
5.1.40.0030.04720.12
5.1.30.0000.04020.55
5.1.20.0100.02320.39
5.1.10.0100.02320.07
5.1.00.0000.04020.14
5.0.50.0000.02717.87
5.0.40.0070.02017.74
5.0.30.0070.03017.43
5.0.20.0030.02317.51
5.0.10.0000.03717.27
5.0.00.0270.04787.27
4.4.90.0070.01314.32
4.4.80.0000.02014.33
4.4.70.0000.02314.31
4.4.60.0100.02314.34
4.4.50.0030.03014.37
4.4.40.0070.04314.40
4.4.30.0030.02014.41
4.4.20.0030.01714.39
4.4.10.0000.02314.41
4.4.00.0030.02714.39
4.3.110.0000.02014.47
4.3.100.0030.01714.50
4.3.90.0070.02314.45
4.3.80.0170.02747.73
4.3.70.0000.02014.54
4.3.60.0000.02314.50
4.3.50.0070.03014.52
4.3.40.0000.06014.53
4.3.30.0000.04013.24
4.3.20.0070.02013.00
4.3.10.0100.03313.29
4.3.00.0100.03713.20

preferences:
45.17 ms | 401 KiB | 5 Q