3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!function_exists('json_encode')) { function json_encode($it) { if (!($assoc = is_object($it)) && !is_array($it)) { return _js_enc_value($it); } if ($assoc) { $it = get_object_vars($it); } else { $assoc = $it !== array_values($it); } $data = array(); foreach ($it as $k => $v) { $v = _js_enc_value($v); if ($assoc) { $k = (string)$k; if (preg_match('//u', $k)) { $k = _js_enc_value($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) && preg_match('//u', $value): return '"' . _js_uc_esc($value) . '"'; default: return $value; } } function _js_uc_esc($value) { $pattern = "@[\x08-\x0a\x0c\x0d\\\\\"/]|([^\x08-\x0a\x0c\x0d\x20-\x7f\\\\\"/])++@u"; return preg_replace_callback($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\x0a\x0c\x0d\\\"/"); } } } $var = array( array( 'text', 1, 1.1, true, false, null, array(), new stdClass, ), array( '&\'/"' => "\r\n\t", '' => '', ), array( '0' => 'hoge', '1' => 'foo', ), (object)array( '0' => 'hoge', '1' => 'foo', ), array( '0' => 'hoge', '2' => 'foo', ), (object)array( '0' => 'hoge', '2' => 'foo', ), ); var_dump(json_encode($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)
8.3.60.0110.01118.56
8.3.50.0090.00921.21
8.3.40.0060.01219.02
8.3.30.0070.01418.83
8.3.20.0080.00018.73
8.3.10.0040.01121.09
8.3.00.0000.00823.66
8.2.180.0040.01416.75
8.2.170.0150.00322.96
8.2.160.0030.01022.26
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0060.00326.16
8.2.120.0030.00619.36
8.2.110.0110.00021.03
8.2.100.0070.00417.84
8.2.90.0060.00317.63
8.2.80.0000.00818.71
8.2.70.0050.00517.63
8.2.60.0040.00417.63
8.2.50.0030.00518.07
8.2.40.0090.00018.15
8.2.30.0000.00721.22
8.2.20.0000.00917.89
8.2.10.0020.00517.70
8.2.00.0050.00317.93
8.1.280.0150.00025.92
8.1.270.0000.00823.99
8.1.260.0080.00026.35
8.1.250.0080.00028.09
8.1.240.0070.00321.92
8.1.230.0090.00321.03
8.1.220.0050.00318.68
8.1.210.0000.00818.77
8.1.200.0040.00417.35
8.1.190.0000.00817.66
8.1.180.0000.00818.10
8.1.170.0030.00618.79
8.1.160.0000.00718.87
8.1.150.0050.00218.70
8.1.140.0080.00017.42
8.1.130.0000.00717.78
8.1.120.0100.00017.44
8.1.110.0030.00617.52
8.1.100.0030.00617.44
8.1.90.0040.00417.54
8.1.80.0000.00817.54
8.1.70.0000.00717.50
8.1.60.0090.00017.56
8.1.50.0040.00417.59
8.1.40.0000.00817.59
8.1.30.0040.00417.67
8.1.20.0030.00517.62
8.1.10.0080.00017.62
8.1.00.0000.00817.55
8.0.300.0000.00720.13
8.0.290.0050.00316.88
8.0.280.0000.00818.48
8.0.270.0070.00017.26
8.0.260.0000.00616.95
8.0.250.0040.00416.97
8.0.240.0060.00317.08
8.0.230.0040.00317.07
8.0.220.0030.00316.90
8.0.210.0040.00417.05
8.0.200.0030.00317.04
8.0.190.0040.00417.13
8.0.180.0000.00716.97
8.0.170.0060.00317.03
8.0.160.0030.00316.98
8.0.150.0000.00816.92
8.0.140.0040.00416.97
8.0.130.0000.00613.44
8.0.120.0070.00017.00
8.0.110.0030.00516.85
8.0.100.0030.00316.99
8.0.90.0000.00716.92
8.0.80.0060.01017.00
8.0.70.0040.00616.91
8.0.60.0050.00316.89
8.0.50.0000.00817.02
8.0.30.0120.01117.25
8.0.20.0050.01417.40
8.0.10.0040.00417.19
8.0.00.0120.00716.97
7.4.330.0000.00514.66
7.4.320.0030.00316.66
7.4.300.0000.00716.68
7.4.290.0050.00316.59
7.4.280.0070.00016.50
7.4.270.0030.00316.69
7.4.260.0050.00013.31
7.4.250.0030.00516.53
7.4.240.0040.00416.56
7.4.230.0050.00216.41
7.4.220.0040.01516.52
7.4.210.0060.01116.59
7.4.200.0070.00016.74
7.4.190.0030.00316.84
7.4.160.0000.01516.57
7.4.150.0150.00317.40
7.4.140.0040.01417.86
7.4.130.0080.00916.55
7.4.120.0090.00816.50
7.4.110.0090.01216.82
7.4.100.0130.00916.64
7.4.90.0140.00416.55
7.4.80.0000.02019.39
7.4.70.0070.00816.63
7.4.60.0110.00616.46
7.4.50.0090.00016.49
7.4.40.0030.01522.52
7.4.30.0130.00816.35
7.4.00.0040.01115.02
7.3.330.0000.00513.32
7.3.320.0030.00313.23
7.3.310.0000.00716.38
7.3.300.0000.00716.23
7.3.290.0060.01316.33
7.3.280.0080.00916.36
7.3.270.0070.01017.40
7.3.260.0070.01118.24
7.3.250.0120.00616.66
7.3.240.0140.00316.66
7.3.230.0070.01316.39
7.3.210.0110.00616.58
7.3.200.0150.00919.39
7.3.190.0060.01116.48
7.3.180.0090.00616.34
7.3.170.0120.00916.62
7.3.160.0090.00616.68
7.3.120.0110.00414.87
7.2.330.0120.00616.47
7.2.320.0130.00716.68
7.2.310.0110.01416.50
7.2.300.0070.01016.39
7.2.290.0060.01316.54
7.2.110.0160.00616.18
7.2.100.0220.00016.27
7.2.90.0080.00816.27
7.2.80.0120.00616.26
7.2.70.0080.00616.64
7.2.60.0060.00916.45
7.2.50.0060.01016.81
7.2.40.0090.00916.75
7.2.30.0120.00316.64
7.2.20.0190.00316.54
7.2.10.0090.00616.82
7.2.00.0080.00818.15
7.1.230.0180.00415.60
7.1.220.0090.00915.41
7.1.210.0080.00815.32
7.1.200.0060.00815.57
7.1.190.0120.00315.32
7.1.180.0120.00315.74
7.1.170.0130.00315.80
7.1.160.0160.00015.45
7.1.150.0170.00315.45
7.1.140.0140.00315.19
7.1.130.0090.00915.45
7.1.120.0160.00015.52
7.1.110.0130.00315.49
7.1.100.0120.00116.87
7.1.90.0150.01015.37
7.1.80.0190.01215.48
7.1.70.0000.01416.07
7.1.60.0150.00617.39
7.1.50.0120.01716.25
7.1.40.0120.01215.41
7.1.30.0180.01515.84
7.1.20.0220.01315.86
7.1.10.0180.00915.61
7.1.00.0070.03018.80
7.0.310.0070.00314.96
7.0.300.0090.00615.20
7.0.290.0030.00915.17
7.0.280.0000.01315.04
7.0.270.0100.00315.13
7.0.260.0080.00614.77
7.0.250.0060.00915.21
7.0.240.0140.00615.29
7.0.230.0110.01115.03
7.0.220.0160.00915.04
7.0.210.0120.00815.11
7.0.200.0050.00515.69
7.0.190.0160.00615.20
7.0.180.0140.01315.39
7.0.170.0160.01015.20
7.0.160.0130.01315.43
7.0.150.0160.01215.33
7.0.140.0130.04018.62
7.0.130.0190.00615.11
7.0.120.0240.00315.41
7.0.110.0100.04917.50
7.0.100.0130.03417.46
7.0.90.0150.02917.61
7.0.80.0170.03517.66
7.0.70.0120.04417.56
7.0.60.0180.02317.62
7.0.50.0140.04117.94
7.0.40.0070.04716.84
7.0.30.0110.04916.80
7.0.20.0140.04116.74
7.0.10.0080.05116.79
7.0.00.0120.04516.74
5.6.380.0140.00314.28
5.6.370.0060.00913.77
5.6.360.0090.00614.73
5.6.350.0060.00914.34
5.6.340.0080.00514.29
5.6.330.0080.00514.51
5.6.320.0060.00914.36
5.6.310.0070.01113.95
5.6.300.0280.00314.32
5.6.290.0250.00014.12
5.6.280.0110.04117.78
5.6.270.0180.00914.37
5.6.260.0120.03617.35
5.6.250.0120.03917.46
5.6.240.0140.03917.42
5.6.230.0110.04717.32
5.6.220.0090.04317.41
5.6.210.0090.04917.34
5.6.200.0130.04417.69
5.6.190.0200.04017.79
5.6.180.0100.04417.67
5.6.170.0100.02717.61
5.6.160.0130.04317.63
5.6.150.0100.02817.65
5.6.140.0110.04217.76
5.6.130.0110.04917.82
5.6.120.0170.03917.76
5.6.110.0050.04517.42
5.6.100.0100.02317.60
5.6.90.0060.03117.54
5.6.80.0080.02817.09
5.6.70.0080.04117.25
5.6.60.0080.04217.11
5.6.50.0090.04217.13
5.6.40.0070.04217.21
5.6.30.0110.02317.37
5.6.20.0130.04117.36
5.6.10.0050.04517.44
5.6.00.0110.03817.19
5.5.380.0090.02815.76
5.5.370.0080.04515.69
5.5.360.0130.04115.93
5.5.350.0110.04415.81
5.5.340.0170.03416.08
5.5.330.0080.03216.11
5.5.320.0080.04515.98
5.5.310.0070.03215.80
5.5.300.0070.03216.02
5.5.290.0110.04216.08
5.5.280.0090.04515.90
5.5.270.0060.04515.93
5.5.260.0080.04216.07
5.5.250.0080.03915.83
5.5.240.0060.03515.83
5.5.230.0050.04615.63
5.5.220.0130.03315.56
5.5.210.0150.03615.57
5.5.200.0080.04315.54
5.5.190.0090.04115.70
5.5.180.0120.03715.73
5.5.170.0040.01214.28
5.5.160.0080.04215.62
5.5.150.0050.04115.56
5.5.140.0120.03615.60
5.5.130.0070.03815.74
5.5.120.0070.04015.52
5.5.110.0040.03615.46
5.5.100.0060.04015.53
5.5.90.0050.04615.44
5.5.80.0050.02515.61
5.5.70.0160.02815.49
5.5.60.0100.03715.39
5.5.50.0100.03815.48
5.5.40.0130.03615.53
5.5.30.0080.04115.28
5.5.20.0090.04115.28
5.5.10.0060.04115.37
5.5.00.0060.04315.51
5.4.450.0060.04615.21
5.4.440.0140.03715.10
5.4.430.0020.04915.31
5.4.420.0120.04015.38
5.4.410.0090.03814.94
5.4.400.0110.03815.06
5.4.390.0060.04014.79
5.4.380.0030.03014.93
5.4.370.0090.02514.93
5.4.360.0090.03614.91
5.4.350.0030.03814.93
5.4.340.0080.03815.01
5.4.330.0000.01510.80
5.4.320.0050.03014.83
5.4.310.0100.03115.05
5.4.300.0080.03815.05
5.4.290.0030.04315.05
5.4.280.0090.03814.91
5.4.270.0060.03815.07
5.4.260.0130.03514.94
5.4.250.0050.04114.94
5.4.240.0120.03215.02
5.4.230.0080.02514.81
5.4.220.0090.03614.85
5.4.210.0060.02715.12
5.4.200.0080.04014.78
5.4.190.0100.03815.02
5.4.180.0030.04115.00
5.4.170.0070.03315.02
5.4.160.0050.02514.82
5.4.150.0080.03314.94
5.4.140.0130.02813.70
5.4.130.0150.01513.66
5.4.120.0080.03313.47
5.4.110.0070.03713.58
5.4.100.0050.03913.63
5.4.90.0030.04113.67
5.4.80.0060.02513.64
5.4.70.0110.03513.52
5.4.60.0080.03613.52
5.4.50.0050.04313.69
5.4.40.0080.02813.65
5.4.30.0030.03813.54
5.4.20.0080.03413.51
5.4.10.0100.03813.50
5.4.00.0070.03313.21
5.3.290.0100.03712.74
5.3.280.0050.04012.57
5.3.270.0030.04312.49
5.3.260.0070.04312.69
5.3.250.0070.04112.66
5.3.240.0110.03112.53
5.3.230.0100.03712.63
5.3.220.0060.03812.59
5.3.210.0060.04112.59
5.3.200.0070.04212.53
5.3.190.0070.02412.70
5.3.180.0050.04112.50
5.3.170.0100.02012.68
5.3.160.0050.03812.61
5.3.150.0110.02612.77
5.3.140.0070.03812.62
5.3.130.0080.03612.66
5.3.120.0050.02312.56
5.3.110.0030.04212.59
5.3.100.0030.04512.44
5.3.90.0040.03912.20
5.3.80.0100.03512.32
5.3.70.0090.03812.43
5.3.60.0030.04012.31
5.3.50.0090.03712.28
5.3.40.0070.02712.14
5.3.30.0030.04012.35
5.3.20.0080.03711.98
5.3.10.0080.03312.08
5.3.00.0050.03312.00
5.2.170.0090.02810.83
5.2.160.0060.03010.83
5.2.150.0040.03210.85
5.2.140.0050.03310.78
5.2.130.0050.03410.79
5.2.120.0060.03010.80
5.2.110.0030.02310.68
5.2.100.0030.03510.64
5.2.90.0110.02310.61
5.2.80.0080.03010.76
5.2.70.0030.03210.58
5.2.60.0020.03510.71
5.2.50.0070.03110.73
5.2.40.0100.02810.75
5.2.30.0030.03610.74
5.2.20.0050.01910.51
5.2.10.0100.02710.53
5.2.00.0070.02710.47
5.1.60.0050.02710.36
5.1.50.0060.02810.36
5.1.40.0060.02710.37
5.1.30.0100.01810.38
5.1.20.0030.03310.40
5.1.10.0060.02110.36
5.1.00.0020.03410.36
5.0.50.0030.02410.36
5.0.40.0030.02310.36
5.0.30.0040.03310.36
5.0.20.0070.01810.36
5.0.10.0020.02310.36
5.0.00.0030.03110.36
4.4.90.0050.01510.36
4.4.80.0050.01710.36
4.4.70.0020.02010.36
4.4.60.0060.01610.36
4.4.50.0040.01810.36
4.4.40.0070.02510.36
4.4.30.0030.01910.36
4.4.20.0030.02110.36
4.4.10.0030.02010.36
4.4.00.0040.02610.36
4.3.110.0010.02010.36
4.3.100.0050.01710.36
4.3.90.0030.01810.36
4.3.80.0030.03010.36
4.3.70.0050.01610.36
4.3.60.0030.01710.36
4.3.50.0040.01810.36
4.3.40.0020.02310.36
4.3.30.0030.01810.36
4.3.20.0030.01810.36
4.3.10.0020.02010.36
4.3.00.0030.01810.36

preferences:
45.23 ms | 401 KiB | 5 Q