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); } $i = 0; $it = (array)$it; if (!$assoc) { foreach ($it as $k => $v) { if ($k !== $i) { $assoc = true; break; } $i++; } } var_dump($assoc); $data = array(); foreach ($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\\\"/"); } } } /* $var = array( array( 'text', 1, 1.1, true, false, null, array(), new stdClass, ), array( '&\'/"' => "\r\n\t", ), array( '0' => 'hoge', '1' => 'foo', ), (object)array( '0' => 'hoge', '1' => 'foo', ), array( '0' => 'hoge', '2' => 'foo', ), (object)array( '0' => 'hoge', '2' => 'foo', ), ); var_dump(@json_encode($var)); */ var_dump(json_encode('1')); var_dump(_js_enc_value('1'));

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)
8.3.40.0040.01118.84
8.3.30.0150.00019.22
8.3.20.0030.00620.25
8.3.10.0050.00323.74
8.3.00.0000.00820.64
8.2.170.0120.00322.96
8.2.160.0070.00722.11
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0080.00017.63
8.2.110.0060.00620.52
8.2.100.0100.00317.91
8.2.90.0030.00519.23
8.2.80.0060.00317.97
8.2.70.0030.00617.75
8.2.60.0090.00018.03
8.2.50.0090.00018.07
8.2.40.0090.00018.22
8.2.30.0040.00418.18
8.2.20.0050.00317.66
8.2.10.0030.00517.73
8.2.00.0000.00817.86
8.1.270.0040.00423.71
8.1.260.0080.00026.35
8.1.250.0110.00428.09
8.1.240.0060.00323.86
8.1.230.0040.00820.89
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0030.00617.48
8.1.190.0000.00917.13
8.1.180.0040.00418.10
8.1.170.0080.00018.63
8.1.160.0070.00022.01
8.1.150.0090.00018.50
8.1.140.0000.00817.45
8.1.130.0000.00717.90
8.1.120.0040.00417.36
8.1.110.0040.00417.37
8.1.100.0000.00717.48
8.1.90.0060.00317.50
8.1.80.0030.00317.47
8.1.70.0000.00717.32
8.1.60.0090.00317.58
8.1.50.0030.00517.45
8.1.40.0040.00417.55
8.1.30.0040.00417.50
8.1.20.0040.00417.66
8.1.10.0040.00417.60
8.1.00.0000.00817.50
8.0.300.0000.00718.77
8.0.290.0030.00616.75
8.0.280.0050.00218.50
8.0.270.0000.00717.36
8.0.260.0070.00016.95
8.0.250.0070.00017.10
8.0.240.0110.00317.06
8.0.230.0000.00717.12
8.0.220.0030.00317.03
8.0.210.0040.00417.03
8.0.200.0070.00017.06
8.0.190.0060.00317.11
8.0.180.0000.00717.07
8.0.170.0060.00316.94
8.0.160.0040.00416.98
8.0.150.0050.00216.88
8.0.140.0060.00317.00
8.0.130.0000.00613.45
8.0.120.0000.00816.93
8.0.110.0050.00317.01
8.0.100.0040.00416.98
8.0.90.0000.00716.91
8.0.80.0060.00916.95
8.0.70.0040.00417.02
8.0.60.0070.00016.89
8.0.50.0040.00417.05
8.0.30.0040.01516.99
8.0.20.0050.01317.40
8.0.10.0050.00317.08
8.0.00.0050.01516.92
7.4.330.0020.00215.03
7.4.320.0000.00616.63
7.4.300.0000.00616.63
7.4.290.0070.00016.55
7.4.280.0000.00716.50
7.4.270.0000.00716.45
7.4.260.0040.00416.63
7.4.250.0080.00016.54
7.4.240.0080.00016.55
7.4.230.0070.00016.34
7.4.220.0060.01216.56
7.4.210.0080.00816.59
7.4.200.0000.00816.44
7.4.190.0030.00516.68
7.4.160.0060.00916.38
7.4.150.0130.00617.40
7.4.140.0120.00517.86
7.4.130.0060.01216.63
7.4.120.0070.01616.47
7.4.110.0090.00916.51
7.4.100.0150.00316.45
7.4.90.0180.00016.49
7.4.80.0130.00816.49
7.4.70.0070.01016.55
7.4.60.0090.00916.40
7.4.50.0050.00316.51
7.4.40.0070.00722.77
7.4.30.0070.01016.61
7.4.00.0070.01114.97
7.3.330.0030.00313.32
7.3.320.0030.00313.35
7.3.310.0000.00816.37
7.3.300.0040.00416.35
7.3.290.0180.00016.36
7.3.280.0120.00716.27
7.3.270.0160.00717.40
7.3.260.0130.00916.37
7.3.250.0060.01116.51
7.3.240.0120.00916.56
7.3.230.0110.00616.58
7.3.210.0040.01616.55
7.3.200.0060.01619.39
7.3.190.0080.00916.29
7.3.180.0040.01116.34
7.3.170.0120.00316.39
7.3.160.0130.00316.46
7.3.120.0070.01014.94
7.3.110.0070.01114.50
7.3.100.0090.00614.72
7.3.90.0030.01314.82
7.3.80.0030.01014.93
7.3.70.0100.00714.54
7.3.60.0000.00914.89
7.3.50.0080.00414.88
7.3.40.0040.01214.99
7.3.30.0100.00714.85
7.3.20.0070.00716.71
7.3.10.0090.00516.50
7.3.00.0080.00516.30
7.2.330.0030.01416.38
7.2.320.0130.00416.33
7.2.310.0170.00716.55
7.2.300.0000.02016.43
7.2.290.0060.01016.71
7.2.250.0040.01515.16
7.2.240.0100.01014.69
7.2.230.0040.01115.14
7.2.220.0080.00815.09
7.2.210.0060.01115.13
7.2.200.0100.00314.73
7.2.190.0030.01015.02
7.2.180.0040.00714.95
7.2.170.0070.01114.86
7.2.130.0120.00916.35
7.2.120.0130.00716.47
7.2.110.0130.01016.29
7.2.100.0100.00716.46
7.2.90.0060.00816.46
7.2.80.0070.00716.55
7.2.70.0120.00616.51
7.2.60.0040.01016.59
7.2.50.0120.00616.51
7.2.40.0120.00616.71
7.2.30.0090.00616.58
7.2.20.0130.00616.41
7.2.10.0030.01616.66
7.2.00.0100.00717.98
7.1.330.0070.01015.80
7.1.320.0080.00315.73
7.1.310.0110.00415.77
7.1.300.0100.00715.40
7.1.290.0040.00815.43
7.1.280.0070.01015.32
7.1.270.0000.01315.43
7.1.260.0060.01115.35
7.1.250.0060.00615.39
7.1.240.0070.01115.53
7.1.230.0100.00615.56
7.1.220.0030.01315.62
7.1.210.0080.00315.38
7.1.200.0070.00615.37
7.1.190.0090.00915.57
7.1.180.0100.00315.59
7.1.170.0160.00015.20
7.1.160.0160.00315.42
7.1.150.0190.00015.47
7.1.140.0110.00715.71
7.1.130.0090.00915.63
7.1.120.0160.00315.45
7.1.110.0070.00715.64
7.1.100.0080.00716.68
7.1.90.0100.00315.53
7.1.80.0130.00715.52
7.1.70.0080.00416.25
7.1.60.0050.01317.43
7.1.50.0070.00916.08
7.1.40.0100.00615.48
7.1.30.0120.00615.32
7.1.20.0130.00315.51
7.1.10.0100.00615.51
7.1.00.0080.04118.94
7.0.330.0130.00015.11
7.0.320.0060.00915.35
7.0.310.0070.00715.28
7.0.300.0160.00015.13
7.0.290.0040.01115.29
7.0.280.0060.00615.41
7.0.270.0060.00915.30
7.0.260.0030.01015.34
7.0.250.0110.00415.27
7.0.240.0120.00315.43
7.0.230.0100.00315.37
7.0.220.0030.01315.39
7.0.210.0090.00615.32
7.0.200.0060.00515.92
7.0.190.0110.00715.46
7.0.180.0140.00315.10
7.0.170.0100.00715.18
7.0.160.0070.01015.24
7.0.150.0120.00815.48
7.0.140.0070.04018.66
7.0.130.0120.00615.08
7.0.120.0030.01015.23
7.0.110.0130.00315.23
7.0.100.0130.00315.29
7.0.90.0300.03017.70
7.0.80.0330.03817.56
7.0.70.0270.03217.68
7.0.60.0290.02617.53
7.0.50.0370.04517.72
7.0.40.0080.04216.68
7.0.30.0020.04716.65
7.0.20.0100.02516.72
7.0.10.0030.04516.85
7.0.00.0050.02716.78
5.6.380.0060.00313.89
5.6.370.0130.01014.47
5.6.360.0120.01514.52
5.6.350.0080.02014.33
5.6.340.0130.01314.35
5.6.330.0170.00614.36
5.6.320.0110.01314.20
5.6.310.0150.00614.66
5.6.300.0170.00814.61
5.6.290.0160.00214.50
5.6.280.0030.04317.61
5.6.270.0230.00314.59
5.6.260.0230.00314.34
5.6.250.0180.00814.31
5.6.240.0110.04617.43
5.6.230.0060.05317.36
5.6.220.0080.03017.34
5.6.210.0110.04817.33
5.6.200.0140.04017.68
5.6.190.0100.04417.43
5.6.180.0130.03717.65
5.6.170.0090.03417.61
5.6.160.0070.02317.66
5.6.150.0100.02417.58
5.6.140.0100.04117.67
5.6.130.0060.04717.42
5.6.120.0110.04017.44
5.6.110.0060.03317.45
5.6.100.0090.04117.42
5.6.90.0100.04417.58
5.6.80.0080.03917.17
5.6.70.0070.03817.14
5.6.60.0050.03417.19
5.6.50.0030.03017.11
5.6.40.0050.02717.23
5.6.30.0050.02217.10
5.6.20.0060.03117.17
5.6.10.0000.02717.14
5.6.00.0030.02517.14
5.5.380.0040.04215.80
5.5.370.0060.03615.60
5.5.360.0070.04415.77
5.5.350.0080.04015.72
5.5.340.0000.03215.74
5.5.330.0060.04316.00
5.5.320.0100.02515.94
5.5.310.0060.04515.90
5.5.300.0080.04015.86
5.5.290.0070.03215.94
5.5.280.0050.04515.89
5.5.270.0060.02215.77
5.5.260.0030.04115.90
5.5.250.0120.02815.71
5.5.240.0030.04315.54
5.5.230.0070.04315.59
5.5.220.0050.04015.58
5.5.210.0050.02415.32
5.5.200.0060.02115.32
5.5.190.0020.03015.55
5.5.180.0030.02315.34
5.5.170.0040.00810.53
5.5.160.0020.02415.53
5.5.150.0080.01815.26
5.5.140.0050.02315.23
5.5.130.0030.02315.33
5.5.120.0070.02215.30
5.5.110.0050.02015.50
5.5.100.0120.01315.11
5.5.90.0050.03115.46
5.5.80.0100.03515.26
5.5.70.0070.04015.24
5.5.60.0100.03715.32
5.5.50.0060.02115.43
5.5.40.0030.03315.21
5.5.30.0000.02415.48
5.5.20.0070.02215.21
5.5.10.0080.04115.45
5.5.00.0040.02915.09
5.4.450.0070.04014.91
5.4.440.0090.03315.01
5.4.430.0050.03714.80
5.4.420.0070.04014.90
5.4.410.0050.02714.84
5.4.400.0090.03714.60
5.4.390.0040.02514.71
5.4.380.0070.04314.87
5.4.370.0020.03614.97
5.4.360.0090.02515.14
5.4.350.0070.02514.91
5.4.340.0120.02114.83
5.4.330.0120.00610.97
5.4.320.0120.01814.78
5.4.310.0100.01915.05
5.4.300.0060.02314.84
5.4.290.0080.02015.03
5.4.280.0100.02014.83
5.4.270.0080.02015.00
5.4.260.0080.02014.73
5.4.250.0090.03415.00
5.4.240.0060.03514.96
5.4.230.0080.02415.04
5.4.220.0070.02614.92
5.4.210.0080.04315.19
5.4.200.0070.01915.02
5.4.190.0050.02215.03
5.4.180.0070.02215.04
5.4.170.0090.02014.95
5.4.160.0070.01914.81
5.4.150.0020.02215.03
5.4.140.0060.01813.78
5.4.130.0070.02113.66
5.4.120.0040.02613.54
5.4.110.0020.02513.66
5.4.100.0040.02213.82
5.4.90.0040.02213.62
5.4.80.0070.01613.69
5.4.70.0080.01813.74
5.4.60.0080.01813.55
5.4.50.0080.02813.71
5.4.40.0080.01613.64
5.4.30.0080.01813.68
5.4.20.0040.02313.55
5.4.10.0060.01913.69
5.4.00.0110.01313.24
5.3.290.0040.02112.60
5.3.280.0100.04112.55
5.3.270.0030.02312.56
5.3.260.0040.02612.57
5.3.250.0050.01912.58
5.3.240.0060.02212.50
5.3.230.0050.02212.56
5.3.220.0070.02212.55
5.3.210.0030.02312.44
5.3.200.0060.02012.55
5.3.190.0030.02412.48
5.3.180.0050.02112.65
5.3.170.0020.02612.76
5.3.160.0050.02212.64
5.3.150.0080.02312.49
5.3.140.0050.02212.60
5.3.130.0050.02412.57
5.3.120.0100.02512.48
5.3.110.0050.02012.56
5.3.100.0060.01912.31
5.3.90.0030.02012.29
5.3.80.0050.01912.10
5.3.70.0100.03012.19
5.3.60.0050.01912.27
5.3.50.0070.01712.20
5.3.40.0050.02912.17
5.3.30.0040.02612.24
5.3.20.0040.01712.12
5.3.10.0060.02011.89
5.3.00.0040.03012.04
5.2.170.0040.01810.38
5.2.160.0040.01610.33
5.2.150.0020.01810.45
5.2.140.0030.01810.19
5.2.130.0020.01710.31
5.2.120.0060.01310.27
5.2.110.0080.03010.25
5.2.100.0070.02810.35
5.2.90.0050.03210.37
5.2.80.0070.03210.15
5.2.70.0060.02210.20
5.2.60.0090.03010.30
5.2.50.0070.02010.35
5.2.40.0020.03610.23
5.2.30.0020.02210.27
5.2.20.0030.01910.18
5.2.10.0040.0329.99
5.2.00.0040.0339.77
5.1.60.0020.0349.43
5.1.50.0020.0329.45
5.1.40.0040.0179.40
5.1.30.0100.0289.70
5.1.20.0060.0229.56
5.1.10.0040.0229.55
5.1.00.0070.0209.39
5.0.50.0050.0138.42
5.0.40.0020.0178.35
5.0.30.0080.0178.37
5.0.20.0100.0138.30
5.0.10.0020.0278.23
5.0.00.0070.0328.33
4.4.90.0040.0167.61
4.4.80.0000.0147.61
4.4.70.0020.0137.61
4.4.60.0040.0087.61
4.4.50.0020.0117.61
4.4.40.0030.0307.61
4.4.30.0000.0147.61
4.4.20.0040.0207.61
4.4.10.0040.0137.61
4.4.00.0020.0207.61
4.3.110.0020.0137.61
4.3.100.0000.0247.61
4.3.90.0070.0107.61
4.3.80.0050.0217.61
4.3.70.0020.0167.61
4.3.60.0070.0127.61
4.3.50.0020.0217.61
4.3.40.0050.0227.61
4.3.30.0040.0177.61
4.3.20.0020.0227.61
4.3.10.0000.0177.61
4.3.00.0050.0167.61

preferences:
41.76 ms | 400 KiB | 5 Q