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++; } } $data = array(); foreach ($it as $k => $v) { $v = _js_enc_value($v); if ($assoc) { $k = _js_enc_value($v); $data[] = $k . ':' . $v; } else { $data[] = $v; } } if ($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'; } } } $var = array( array( 'text', 1, 1.1, true, false, null, array(), new stdClass, fopen('php://stdin', 'r'), ), array( '0' => 'hoge', '1' => 'foo', ), (object)array( '0' => 'hoge', '1' => 'foo', ), array( '0' => 'hoge', '2' => 'foo', ), (object)array( '0' => 'hoge', '2' => 'foo', ), ); var_dump(json_encode($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)
8.3.60.0070.00716.63
8.3.50.0090.01022.06
8.3.40.0090.00619.02
8.3.30.0130.00719.17
8.3.20.0080.00020.07
8.3.10.0050.00323.52
8.3.00.0040.00419.38
8.2.180.0060.01016.88
8.2.170.0060.01522.96
8.2.160.0180.00320.32
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00422.16
8.2.110.0060.00322.18
8.2.100.0030.01018.02
8.2.90.0030.00519.29
8.2.80.0000.00817.97
8.2.70.0030.00717.63
8.2.60.0000.00817.93
8.2.50.0050.00318.07
8.2.40.0030.00520.01
8.2.30.0050.00319.75
8.2.20.0040.00417.81
8.2.10.0000.00718.24
8.2.00.0060.00317.72
8.1.280.0110.00425.92
8.1.270.0090.00623.96
8.1.260.0060.00326.35
8.1.250.0030.00628.09
8.1.240.0000.00923.92
8.1.230.0090.00319.20
8.1.220.0030.00517.74
8.1.210.0080.00018.77
8.1.200.0100.00017.35
8.1.190.0040.00417.35
8.1.180.0070.00318.10
8.1.170.0000.00818.68
8.1.160.0000.00722.02
8.1.150.0000.00818.68
8.1.140.0040.00417.51
8.1.130.0030.00317.88
8.1.120.0040.00417.43
8.1.110.0030.00517.39
8.1.100.0030.00617.56
8.1.90.0040.00417.43
8.1.80.0070.00017.40
8.1.70.0000.00717.38
8.1.60.0080.00017.64
8.1.50.0080.00017.62
8.1.40.0030.00617.60
8.1.30.0040.00417.63
8.1.20.0030.00517.71
8.1.10.0050.00317.50
8.1.00.0000.00817.49
8.0.300.0000.00818.77
8.0.290.0040.00417.18
8.0.280.0040.00418.48
8.0.270.0070.00017.36
8.0.260.0030.00317.38
8.0.250.0000.00717.00
8.0.240.0040.00417.11
8.0.230.0040.00417.07
8.0.220.0030.00317.10
8.0.210.0030.00317.00
8.0.200.0030.00317.11
8.0.190.0040.00417.18
8.0.180.0040.00417.06
8.0.170.0040.00417.12
8.0.160.0000.00717.02
8.0.150.0030.00517.03
8.0.140.0040.00417.02
8.0.130.0000.00613.59
8.0.120.0080.00017.08
8.0.110.0000.00716.98
8.0.100.0040.00417.09
8.0.90.0080.00016.93
8.0.80.0140.00717.09
8.0.70.0040.00416.94
8.0.60.0080.00016.97
8.0.50.0040.00416.85
8.0.30.0150.00817.11
8.0.20.0160.00617.40
8.0.10.0000.00817.12
8.0.00.0110.00816.85
7.4.330.0000.00515.04
7.4.320.0000.00716.55
7.4.300.0050.00316.64
7.4.290.0000.00716.63
7.4.280.0000.00716.55
7.4.270.0000.00716.55
7.4.260.0000.00716.44
7.4.250.0000.00716.59
7.4.240.0050.00316.60
7.4.230.0030.00316.38
7.4.220.0060.01016.59
7.4.210.0100.00616.57
7.4.200.0000.00716.41
7.4.190.0030.00316.72
7.4.160.0060.01316.45
7.4.150.0060.01217.40
7.4.140.0100.00717.86
7.4.130.0050.01216.54
7.4.120.0140.00616.62
7.4.110.0060.01116.58
7.4.100.0070.01416.57
7.4.90.0060.01216.69
7.4.80.0090.01219.39
7.4.70.0040.01316.75
7.4.60.0110.00716.54
7.4.50.0000.00816.55
7.4.40.0060.01216.43
7.4.30.0090.01216.57
7.4.10.0060.00914.75
7.4.00.0080.00814.98
7.3.330.0040.00213.37
7.3.320.0030.00313.27
7.3.310.0070.00016.41
7.3.300.0030.00516.29
7.3.290.0080.00816.40
7.3.280.0080.00916.41
7.3.270.0060.01017.40
7.3.260.0130.00316.56
7.3.250.0060.01216.45
7.3.240.0140.00616.54
7.3.230.0070.01016.39
7.3.210.0070.01016.51
7.3.200.0100.01019.39
7.3.190.0120.00916.50
7.3.180.0110.00716.53
7.3.170.0090.00616.39
7.3.160.0100.00716.26
7.3.130.0090.00614.80
7.3.120.0090.00914.68
7.3.110.0050.01114.72
7.3.100.0090.00615.04
7.3.90.0050.01114.72
7.3.80.0110.00314.80
7.3.70.0110.00514.80
7.3.60.0040.01114.82
7.3.50.0070.00514.79
7.3.40.0050.00914.60
7.3.30.0020.00914.63
7.3.20.0040.00816.56
7.3.10.0030.01016.40
7.3.00.0050.00716.59
7.2.330.0160.00616.68
7.2.320.0090.01516.54
7.2.310.0030.01316.68
7.2.300.0110.01116.46
7.2.290.0160.00316.57
7.2.260.0070.01015.17
7.2.250.0080.01114.85
7.2.240.0090.00914.97
7.2.230.0080.00715.00
7.2.220.0070.00415.10
7.2.210.0070.00615.01
7.2.200.0060.00715.11
7.2.190.0080.00714.85
7.2.180.0060.00714.95
7.2.170.0060.00814.95
7.2.160.0060.00515.14
7.2.150.0070.00716.76
7.2.140.0050.00916.84
7.2.130.0060.00516.90
7.2.120.0050.00616.95
7.2.110.0060.00816.90
7.2.100.0040.01316.91
7.2.90.0100.00717.04
7.2.80.0050.01116.73
7.2.70.0070.00716.88
7.2.60.0020.01316.83
7.2.50.0050.00916.97
7.2.40.0080.00416.82
7.2.30.0050.00816.87
7.2.20.0030.01116.89
7.2.10.0080.00816.92
7.2.00.0090.00617.75
7.1.330.0090.00615.79
7.1.320.0020.01015.56
7.1.310.0070.00615.79
7.1.300.0040.00815.74
7.1.290.0070.00715.67
7.1.280.0050.00715.53
7.1.270.0050.00615.69
7.1.260.0040.00915.68
7.1.250.0050.00815.62
7.1.240.0030.01015.57
7.1.230.0120.00315.57
7.1.220.0060.01015.48
7.1.210.0100.00015.74
7.1.200.0030.01015.64
7.1.190.0080.00315.78
7.1.180.0040.01115.55
7.1.170.0030.01715.65
7.1.160.0030.00815.79
7.1.150.0040.00815.82
7.1.140.0030.01115.70
7.1.130.0080.00515.75
7.1.120.0030.01015.62
7.1.110.0030.01315.59
7.1.100.0050.00616.71
7.1.90.0040.01215.79
7.1.80.0040.00415.81
7.1.70.0080.00616.37
7.1.60.0070.01217.63
7.1.50.0060.01316.20
7.1.40.0060.00815.62
7.1.30.0000.00915.52
7.1.20.0110.00315.81
7.1.10.0060.00915.66
7.1.00.0050.04119.03
7.0.330.0060.00615.31
7.0.320.0060.00615.20
7.0.310.0110.00415.06
7.0.300.0070.01415.31
7.0.290.0110.00415.19
7.0.280.0070.00315.42
7.0.270.0050.00315.38
7.0.260.0070.00715.46
7.0.250.0040.01215.57
7.0.240.0060.00915.50
7.0.230.0040.01115.52
7.0.220.0000.01415.49
7.0.210.0030.00915.18
7.0.200.0030.00816.10
7.0.190.0000.01215.59
7.0.180.0030.00915.44
7.0.170.0070.00715.54
7.0.160.0090.00615.53
7.0.150.0000.01515.26
7.0.140.0110.03318.71
7.0.130.0030.01015.13
7.0.120.0030.00915.49
7.0.110.0000.01515.45
7.0.100.0070.00715.45
7.0.90.0070.02817.62
7.0.80.0140.03817.79
7.0.70.0050.04417.63
7.0.60.0050.03017.72
7.0.50.0080.03917.92
7.0.40.0060.04316.72
7.0.30.0130.03816.67
7.0.20.0050.04816.69
7.0.10.0060.04816.72
7.0.00.0110.02816.78
5.6.400.0070.00713.99
5.6.390.0030.00614.60
5.6.380.0090.00414.41
5.6.370.0030.00614.01
5.6.360.0040.00414.18
5.6.350.0100.00314.46
5.6.340.0060.00914.38
5.6.330.0060.00614.27
5.6.320.0070.01014.35
5.6.310.0000.00914.54
5.6.300.0040.01514.56
5.6.290.0180.00014.07
5.6.280.0020.04217.62
5.6.270.0070.00714.59
5.6.260.0000.01414.30
5.6.250.0030.01014.37
5.6.240.0100.03817.53
5.6.230.0070.02717.56
5.6.220.0040.04317.55
5.6.210.0030.04717.36
5.6.200.0020.03417.79
5.6.190.0060.04917.71
5.6.180.0050.04717.82
5.6.170.0050.05017.68
5.6.160.0060.03017.58
5.6.150.0050.04217.87
5.6.140.0100.04417.69
5.6.130.0050.04917.57
5.6.120.0020.02917.74
5.6.110.0080.02717.67
5.6.100.0090.04117.67
5.6.90.0050.02717.76
5.6.80.0070.03717.32
5.6.70.0050.02317.18
5.6.60.0030.02717.32
5.6.50.0040.02417.44
5.6.40.0070.02117.23
5.6.30.0040.02317.22
5.6.20.0070.04117.33
5.6.10.0030.02117.40
5.6.00.0040.02117.44
5.5.380.0070.03517.35
5.5.370.0070.04017.35
5.5.360.0170.03517.41
5.5.350.0060.04317.28
5.5.340.0050.04517.48
5.5.330.0100.02517.63
5.5.320.0060.03617.57
5.5.310.0040.04117.59
5.5.300.0070.02617.53
5.5.290.0110.03317.61
5.5.280.0040.02717.59
5.5.270.0100.03017.45
5.5.260.0070.03717.62
5.5.250.0040.03117.42
5.5.240.0020.02817.28
5.5.230.0040.02917.28
5.5.220.0020.03017.05
5.5.210.0000.02717.10
5.5.200.0030.02817.21
5.5.190.0020.02617.27
5.5.180.0050.02716.99
5.5.170.0060.00614.54
5.5.160.0050.02817.24
5.5.150.0040.03217.07
5.5.140.0030.02617.14
5.5.130.0040.02917.21
5.5.120.0100.01617.17
5.5.110.0040.02217.26
5.5.100.0050.02117.08
5.5.90.0090.03717.14
5.5.80.0050.03817.27
5.5.70.0040.02617.05
5.5.60.0070.02616.99
5.5.50.0030.03117.08
5.5.40.0030.02117.13
5.5.30.0070.03017.04
5.5.20.0060.01917.20
5.5.10.0040.02417.20
5.5.00.0070.02017.21
5.4.450.0080.04015.32
5.4.440.0110.02915.14
5.4.430.0070.04015.40
5.4.420.0120.04015.41
5.4.410.0050.02615.29
5.4.400.0020.03315.09
5.4.390.0070.02015.12
5.4.380.0040.03115.13
5.4.370.0070.02214.98
5.4.360.0030.02015.09
5.4.350.0020.02315.08
5.4.340.0070.01715.06
5.4.330.0030.00911.09
5.4.320.0040.04615.13
5.4.310.0090.03715.06
5.4.300.0050.01815.12
5.4.290.0020.03615.12
5.4.280.0020.03814.98
5.4.270.0050.02215.16
5.4.260.0030.02215.03
5.4.250.0050.03515.14
5.4.240.0020.02414.99
5.4.230.0050.02215.14
5.4.220.0070.03015.10
5.4.210.0050.02015.11
5.4.200.0050.01915.05
5.4.190.0020.03215.08
5.4.180.0040.02915.06
5.4.170.0050.02114.97
5.4.160.0020.02515.10
5.4.150.0050.03015.05
5.4.140.0020.02713.76
5.4.130.0060.02013.71
5.4.120.0060.02513.68
5.4.110.0030.02013.81
5.4.100.0050.02013.79
5.4.90.0030.02213.77
5.4.80.0030.02313.80
5.4.70.0060.02013.76
5.4.60.0030.02213.73
5.4.50.0050.02013.78
5.4.40.0030.02213.79
5.4.30.0050.02213.69
5.4.20.0030.03613.77
5.4.10.0020.02213.74
5.4.00.0030.02913.45
5.3.290.0070.02012.91
5.3.280.0080.03812.90
5.3.270.0050.02512.89
5.3.260.0030.02312.89
5.3.250.0050.01612.89
5.3.240.0070.03212.85
5.3.230.0030.02012.86
5.3.220.0020.02612.83
5.3.210.0020.02412.81
5.3.200.0030.02212.79
5.3.190.0030.02312.85
5.3.180.0060.02012.88
5.3.170.0010.02512.81
5.3.160.0030.02212.80
5.3.150.0050.02612.87
5.3.140.0050.02312.80
5.3.130.0060.02312.89
5.3.120.0020.02112.81
5.3.110.0070.02512.81
5.3.100.0060.04112.63
5.3.90.0030.02512.54
5.3.80.0000.04112.56
5.3.70.0050.02112.51
5.3.60.0030.02412.57
5.3.50.0070.03312.53
5.3.40.0050.03212.49
5.3.30.0000.04712.51
5.3.20.0000.02912.36
5.3.10.0030.03712.43
5.3.00.0070.03512.38
5.2.170.0000.03011.31
5.2.160.0000.06711.11
5.2.150.0030.05011.24
5.2.140.0070.04011.27
5.2.130.0070.03311.19
5.2.120.0000.06311.25
5.2.110.0070.04311.19
5.2.100.0130.05011.04
5.2.90.0100.05311.02
5.2.80.0000.06711.13
5.2.70.0100.05011.04
5.2.60.0030.06311.14
5.2.50.0100.04010.94
5.2.40.0100.06011.14
5.2.30.0070.03311.11
5.2.20.0000.03710.99
5.2.10.0100.05710.89
5.2.00.0030.06310.87
5.1.60.0030.04310.12
5.1.50.0030.0509.92
5.1.40.0030.04310.01
5.1.30.0070.05310.51
5.1.20.0100.04310.45
5.1.10.0100.03710.20
5.1.00.0130.0509.96
5.0.50.0100.0308.59
5.0.40.0030.0438.52
5.0.30.0030.0638.38
5.0.20.0000.0308.36
5.0.10.0030.0478.07
5.0.00.0070.0438.21
4.4.90.0030.0377.30
4.4.80.0030.0377.30
4.4.70.0030.0177.30
4.4.60.0030.0137.30
4.4.50.0000.0407.30
4.4.40.0030.0377.30
4.4.30.0070.0337.30
4.4.20.0030.0337.30
4.4.10.0030.0377.30
4.4.00.0070.0537.30
4.3.110.0000.0307.30
4.3.100.0000.0337.30
4.3.90.0070.0177.30
4.3.80.0030.0377.30
4.3.70.0000.0207.30
4.3.60.0000.0377.30
4.3.50.0030.0207.30
4.3.40.0000.0477.30
4.3.30.0070.0307.30
4.3.20.0070.0337.30
4.3.10.0000.0377.30
4.3.00.0030.0307.30

preferences:
44.06 ms | 401 KiB | 5 Q