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) { $k = _js_enc_value((string)$k); $data[] = $k . ':' . $v; } else { $data[] = $v; } } if ($assoc) { $bl = '{'; $br = '}'; } else { $bl = '['; $br = ']'; } return $bl . implode(',', $data) . $br; } function _js_enc_value($value) { var_dump($value); switch (true) { case is_array($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) { $pattern = "@[\x08-\x10\x0c\x0d\\\\\"/]|([^\x08-\x10\x0c\x0d\x32-\x7f\\\\\"/])++@u"; return preg_replace_callback($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\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));

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)
8.3.60.0140.00318.30
8.3.50.0130.00521.92
8.3.40.0040.01118.97
8.3.30.0090.00619.07
8.3.20.0040.00420.21
8.3.10.0050.00321.92
8.3.00.0030.00522.43
8.2.180.0130.00318.29
8.2.170.0120.00322.96
8.2.160.0070.00720.89
8.2.150.0000.00924.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0080.00017.75
8.2.110.0060.00322.04
8.2.100.0000.01117.97
8.2.90.0040.00419.17
8.2.80.0000.00818.18
8.2.70.0030.00717.63
8.2.60.0030.00617.80
8.2.50.0030.00518.07
8.2.40.0040.00418.26
8.2.30.0000.00818.23
8.2.20.0000.00817.70
8.2.10.0050.00319.57
8.2.00.0040.00417.82
8.1.280.0110.00425.92
8.1.270.0060.00323.96
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0090.00023.92
8.1.230.0130.00019.10
8.1.220.0030.00617.76
8.1.210.0050.00318.77
8.1.200.0050.00517.35
8.1.190.0000.00917.54
8.1.180.0030.00618.10
8.1.170.0080.00318.50
8.1.160.0000.00822.02
8.1.150.0040.00418.57
8.1.140.0040.00417.50
8.1.130.0000.00717.88
8.1.120.0070.00017.53
8.1.110.0040.00417.56
8.1.100.0050.00317.52
8.1.90.0040.00417.40
8.1.80.0020.00517.54
8.1.70.0070.00017.48
8.1.60.0030.00617.67
8.1.50.0040.00417.50
8.1.40.0030.00517.57
8.1.30.0050.00317.55
8.1.20.0060.00317.68
8.1.10.0030.00617.61
8.1.00.0000.00817.57
8.0.300.0000.00818.77
8.0.290.0000.00717.29
8.0.280.0000.00718.50
8.0.270.0000.00717.31
8.0.260.0050.00316.90
8.0.250.0030.00317.09
8.0.240.0000.00717.10
8.0.230.0050.00317.10
8.0.220.0030.00316.96
8.0.210.0000.00716.91
8.0.200.0030.00317.07
8.0.190.0050.00317.02
8.0.180.0000.00817.02
8.0.170.0080.00017.07
8.0.160.0020.00517.08
8.0.150.0070.00017.05
8.0.140.0000.00816.86
8.0.130.0050.00013.40
8.0.120.0040.00417.00
8.0.110.0000.00716.99
8.0.100.0040.00416.81
8.0.90.0040.00416.97
8.0.80.0030.01216.99
8.0.70.0050.00316.92
8.0.60.0030.00517.08
8.0.50.0000.00717.01
8.0.30.0130.00717.07
8.0.20.0090.01217.40
8.0.10.0000.00817.02
8.0.00.0120.01216.84
7.4.330.0030.00315.09
7.4.320.0000.00616.65
7.4.300.0000.00716.64
7.4.290.0000.00716.50
7.4.280.0030.00316.67
7.4.270.0000.01016.53
7.4.260.0040.00416.64
7.4.250.0090.00016.61
7.4.240.0020.00516.67
7.4.230.0030.00316.77
7.4.220.0090.00916.53
7.4.210.0070.00816.67
7.4.200.0040.00416.57
7.4.190.0000.00716.58
7.4.160.0030.01416.40
7.4.150.0140.00317.40
7.4.140.0070.01017.86
7.4.130.0100.00716.62
7.4.120.0120.00916.57
7.4.110.0090.00916.56
7.4.100.0110.00716.64
7.4.90.0110.00816.61
7.4.80.0090.00816.64
7.4.70.0130.00316.68
7.4.60.0090.00616.64
7.4.50.0070.00016.59
7.4.40.0120.00322.77
7.4.30.0080.00816.55
7.4.00.0120.00715.23
7.3.330.0060.00013.35
7.3.320.0000.00613.16
7.3.310.0000.00816.26
7.3.300.0000.00716.37
7.3.290.0090.00916.30
7.3.280.0110.00616.34
7.3.270.0110.00617.40
7.3.260.0110.00716.40
7.3.250.0100.00916.63
7.3.240.0070.01016.55
7.3.230.0060.01116.39
7.3.210.0160.00616.43
7.3.200.0110.00619.39
7.3.190.0190.00316.54
7.3.180.0070.01416.44
7.3.170.0090.00616.34
7.3.160.0170.00016.54
7.3.120.0060.00814.69
7.3.110.0060.01214.73
7.3.100.0000.01715.02
7.3.90.0060.00314.73
7.3.80.0060.00614.74
7.3.70.0030.01014.60
7.3.60.0070.01014.93
7.3.50.0030.01414.90
7.3.40.0030.01014.75
7.3.30.0040.00814.53
7.3.20.0070.00316.50
7.3.10.0080.00616.59
7.3.00.0030.01016.40
7.2.330.0090.00916.39
7.2.320.0000.01716.65
7.2.310.0060.01216.47
7.2.300.0170.00016.69
7.2.290.0110.00616.53
7.2.250.0120.00915.00
7.2.240.0030.01414.81
7.2.230.0090.00615.13
7.2.220.0060.00615.19
7.2.210.0000.01015.11
7.2.200.0090.00615.06
7.2.190.0040.00815.02
7.2.180.0040.01115.10
7.2.170.0050.00514.93
7.2.00.0040.00719.36
7.1.330.0030.01315.70
7.1.320.0000.01715.61
7.1.310.0060.00315.67
7.1.300.0000.01115.73
7.1.290.0000.01215.80
7.1.280.0090.00015.73
7.1.270.0060.01015.51
7.1.260.0030.00915.68
7.1.100.0000.01018.02
7.1.70.0040.00717.22
7.1.60.0060.01019.82
7.1.50.0000.02016.57
7.1.00.0030.07722.33
7.0.200.0070.00716.86
7.0.140.0070.07322.06
7.0.90.0570.09019.93
7.0.80.0500.07319.97
7.0.70.0530.07319.92
7.0.60.0530.05719.95
7.0.50.0400.04320.39
7.0.40.0100.07720.04
7.0.30.0070.07719.96
7.0.20.0070.05720.08
7.0.10.0070.08319.99
7.0.00.0100.08020.07
5.6.280.0100.06720.84
5.6.240.0100.04720.53
5.6.230.0130.05320.52
5.6.220.0130.07720.67
5.6.210.0030.06020.66
5.6.200.0030.04721.06
5.6.190.0030.05721.05
5.6.180.0230.03721.04
5.6.170.0070.08021.08
5.6.160.0130.07321.02
5.6.150.0100.05321.03
5.6.140.0100.08321.07
5.6.130.0070.05021.14
5.6.120.0130.07721.13
5.6.110.0100.07020.95
5.6.100.0100.04020.95
5.6.90.0100.08020.95
5.6.80.0070.04720.42
5.6.70.0100.07720.41
5.6.60.0130.05720.50
5.6.50.0070.07720.34
5.6.40.0030.07320.37
5.6.30.0100.07020.39
5.6.20.0030.08720.39
5.6.10.0070.05020.45
5.6.00.0000.06020.27
5.5.380.0100.08020.51
5.5.370.0070.08720.43
5.5.360.0100.07020.45
5.5.350.0070.07320.38
5.5.340.0070.08020.85
5.5.330.0070.08020.66
5.5.320.0070.08320.84
5.5.310.0070.08020.87
5.5.300.0030.05720.88
5.5.290.0100.08320.88
5.5.280.0000.08720.92
5.5.270.0100.05020.84
5.5.260.0170.07720.74
5.5.250.0100.06720.47
5.5.240.0070.07720.32
5.5.230.0070.04720.32
5.5.220.0130.07320.15
5.5.210.0030.07720.13
5.5.200.0170.07020.17
5.5.190.0070.04720.18
5.5.180.0030.04320.14
5.5.160.0000.08319.97
5.5.150.0100.06720.14
5.5.140.0000.05720.13
5.5.130.0070.05720.20
5.5.120.0000.07320.16
5.5.110.0130.07020.16
5.5.100.0070.04320.15
5.5.90.0100.04720.08
5.5.80.0130.06320.17
5.5.70.0070.05720.16
5.5.60.0030.05320.15
5.5.50.0030.07720.07
5.5.40.0070.07720.07
5.5.30.0100.04020.07
5.5.20.0100.07020.13
5.5.10.0100.07320.07
5.5.00.0000.05320.07
5.4.450.0070.07019.46
5.4.440.0230.06019.54
5.4.430.0100.05319.50
5.4.420.0100.07719.17
5.4.410.0030.08019.33
5.4.400.0030.08019.10
5.4.390.0000.08019.07
5.4.380.0100.04018.85
5.4.370.0100.07719.18
5.4.360.0030.04719.05
5.4.350.0030.07318.95
5.4.340.0100.04719.18
5.4.320.0100.07019.03
5.4.310.0070.08019.21
5.4.300.0030.04719.23
5.4.290.0130.06319.04
5.4.280.0070.08018.84
5.4.270.0100.05719.12
5.4.260.0130.06018.84
5.4.250.0130.04019.20
5.4.240.0100.07319.18
5.4.230.0070.04719.20
5.4.220.0000.07319.13
5.4.210.0100.06718.94
5.4.200.0130.06319.13
5.4.190.0100.07319.02
5.4.180.0030.08019.02
5.4.170.0100.04318.87
5.4.160.0000.07718.87
5.4.150.0030.08318.88
5.4.140.0070.07716.45
5.4.130.0070.06316.42
5.4.120.0100.06016.49
5.4.110.0070.06716.39
5.4.100.0070.05716.42
5.4.90.0070.04316.52
5.4.80.0170.06016.50
5.4.70.0000.04316.31
5.4.60.0000.04716.37
5.4.50.0130.06316.44
5.4.40.0030.07016.50
5.4.30.0070.06716.35
5.4.20.0070.06316.40
5.4.10.0000.07016.40
5.4.00.0100.06715.80
5.3.290.0030.06014.80
5.3.280.0030.08014.60
5.3.270.0100.07314.53
5.3.260.0100.04314.59
5.3.250.0030.08314.70
5.3.240.0100.08014.66
5.3.230.0030.08014.68
5.3.220.0070.05714.57
5.3.210.0100.07014.70
5.3.200.0070.07314.61
5.3.190.0070.03714.66
5.3.180.0100.07314.71
5.3.170.0000.04314.52
5.3.160.0070.07714.64
5.3.150.0030.08014.65
5.3.140.0070.06714.64
5.3.130.0100.07314.65
5.3.120.0030.07714.60
5.3.110.0030.08314.56
5.3.100.0070.07014.16
5.3.90.0000.04314.16
5.3.80.0130.07014.14
5.3.70.0100.06714.20
5.3.60.0130.03714.09
5.3.50.0070.06314.04
5.3.40.0070.08014.01
5.3.30.0030.05313.92
5.3.20.0070.06713.74
5.3.10.0130.04313.69
5.3.00.0000.08013.69
5.2.170.0070.06011.29
5.2.160.0070.03011.11
5.2.150.0100.05711.24
5.2.140.0070.05011.20
5.2.130.0070.06311.19
5.2.120.0030.05711.18
5.2.110.0070.06011.12
5.2.100.0100.05711.22
5.2.90.0000.06711.27
5.2.80.0070.06311.05
5.2.70.0030.06311.25
5.2.60.0100.05011.08
5.2.50.0000.04311.16
5.2.40.0030.05011.14
5.2.30.0000.07010.86
5.2.20.0030.05710.99
5.2.10.0030.05310.90
5.2.00.0070.06010.80
5.1.60.0030.05710.03
5.1.50.0000.05010.12
5.1.40.0030.04010.13
5.1.30.0000.03310.49
5.1.20.0070.05310.32
5.1.10.0070.03710.10
5.1.00.0000.05010.19
5.0.50.0000.0438.70
5.0.40.0000.0308.61
5.0.30.0030.0638.34
5.0.20.0070.0408.32
5.0.10.0000.0378.31
5.0.00.0100.0478.33
4.4.90.0030.0237.49
4.4.80.0070.0337.49
4.4.70.0000.0377.49
4.4.60.0070.0207.49
4.4.50.0000.0237.49
4.4.40.0070.0507.49
4.4.30.0030.0277.49
4.4.20.0030.0207.49
4.4.10.0070.0307.49
4.4.00.0070.0377.49
4.3.110.0030.0377.49
4.3.100.0000.0377.49
4.3.90.0000.0407.49
4.3.80.0000.0577.49
4.3.70.0000.0277.49
4.3.60.0000.0337.49
4.3.50.0000.0377.49
4.3.40.0000.0437.49
4.3.30.0030.0337.49
4.3.20.0000.0277.49
4.3.10.0000.0307.49
4.3.00.0030.0237.49

preferences:
41.68 ms | 401 KiB | 5 Q