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(array('1'=>'hoge')));

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)
8.3.60.0160.00618.31
8.3.50.0110.00821.27
8.3.40.0100.01018.63
8.3.30.0030.01320.34
8.3.20.0050.00320.28
8.3.10.0040.00421.10
8.3.00.0080.00023.34
8.2.180.0150.00016.50
8.2.170.0120.00322.96
8.2.160.0030.01020.39
8.2.150.0040.00424.18
8.2.140.0030.00524.66
8.2.130.0040.00426.16
8.2.120.0080.00021.12
8.2.110.0030.00619.26
8.2.100.0050.00517.72
8.2.90.0090.00319.01
8.2.80.0030.00817.97
8.2.70.0100.00317.24
8.2.60.0050.00317.88
8.2.50.0040.00418.07
8.2.40.0080.00017.97
8.2.30.0030.00519.48
8.2.20.0080.00017.61
8.2.10.0050.00317.62
8.2.00.0000.00817.70
8.1.280.0070.00725.92
8.1.270.0080.00023.99
8.1.260.0050.00226.35
8.1.250.0070.00028.09
8.1.240.0100.00022.52
8.1.230.0090.00321.14
8.1.220.0030.00518.77
8.1.210.0030.00518.97
8.1.200.0070.00317.47
8.1.190.0040.00417.54
8.1.180.0000.00818.10
8.1.170.0040.00418.67
8.1.160.0070.00018.80
8.1.150.0070.00018.57
8.1.140.0000.00817.49
8.1.130.0070.00017.77
8.1.120.0040.00417.42
8.1.110.0080.00017.49
8.1.100.0000.00717.46
8.1.90.0020.00517.39
8.1.80.0040.00417.38
8.1.70.0000.00717.29
8.1.60.0030.00717.57
8.1.50.0000.00717.43
8.1.40.0000.00817.41
8.1.30.0000.00817.54
8.1.20.0000.00817.54
8.1.10.0050.00217.36
8.1.00.0060.00317.40
8.0.300.0080.00019.98
8.0.290.0040.00417.28
8.0.280.0070.00018.49
8.0.270.0000.00717.24
8.0.260.0030.00316.83
8.0.250.0050.00317.01
8.0.240.0040.00416.86
8.0.230.0000.00816.93
8.0.220.0000.00716.87
8.0.210.0030.00316.77
8.0.200.0040.00316.82
8.0.190.0030.00516.89
8.0.180.0080.00016.80
8.0.170.0030.00616.93
8.0.160.0040.00416.84
8.0.150.0030.00516.89
8.0.140.0030.00716.82
8.0.130.0000.00613.36
8.0.120.0040.00416.86
8.0.110.0040.00416.75
8.0.100.0080.00016.88
8.0.90.0050.00216.92
8.0.80.0090.00616.95
8.0.70.0070.00016.85
8.0.60.0070.00016.79
8.0.50.0040.00416.95
8.0.30.0100.01317.02
8.0.20.0110.00917.40
8.0.10.0000.00816.91
8.0.00.0100.00816.62
7.4.330.0000.00514.93
7.4.320.0000.00716.61
7.4.300.0040.00416.58
7.4.290.0070.00016.54
7.4.280.0030.00316.57
7.4.270.0000.00716.57
7.4.260.0060.00013.40
7.4.250.0050.00216.50
7.4.240.0070.00016.45
7.4.230.0000.00716.40
7.4.220.0180.00716.55
7.4.210.0090.00916.51
7.4.200.0000.00716.43
7.4.190.0030.00516.63
7.4.160.0090.00616.58
7.4.150.0120.00617.40
7.4.140.0050.01417.86
7.4.130.0140.00616.43
7.4.120.0120.01016.59
7.4.110.0100.00716.56
7.4.100.0160.00916.41
7.4.90.0080.01416.50
7.4.80.0040.01419.39
7.4.70.0150.00916.66
7.4.60.0110.00816.43
7.4.50.0050.00016.05
7.4.40.0040.01222.77
7.4.30.0130.00616.47
7.4.00.0030.01214.71
7.3.330.0020.00213.07
7.3.320.0030.00313.16
7.3.310.0030.00516.33
7.3.300.0030.00316.24
7.3.290.0110.00416.15
7.3.280.0070.01016.17
7.3.270.0090.00917.40
7.3.260.0090.01118.24
7.3.250.0130.00416.24
7.3.240.0080.00816.56
7.3.230.0000.01716.48
7.3.210.0090.00916.45
7.3.200.0140.00719.39
7.3.190.0090.00916.32
7.3.180.0070.01016.43
7.3.170.0180.00316.27
7.3.160.0080.00816.28
7.3.120.0130.00314.87
7.2.330.0120.00916.43
7.2.320.0100.01416.58
7.2.310.0100.01116.56
7.2.300.0070.01116.64
7.2.290.0070.01116.32
7.1.70.0080.00016.73
7.1.60.0100.01319.17
7.1.50.0090.00616.81
7.1.00.0000.06722.51
7.0.200.0000.00716.77
7.0.140.0000.07721.92
7.0.90.0500.08719.92
7.0.80.0600.08319.90
7.0.70.0530.04019.86
7.0.60.0500.08319.76
7.0.50.0470.06320.35
7.0.40.0030.05020.09
7.0.30.0030.06320.08
7.0.20.0030.08720.18
7.0.10.0030.04720.11
7.0.00.0030.05019.99
5.6.240.0100.07720.51
5.6.230.0130.07720.60
5.6.220.0000.05320.55
5.6.210.0170.06320.53
5.6.200.0070.05721.15
5.6.190.0100.08321.09
5.6.180.0030.04321.04
5.6.170.0070.04321.06
5.6.160.0100.07021.04
5.6.150.0030.08721.15
5.6.140.0100.08021.06
5.6.130.0100.04721.03
5.6.120.0030.07721.02
5.6.110.0130.06321.06
5.6.100.0030.08321.10
5.6.90.0100.08020.93
5.6.80.0130.06320.32
5.6.70.0130.07320.42
5.6.60.0030.06020.42
5.6.50.0030.08320.57
5.6.40.0100.08020.42
5.6.30.0130.07020.39
5.6.20.0130.04020.38
5.6.10.0170.07020.43
5.6.00.0070.08020.41
5.5.380.0070.04020.41
5.5.370.0030.05320.36
5.5.360.0070.05320.31
5.5.350.0130.07720.38
5.5.340.0130.07320.85
5.5.330.0030.05720.82
5.5.320.0100.07020.94
5.5.310.0130.04020.88
5.5.300.0030.06720.89
5.5.290.0070.04320.81
5.5.280.0100.04320.66
5.5.270.0000.05320.80
5.5.260.0000.08320.80
5.5.250.0030.05020.63
5.5.240.0070.05320.29
5.5.230.0000.04720.29
5.5.220.0100.03720.12
5.5.210.0100.06320.31
5.5.200.0100.07720.02
5.5.190.0000.08720.25
5.5.180.0100.07020.25
5.5.160.0100.03720.25
5.5.150.0130.07720.16
5.5.140.0100.07020.28
5.5.130.0070.06320.25
5.5.120.0030.04020.23
5.5.110.0030.05020.24
5.5.100.0130.07320.13
5.5.90.0030.07020.14
5.5.80.0130.04020.09
5.5.70.0070.05719.95
5.5.60.0030.08020.07
5.5.50.0030.06719.98
5.5.40.0030.08320.13
5.5.30.0000.05320.15
5.5.20.0070.07020.15
5.5.10.0000.04319.99
5.5.00.0070.07320.05
5.4.450.0100.07719.47
5.4.440.0000.09019.14
5.4.430.0070.07319.20
5.4.420.0100.04319.37
5.4.410.0070.05319.43
5.4.400.0070.05319.04
5.4.390.0030.06718.95
5.4.380.0100.06719.04
5.4.370.0000.04019.12
5.4.360.0100.06719.18
5.4.350.0130.06719.14
5.4.340.0070.07718.84
5.4.320.0070.07318.91
5.4.310.0000.08018.91
5.4.300.0000.05019.10
5.4.290.0070.04719.04
5.4.280.0070.04019.04
5.4.270.0070.06319.15
5.4.260.0070.07019.10
5.4.250.0100.06719.20
5.4.240.0030.06319.04
5.4.230.0070.07019.11
5.4.220.0000.08318.90
5.4.210.0030.08019.23
5.4.200.0100.05019.24
5.4.190.0070.07019.08
5.4.180.0070.04319.04
5.4.170.0070.04019.22
5.4.160.0170.03319.11
5.4.150.0030.04719.22
5.4.140.0070.03716.52
5.4.130.0170.03016.50
5.4.120.0030.07716.34
5.4.110.0000.08016.46
5.4.100.0100.04716.44
5.4.90.0070.03716.56
5.4.80.0070.04016.46
5.4.70.0100.06716.39
5.4.60.0030.06716.25
5.4.50.0030.06716.43
5.4.40.0070.07316.57
5.4.30.0070.05016.48
5.4.20.0030.05716.37
5.4.10.0030.07716.25
5.4.00.0000.04715.61
5.3.290.0070.08314.66
5.3.280.0100.07014.68
5.3.270.0130.07314.70
5.3.260.0030.06014.56
5.3.250.0030.07014.77
5.3.240.0000.07014.69
5.3.230.0000.08714.65
5.3.220.0130.06314.65
5.3.210.0130.07314.59
5.3.200.0130.07014.70
5.3.190.0130.06714.65
5.3.180.0030.06314.64
5.3.170.0100.03714.65
5.3.160.0070.05014.57
5.3.150.0100.07014.59
5.3.140.0070.07314.54
5.3.130.0070.07014.50
5.3.120.0100.07014.55
5.3.110.0030.05014.49
5.3.100.0070.03714.09
5.3.90.0130.06314.11
5.3.80.0030.05013.97
5.3.70.0130.06313.94
5.3.60.0100.05714.12
5.3.50.0030.07713.99
5.3.40.0030.04713.92
5.3.30.0000.06313.98
5.3.20.0100.06013.62
5.3.10.0070.07313.82
5.3.00.0100.06713.68
5.2.170.0070.06311.23
5.2.160.0000.05311.28
5.2.150.0030.06311.20
5.2.140.0070.04711.26
5.2.130.0030.06011.13
5.2.120.0100.04711.13
5.2.110.0000.04011.26
5.2.100.0030.06011.12
5.2.90.0070.03711.19
5.2.80.0070.05711.23
5.2.70.0070.05011.24
5.2.60.0030.05711.14
5.2.50.0100.05011.07
5.2.40.0070.06310.96
5.2.30.0030.05711.01
5.2.20.0070.06010.98
5.2.10.0070.05711.00
5.2.00.0000.05310.76
5.1.60.0070.05010.02
5.1.50.0030.03710.10
5.1.40.0070.0509.84
5.1.30.0100.05010.43
5.1.20.0000.06310.33
5.1.10.0030.04710.11
5.1.00.0070.0339.99
5.0.50.0030.0478.65
5.0.40.0130.0408.54
5.0.30.0030.0508.35
5.0.20.0000.0478.34
5.0.10.0000.0478.30
5.0.00.0030.0638.30
4.4.90.0000.0236.64
4.4.80.0100.0306.64
4.4.70.0000.0276.64
4.4.60.0030.0306.64
4.4.50.0000.0376.64
4.4.40.0070.0476.64
4.4.30.0000.0406.64
4.4.20.0070.0306.64
4.4.10.0070.0336.64
4.4.00.0000.0506.64
4.3.110.0030.0336.64
4.3.100.0000.0276.64
4.3.90.0000.0376.64
4.3.80.0030.0536.64
4.3.70.0030.0336.64
4.3.60.0000.0376.64
4.3.50.0030.0336.64
4.3.40.0030.0436.64
4.3.30.0000.0276.64
4.3.20.0000.0306.64
4.3.10.0000.0376.64
4.3.00.0030.0376.64

preferences:
34.39 ms | 400 KiB | 5 Q