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(_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)
8.3.60.0120.00316.75
8.3.50.0130.00921.97
8.3.40.0100.00718.71
8.3.30.0140.00318.81
8.3.20.0040.00420.38
8.3.10.0080.00023.61
8.3.00.0080.00019.13
8.2.180.0070.01117.00
8.2.170.0080.00822.96
8.2.160.0000.01320.28
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0050.00226.16
8.2.120.0080.00019.36
8.2.110.0050.00520.29
8.2.100.0040.00817.91
8.2.90.0050.00319.17
8.2.80.0000.00817.97
8.2.70.0060.00317.63
8.2.60.0080.00017.91
8.2.50.0050.00318.10
8.2.40.0070.00318.16
8.2.30.0060.00318.17
8.2.20.0020.00517.80
8.2.10.0000.01018.12
8.2.00.0040.00417.68
8.1.280.0110.00425.92
8.1.270.0050.00322.21
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0030.00623.82
8.1.230.0110.00517.89
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00617.25
8.1.190.0000.00917.35
8.1.180.0080.00018.10
8.1.170.0050.00318.83
8.1.160.0000.00721.99
8.1.150.0030.00518.54
8.1.140.0060.00317.51
8.1.130.0070.00017.81
8.1.120.0000.00817.48
8.1.110.0000.00717.38
8.1.100.0000.00717.44
8.1.90.0000.00717.39
8.1.80.0030.00317.50
8.1.70.0000.00617.33
8.1.60.0030.00617.55
8.1.50.0060.00317.40
8.1.40.0040.00417.40
8.1.30.0040.00417.59
8.1.20.0050.00317.63
8.1.10.0040.00417.45
8.1.00.0040.00417.44
8.0.300.0070.00418.77
8.0.290.0080.00416.75
8.0.280.0030.00318.47
8.0.270.0070.00017.27
8.0.260.0000.00716.90
8.0.250.0030.00317.09
8.0.240.0050.00317.09
8.0.230.0020.00516.96
8.0.220.0030.00317.09
8.0.210.0060.00316.93
8.0.200.0000.00817.05
8.0.190.0090.00317.12
8.0.180.0070.00017.03
8.0.170.0000.00716.95
8.0.160.0000.00717.09
8.0.150.0000.00917.07
8.0.140.0030.00617.02
8.0.130.0000.00513.54
8.0.120.0040.00416.86
8.0.110.0000.00717.00
8.0.100.0000.00816.88
8.0.90.0000.00816.89
8.0.80.0040.01116.91
8.0.70.0020.00516.86
8.0.60.0080.00016.94
8.0.50.0050.00317.00
8.0.30.0040.01517.07
8.0.20.0110.00817.40
8.0.10.0040.00417.13
8.0.00.0110.00716.77
7.4.330.0000.00515.09
7.4.320.0030.00316.61
7.4.300.0030.00316.64
7.4.290.0000.00816.52
7.4.280.0000.01016.51
7.4.270.0030.00316.52
7.4.260.0000.00716.63
7.4.250.0000.00716.61
7.4.240.0050.00316.57
7.4.230.0000.00716.67
7.4.220.0100.00716.59
7.4.210.0090.00816.54
7.4.200.0030.00316.70
7.4.190.0030.00316.45
7.4.160.0100.00716.40
7.4.150.0080.00817.40
7.4.140.0100.01417.86
7.4.130.0110.00616.54
7.4.120.0070.01316.48
7.4.110.0070.01116.62
7.4.100.0090.00916.59
7.4.90.0080.01216.58
7.4.80.0070.01119.39
7.4.70.0080.00816.49
7.4.60.0140.00416.66
7.4.50.0040.00416.39
7.4.40.0070.00722.77
7.4.30.0090.00616.48
7.4.00.0080.00414.95
7.3.330.0050.00013.22
7.3.320.0050.00013.39
7.3.310.0000.00816.46
7.3.300.0000.00716.37
7.3.290.0040.01116.29
7.3.280.0120.00716.38
7.3.270.0130.00617.40
7.3.260.0070.01116.58
7.3.250.0110.00916.45
7.3.240.0130.01316.38
7.3.230.0120.00416.56
7.3.210.0090.00916.32
7.3.200.0110.00619.39
7.3.190.0150.00616.41
7.3.180.0150.00016.41
7.3.170.0080.00816.37
7.3.160.0090.01316.43
7.3.120.0000.01514.86
7.2.330.0110.00616.53
7.2.320.0110.01116.28
7.2.310.0070.01616.39
7.2.300.0030.01416.28
7.2.290.0100.00716.61
7.2.60.0080.00016.82
7.2.50.0000.01216.71
7.2.00.0040.01119.33
7.1.200.0050.00515.68
7.1.70.0000.00916.97
7.1.60.0140.01119.33
7.1.50.0090.00916.65
7.1.00.0070.07022.48
7.0.200.0100.00316.82
7.0.140.0000.07722.00
7.0.90.0600.05019.89
7.0.80.0500.06719.96
7.0.70.0470.05319.86
7.0.60.0530.07019.96
7.0.50.0330.06020.23
7.0.40.0030.06720.19
7.0.30.0070.08320.18
7.0.20.0170.07720.04
7.0.10.0070.05720.09
7.0.00.0070.08020.12
5.6.280.0070.06721.12
5.6.240.0000.07320.62
5.6.230.0030.07020.68
5.6.220.0070.05020.49
5.6.210.0100.04020.73
5.6.200.0000.04021.04
5.6.190.0070.07021.15
5.6.180.0030.07720.93
5.6.170.0230.05021.05
5.6.160.0170.07021.13
5.6.150.0330.04721.00
5.6.140.0070.08321.09
5.6.130.0000.06321.02
5.6.120.0130.05320.95
5.6.110.0030.04721.09
5.6.100.0030.08721.00
5.6.90.0030.08021.00
5.6.80.0100.03720.44
5.6.70.0070.07320.47
5.6.60.0200.06720.34
5.6.50.0030.04720.36
5.6.40.0070.04320.51
5.6.30.0070.07720.40
5.6.20.0070.07720.44
5.6.10.0030.08020.38
5.6.00.0070.07020.47
5.5.380.0100.08020.31
5.5.370.0070.08320.33
5.5.360.0170.07020.35
5.5.350.0070.08320.39
5.5.340.0030.04020.75
5.5.330.0000.06320.94
5.5.320.0030.03720.75
5.5.310.0070.05320.85
5.5.300.0070.08020.76
5.5.290.0130.08020.94
5.5.280.0100.08020.88
5.5.270.0070.08320.91
5.5.260.0070.08020.65
5.5.250.0070.05020.62
5.5.240.0130.07320.31
5.5.230.0070.08320.28
5.5.220.0000.05020.30
5.5.210.0170.05720.20
5.5.200.0100.07720.01
5.5.190.0130.08020.16
5.5.180.0130.07320.24
5.5.160.0170.06720.13
5.5.150.0070.07720.27
5.5.140.0130.06320.00
5.5.130.0100.08020.27
5.5.120.0070.08020.25
5.5.110.0000.05320.22
5.5.100.0070.07720.15
5.5.90.0100.05720.11
5.5.80.0030.06720.09
5.5.70.0200.03320.18
5.5.60.0130.06720.16
5.5.50.0100.06720.17
5.5.40.0170.06320.13
5.5.30.0100.08020.11
5.5.20.0070.08720.16
5.5.10.0100.07020.15
5.5.00.0070.06020.12
5.4.450.0000.07719.42
5.4.440.0070.07319.55
5.4.430.0070.04319.41
5.4.420.0100.08019.46
5.4.410.0100.07019.04
5.4.400.0000.06319.13
5.4.390.0070.06719.05
5.4.380.0030.07318.90
5.4.370.0030.06719.16
5.4.360.0030.05018.85
5.4.350.0070.08019.21
5.4.340.0030.08019.05
5.4.320.0030.07719.18
5.4.310.0100.06719.08
5.4.300.0070.07719.04
5.4.290.0070.07019.09
5.4.280.0130.06718.90
5.4.270.0030.04319.13
5.4.260.0100.04018.90
5.4.250.0130.06719.08
5.4.240.0100.07019.13
5.4.230.0130.04318.84
5.4.220.0030.07719.13
5.4.210.0070.08319.12
5.4.200.0030.07019.12
5.4.190.0100.06719.20
5.4.180.0030.04719.03
5.4.170.0030.07719.12
5.4.160.0130.07019.16
5.4.150.0000.08018.83
5.4.140.0070.05016.20
5.4.130.0000.05716.25
5.4.120.0100.04016.41
5.4.110.0030.05016.49
5.4.100.0070.04316.50
5.4.90.0070.04316.54
5.4.80.0070.07016.54
5.4.70.0130.06716.43
5.4.60.0030.07316.27
5.4.50.0000.06316.36
5.4.40.0230.02316.51
5.4.30.0070.04316.25
5.4.20.0100.07016.46
5.4.10.0070.04016.44
5.4.00.0170.05015.75
5.3.290.0030.07314.74
5.3.280.0130.06014.67
5.3.270.0070.07714.55
5.3.260.0200.06014.65
5.3.250.0100.03714.61
5.3.240.0070.04714.77
5.3.230.0130.06714.69
5.3.220.0100.04014.65
5.3.210.0070.05714.56
5.3.200.0070.05314.71
5.3.190.0030.07714.59
5.3.180.0170.03714.72
5.3.170.0170.06714.54
5.3.160.0130.04014.55
5.3.150.0170.06714.68
5.3.140.0030.07314.58
5.3.130.0000.05014.50
5.3.120.0070.07714.50
5.3.110.0100.04714.69
5.3.100.0170.06714.20
5.3.90.0130.06714.15
5.3.80.0070.07714.04
5.3.70.0100.07714.03
5.3.60.0100.06714.09
5.3.50.0100.06313.95
5.3.40.0070.04714.08
5.3.30.0070.07014.08
5.3.20.0030.04013.80
5.3.10.0030.06013.77
5.3.00.0130.04713.75
5.2.170.0070.03011.31
5.2.160.0070.03011.10
5.2.150.0030.02711.09
5.2.140.0030.05011.06
5.2.130.0130.04311.19
5.2.120.0000.04711.18
5.2.110.0130.05711.27
5.2.100.0030.06311.04
5.2.90.0070.05311.04
5.2.80.0030.05711.18
5.2.70.0030.03711.11
5.2.60.0000.05311.18
5.2.50.0070.05311.11
5.2.40.0070.05011.09
5.2.30.0070.05311.01
5.2.20.0070.06011.05
5.2.10.0030.06010.88
5.2.00.0100.05710.68
5.1.60.0030.0409.87
5.1.50.0030.0539.86
5.1.40.0070.0509.84
5.1.30.0070.05310.43
5.1.20.0100.04010.45
5.1.10.0100.05310.22
5.1.00.0070.02310.11
5.0.50.0070.0338.57
5.0.40.0100.0378.45
5.0.30.0000.0338.34
5.0.20.0000.0208.32
5.0.10.0030.0208.29
5.0.00.0000.0378.20
4.4.90.0030.0337.02
4.4.80.0000.0377.02
4.4.70.0000.0337.02
4.4.60.0030.0337.02
4.4.50.0100.0207.02
4.4.40.0030.0537.02
4.4.30.0030.0377.02
4.4.20.0030.0207.02
4.4.10.0030.0337.02
4.4.00.0070.0537.02
4.3.110.0030.0207.02
4.3.100.0070.0237.02
4.3.90.0000.0277.02
4.3.80.0030.0237.02
4.3.70.0000.0177.02
4.3.60.0030.0337.02
4.3.50.0000.0307.02
4.3.40.0030.0277.02
4.3.30.0000.0377.02
4.3.20.0000.0377.02
4.3.10.0000.0337.02
4.3.00.0000.0307.02

preferences:
38.2 ms | 401 KiB | 5 Q