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) { $k = (string)$k; if (preg_match('//u', $k)) { $k = _js_enc_value($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) && preg_match('//u', $value): return '"' . _js_uc_esc($value) . '"'; default: return $value; } } function _js_uc_esc($value) { $pattern = "@[\x08-\x0a\x0c\x0d\\\\\"/]|([^\x08-\x0a\x0c\x0d\x20-\x7f\\\\\"/])++@u"; return preg_replace_callback($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\x0a\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)
8.3.70.0140.01016.88
8.3.60.0070.01116.63
8.3.50.0100.00522.15
8.3.40.0110.00818.84
8.3.30.0070.00719.09
8.3.20.0000.00720.23
8.3.10.0030.00623.61
8.3.00.0030.00519.51
8.2.180.0140.00716.75
8.2.170.0150.00022.96
8.2.160.0000.01420.47
8.2.150.0040.00424.18
8.2.140.0030.00524.66
8.2.130.0070.00726.16
8.2.120.0040.00422.26
8.2.110.0060.00322.28
8.2.100.0030.00919.70
8.2.90.0040.00419.24
8.2.80.0080.00017.97
8.2.70.0000.01017.75
8.2.60.0000.00817.93
8.2.50.0040.00418.07
8.2.40.0000.00919.76
8.2.30.0000.00718.25
8.2.20.0090.00017.87
8.2.10.0050.00218.23
8.2.00.0080.00017.84
8.1.280.0060.00925.92
8.1.270.0030.00524.01
8.1.260.0030.00626.35
8.1.250.0030.00628.09
8.1.240.0100.00022.16
8.1.230.0070.00419.28
8.1.220.0000.00917.91
8.1.210.0040.00418.77
8.1.200.0060.00317.47
8.1.190.0000.00817.47
8.1.180.0000.00818.10
8.1.170.0050.00318.68
8.1.160.0030.00522.00
8.1.150.0000.00718.75
8.1.140.0000.00717.47
8.1.130.0000.00717.89
8.1.120.0000.00717.46
8.1.110.0030.00617.57
8.1.100.0040.00417.41
8.1.90.0000.00717.48
8.1.80.0000.00817.42
8.1.70.0070.00017.52
8.1.60.0110.00017.65
8.1.50.0050.00317.53
8.1.40.0040.00417.49
8.1.30.0070.00317.69
8.1.20.0060.00317.63
8.1.10.0000.00917.61
8.1.00.0040.00417.58
8.0.300.0070.00018.77
8.0.290.0000.00717.43
8.0.280.0030.00318.51
8.0.270.0030.00317.37
8.0.260.0030.00317.20
8.0.250.0070.00017.10
8.0.240.0000.00717.00
8.0.230.0030.00317.11
8.0.220.0000.00717.01
8.0.210.0000.00817.07
8.0.200.0050.00517.09
8.0.190.0050.00317.00
8.0.180.0030.00617.03
8.0.170.0000.00817.10
8.0.160.0040.00416.97
8.0.150.0070.00016.89
8.0.140.0050.00217.04
8.0.130.0040.00413.44
8.0.120.0050.00316.88
8.0.110.0070.00016.99
8.0.100.0080.00017.09
8.0.90.0040.00417.08
8.0.80.0100.01017.13
8.0.70.0050.00317.06
8.0.60.0070.00016.85
8.0.50.0040.00416.82
8.0.30.0120.01217.19
8.0.20.0130.00517.40
8.0.10.0030.00617.02
8.0.00.0130.00516.77
7.4.330.0050.00015.00
7.4.320.0000.00716.56
7.4.300.0030.00316.59
7.4.290.0030.00516.67
7.4.280.0000.00716.57
7.4.270.0030.00516.62
7.4.260.0000.00716.55
7.4.250.0050.00316.55
7.4.240.0030.00316.55
7.4.230.0030.00516.75
7.4.220.0090.01216.77
7.4.210.0050.01016.62
7.4.200.0030.00316.48
7.4.190.0000.00716.60
7.4.160.0040.01316.43
7.4.150.0070.01017.40
7.4.140.0070.01217.86
7.4.130.0130.00816.61
7.4.120.0070.00916.54
7.4.110.0110.00616.50
7.4.100.0180.00016.64
7.4.90.0060.01116.61
7.4.80.0090.01219.39
7.4.70.0060.01016.71
7.4.60.0140.00316.40
7.4.50.0080.00016.34
7.4.40.0110.00516.60
7.4.30.0060.01016.44
7.4.10.0070.01115.09
7.4.00.0100.00714.94
7.3.330.0020.00313.14
7.3.320.0050.00013.38
7.3.310.0080.00016.37
7.3.300.0030.00316.38
7.3.290.0030.01216.39
7.3.280.0080.01216.35
7.3.270.0090.00917.40
7.3.260.0060.01216.59
7.3.250.0060.01416.30
7.3.240.0080.01016.39
7.3.230.0070.01116.39
7.3.210.0110.00716.62
7.3.200.0060.01216.38
7.3.190.0100.01316.38
7.3.180.0060.01016.29
7.3.170.0030.01316.45
7.3.160.0120.00316.39
7.3.130.0090.00915.04
7.3.120.0080.01014.59
7.3.110.0090.00614.77
7.3.100.0110.00314.81
7.3.90.0070.00714.90
7.3.80.0030.01014.93
7.3.70.0040.00914.90
7.3.60.0100.00314.94
7.3.50.0040.00614.96
7.3.40.0060.00514.67
7.3.30.0100.00314.77
7.3.20.0080.00716.56
7.3.10.0080.00616.54
7.3.00.0070.00616.44
7.2.330.0090.00916.74
7.2.320.0090.00916.61
7.2.310.0060.01216.78
7.2.300.0060.01016.66
7.2.290.0100.00716.48
7.2.260.0070.01114.81
7.2.250.0050.01214.86
7.2.240.0050.01214.93
7.2.230.0040.01315.07
7.2.220.0080.00614.96
7.2.210.0070.00915.17
7.2.200.0080.00615.08
7.2.190.0060.00714.94
7.2.180.0050.01015.00
7.2.170.0070.00814.87
7.2.160.0060.00614.83
7.2.150.0080.00716.93
7.2.140.0080.00616.82
7.2.130.0080.00816.70
7.2.120.0050.00916.87
7.2.110.0050.01016.97
7.2.100.0060.00816.95
7.2.90.0080.00716.84
7.2.80.0000.01516.83
7.2.70.0080.00616.92
7.2.60.0040.00916.98
7.2.50.0070.00716.93
7.2.40.0080.00616.95
7.2.30.0040.01016.81
7.2.20.0050.00816.92
7.2.10.0060.00616.77
7.2.00.0070.00717.48
7.1.330.0050.01115.62
7.1.320.0100.00615.90
7.1.310.0070.00515.81
7.1.300.0060.00915.85
7.1.290.0070.00715.70
7.1.280.0050.00915.65
7.1.270.0020.01315.68
7.1.260.0090.00415.64
7.1.250.0050.01015.74
7.1.240.0060.00815.64
7.1.230.0080.00315.58
7.1.220.0080.00615.61
7.1.210.0080.00615.66
7.1.200.0050.01115.46
7.1.190.0030.01015.75
7.1.180.0030.00715.80
7.1.170.0050.00715.70
7.1.160.0070.00515.62
7.1.150.0060.00815.85
7.1.140.0050.00815.72
7.1.130.0040.00715.60
7.1.120.0060.00515.69
7.1.110.0040.00915.76
7.1.100.0050.00816.31
7.1.90.0050.00815.66
7.1.80.0040.00715.64
7.1.70.0030.00816.05
7.1.60.0090.00916.61
7.1.50.0050.01015.98
7.1.40.0080.00715.67
7.1.30.0080.00515.70
7.1.20.0030.00715.49
7.1.10.0080.00515.55
7.1.00.0020.02617.28
7.0.330.0070.00715.24
7.0.320.0060.00615.31
7.0.310.0040.01015.21
7.0.300.0090.00415.24
7.0.290.0040.00915.36
7.0.280.0050.00815.13
7.0.270.0070.00615.37
7.0.260.0070.00415.32
7.0.250.0070.00515.34
7.0.240.0050.00915.33
7.0.230.0050.00915.14
7.0.220.0060.00715.42
7.0.210.0060.00515.27
7.0.200.0050.00715.54
7.0.190.0040.00915.21
7.0.180.0040.00715.36
7.0.170.0080.00415.30
7.0.160.0060.00615.19
7.0.150.0050.00715.37
7.0.140.0010.02717.02
7.0.130.0030.01115.37
7.0.120.0040.00615.35
7.0.110.0060.00615.22
7.0.100.0060.00615.24
7.0.90.0080.01916.50
7.0.80.0100.01716.53
7.0.70.0170.01416.51
7.0.60.0150.01716.46
7.0.50.0150.02516.56
7.0.40.0060.01615.16
7.0.30.0040.02614.99
7.0.20.0040.02215.09
7.0.10.0050.02515.12
7.0.00.0040.01815.13
5.6.400.0040.01214.27
5.6.390.0080.00614.44
5.6.380.0050.00714.40
5.6.370.0040.01114.34
5.6.360.0060.00714.29
5.6.350.0090.00514.54
5.6.340.0050.00714.35
5.6.330.0040.00814.24
5.6.320.0050.00514.17
5.6.310.0060.00614.29
5.6.300.0050.01014.33
5.6.290.0050.00914.46
5.6.280.0060.02415.94
5.6.270.0070.00514.38
5.6.260.0030.00714.35
5.6.250.0100.00614.37
5.6.240.0040.02815.89
5.6.230.0020.02715.93
5.6.220.0040.01615.88
5.6.210.0060.02316.04
5.6.200.0060.02415.98
5.6.190.0100.02316.01
5.6.180.0090.02315.92
5.6.170.0070.02615.95
5.6.160.0060.02615.99
5.6.150.0050.02315.88
5.6.140.0040.02415.99
5.6.130.0080.02515.93
5.6.120.0100.02415.86
5.6.110.0070.02216.00
5.6.100.0050.02615.95
5.6.90.0050.02215.98
5.6.80.0060.02215.75
5.6.70.0100.01115.67
5.6.60.0040.02115.68
5.6.50.0070.02115.89
5.6.40.0060.02715.83
5.6.30.0040.02615.80
5.6.20.0100.02215.82
5.6.10.0100.02715.85
5.6.00.0030.02415.86
5.5.380.0030.02715.05
5.5.370.0080.01915.02
5.5.360.0070.02415.06
5.5.350.0070.01914.92
5.5.340.0050.02615.16
5.5.330.0050.02515.16
5.5.320.0050.02015.04
5.5.310.0070.02315.13
5.5.300.0050.02515.01
5.5.290.0070.02315.11
5.5.280.0090.02515.20
5.5.270.0090.02315.06
5.5.260.0110.02315.03
5.5.250.0060.01915.05
5.5.240.0090.02214.89
5.5.230.0050.02414.83
5.5.220.0070.02015.04
5.5.210.0070.02114.94
5.5.200.0070.01214.99
5.5.190.0050.02515.00
5.5.180.0060.01715.01
5.5.170.0020.00813.21
5.5.160.0070.02214.93
5.5.150.0070.02414.91
5.5.140.0080.02014.89
5.5.130.0040.02814.99
5.5.120.0080.01714.85
5.5.110.0050.02514.95
5.5.100.0080.02114.86
5.5.90.0040.02414.87
5.5.80.0070.01614.89
5.5.70.0040.03014.89
5.5.60.0020.02414.79
5.5.50.0070.02014.84
5.5.40.0070.02214.89
5.5.30.0030.02114.87
5.5.20.0040.02614.85
5.5.10.0050.01914.93
5.5.00.0070.02314.89
5.4.450.0080.01413.49
5.4.440.0030.02413.50
5.4.430.0040.02413.44
5.4.420.0060.02313.35
5.4.410.0020.02413.42
5.4.400.0050.01813.36
5.4.390.0020.01513.32
5.4.380.0020.01913.33
5.4.370.0010.02613.33
5.4.360.0040.01713.37
5.4.350.0070.01513.37
5.4.340.0060.02213.45
5.4.330.0020.00811.31
5.4.320.0030.02513.38
5.4.310.0070.02113.35
5.4.300.0050.01513.30
5.4.290.0030.01613.31
5.4.280.0090.02313.29
5.4.270.0040.01713.43
5.4.260.0040.01713.35
5.4.250.0040.02413.29
5.4.240.0060.01513.34
5.4.230.0040.02413.26
5.4.220.0030.01913.27
5.4.210.0030.02213.37
5.4.200.0040.02313.51
5.4.190.0050.02013.44
5.4.180.0080.01113.37
5.4.170.0050.01313.48
5.4.160.0060.01613.30
5.4.150.0080.01613.28
5.4.140.0080.02312.80
5.4.130.0050.01812.69
5.4.120.0050.02312.67
5.4.110.0060.02112.67
5.4.100.0050.02212.72
5.4.90.0050.02112.74
5.4.80.0030.02012.76
5.4.70.0070.02212.78
5.4.60.0010.02312.66
5.4.50.0040.01612.64
5.4.40.0070.02112.74
5.4.30.0050.01412.76
5.4.20.0060.01812.73
5.4.10.0060.01412.75
5.4.00.0060.01312.44
5.3.290.0050.02412.09
5.3.280.0040.02012.02
5.3.270.0090.01912.08
5.3.260.0080.02012.11
5.3.250.0080.01412.09
5.3.240.0060.01912.02
5.3.230.0070.01812.05
5.3.220.0070.02112.08
5.3.210.0080.01312.06
5.3.200.0030.02311.98
5.3.190.0050.01412.06
5.3.180.0070.01812.06
5.3.170.0060.01212.10
5.3.160.0060.02112.00
5.3.150.0020.02312.11
5.3.140.0020.02112.09
5.3.130.0050.01912.07
5.3.120.0050.01412.00
5.3.110.0020.01812.03
5.3.100.0040.02211.94
5.3.90.0070.02011.93
5.3.80.0050.01811.87
5.3.70.0040.02411.91
5.3.60.0070.02011.97
5.3.50.0050.01311.91
5.3.40.0070.01311.93
5.3.30.0050.02311.98
5.3.20.0080.01511.85
5.3.10.0080.02011.74
5.3.00.0060.01411.76
5.2.170.0080.03210.30
5.2.160.0050.02210.46
5.2.150.0050.03510.40
5.2.140.0030.03110.40
5.2.130.0010.03610.40
5.2.120.0060.01510.44
5.2.110.0010.02610.28
5.2.100.0020.02610.38
5.2.90.0050.01810.37
5.2.80.0080.01510.36
5.2.70.0030.03310.29
5.2.60.0060.02910.33
5.2.50.0030.02910.22
5.2.40.0070.02910.35
5.2.30.0020.03510.19
5.2.20.0050.01710.21
5.2.10.0030.02910.17
5.2.00.0030.0349.85
5.1.60.0020.0309.32
5.1.50.0030.0319.29
5.1.40.0040.0259.47
5.1.30.0020.0249.43
5.1.20.0020.0339.56
5.1.10.0010.0319.26
5.1.00.0080.0189.32
5.0.50.0050.0208.50
5.0.40.0030.0218.46
5.0.30.0050.0338.32
5.0.20.0030.0258.35
5.0.10.0030.0188.29
5.0.00.0070.0318.21
4.4.90.0010.0167.58
4.4.80.0000.0207.58
4.4.70.0050.0167.58
4.4.60.0060.0137.58
4.4.50.0030.0087.58
4.4.40.0020.0257.58
4.4.30.0020.0197.58
4.4.20.0000.0197.58
4.4.10.0020.0127.58
4.4.00.0030.0287.58
4.3.110.0060.0167.58
4.3.100.0050.0137.58
4.3.90.0060.0137.58
4.3.80.0020.0297.58
4.3.70.0040.0147.58
4.3.60.0040.0177.58
4.3.50.0030.0187.58
4.3.40.0020.0227.58
4.3.30.0040.0197.58
4.3.20.0020.0117.58
4.3.10.0040.0187.58
4.3.00.0010.0217.58

preferences:
48.99 ms | 401 KiB | 5 Q