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) { 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)); */ 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)
8.3.70.0160.00016.75
8.3.60.0040.01118.55
8.3.50.0050.01221.92
8.3.40.0110.00718.84
8.3.30.0080.00819.01
8.3.20.0030.00620.20
8.3.10.0030.00522.12
8.3.00.0070.00022.41
8.2.180.0040.01416.48
8.2.170.0120.00322.96
8.2.160.0100.00320.94
8.2.150.0070.01124.18
8.2.140.0060.00324.66
8.2.130.0050.00326.16
8.2.120.0030.00617.63
8.2.110.0110.00722.05
8.2.100.0090.00317.84
8.2.90.0000.00817.84
8.2.80.0030.00617.97
8.2.70.0090.00017.59
8.2.60.0080.00018.04
8.2.50.0040.00418.07
8.2.40.0050.00318.16
8.2.30.0040.00418.18
8.2.20.0040.00417.66
8.2.10.0040.00417.82
8.2.00.0040.00417.80
8.1.280.0150.00325.92
8.1.270.0070.01023.96
8.1.260.0000.00826.35
8.1.250.0100.01028.09
8.1.240.0040.00423.83
8.1.230.0030.00721.16
8.1.220.0030.00517.74
8.1.210.0060.00318.97
8.1.200.0070.00317.35
8.1.190.0040.00417.78
8.1.180.0000.00818.10
8.1.170.0040.00418.77
8.1.160.0080.00022.14
8.1.150.0000.00718.63
8.1.140.0000.00717.36
8.1.130.0080.00017.74
8.1.120.0000.00717.32
8.1.110.0040.00417.50
8.1.100.0040.00417.44
8.1.90.0040.00417.50
8.1.80.0070.00017.34
8.1.70.0000.00717.47
8.1.60.0000.00817.58
8.1.50.0000.00817.59
8.1.40.0030.00517.57
8.1.30.0030.00617.56
8.1.20.0050.00317.55
8.1.10.0080.00017.55
8.1.00.0040.00417.35
8.0.300.0040.00420.00
8.0.290.0000.00817.30
8.0.280.0040.00418.46
8.0.270.0030.00317.37
8.0.260.0090.00016.96
8.0.250.0040.00417.11
8.0.240.0070.00017.14
8.0.230.0000.00716.98
8.0.220.0030.00317.04
8.0.210.0000.00717.06
8.0.200.0050.00217.08
8.0.190.0000.00717.09
8.0.180.0050.00317.07
8.0.170.0030.00616.95
8.0.160.0040.00416.97
8.0.150.0030.00617.00
8.0.140.0060.00316.91
8.0.130.0000.00613.42
8.0.120.0040.00416.96
8.0.110.0000.00717.02
8.0.100.0040.00416.86
8.0.90.0040.00417.14
8.0.80.0060.00916.91
8.0.70.0040.00417.04
8.0.60.0040.00416.97
8.0.50.0040.00417.08
8.0.30.0110.00717.01
8.0.20.0110.00817.40
8.0.10.0000.00817.06
8.0.00.0130.00516.71
7.4.330.0030.00315.07
7.4.320.0030.00316.50
7.4.300.0030.00316.51
7.4.290.0030.00316.64
7.4.280.0070.00016.42
7.4.270.0070.00016.57
7.4.260.0030.00316.42
7.4.250.0040.00416.49
7.4.240.0000.00716.66
7.4.230.0030.00316.65
7.4.220.0090.00916.46
7.4.210.0100.00416.53
7.4.200.0030.00316.71
7.4.190.0000.00716.49
7.4.160.0090.00916.65
7.4.150.0060.01317.40
7.4.140.0150.01517.86
7.4.130.0100.00716.66
7.4.120.0110.00616.48
7.4.110.0210.00016.39
7.4.100.0090.00916.63
7.4.90.0060.01216.47
7.4.80.0090.00916.61
7.4.70.0090.01516.48
7.4.60.0130.00316.47
7.4.50.0000.00716.58
7.4.40.0070.01022.77
7.4.30.0080.00816.41
7.4.00.0060.01115.14
7.3.330.0050.00013.23
7.3.320.0020.00213.30
7.3.310.0000.00816.35
7.3.300.0030.00316.32
7.3.290.0110.00316.28
7.3.280.0120.00616.34
7.3.270.0030.01417.40
7.3.260.0140.01016.34
7.3.250.0200.00416.52
7.3.240.0150.00616.38
7.3.230.0030.01516.50
7.3.210.0100.00616.43
7.3.200.0030.01519.39
7.3.190.0070.01116.44
7.3.180.0060.00916.39
7.3.170.0100.00616.50
7.3.160.0090.01216.36
7.3.120.0050.01314.81
7.3.110.0070.01115.05
7.3.100.0040.01115.08
7.3.90.0100.00315.04
7.3.80.0090.00914.96
7.3.70.0030.01414.78
7.3.60.0000.01014.94
7.3.50.0030.01014.94
7.3.40.0000.01114.91
7.3.30.0110.00414.97
7.3.20.0080.00416.43
7.3.10.0070.00716.34
7.3.00.0070.00716.53
7.2.330.0140.00316.76
7.2.320.0000.01616.49
7.2.310.0140.00316.51
7.2.300.0130.00416.52
7.2.290.0070.01116.24
7.2.250.0070.01315.14
7.2.240.0030.01414.93
7.2.230.0070.00814.97
7.2.220.0030.00615.03
7.2.210.0070.01015.14
7.2.200.0030.01414.82
7.2.190.0070.01015.04
7.2.180.0000.01114.96
7.2.170.0060.00614.93
7.2.60.0070.00716.80
7.2.50.0060.00616.68
7.1.330.0000.01315.63
7.1.320.0060.00915.88
7.1.310.0060.01015.78
7.1.300.0000.01115.83
7.1.290.0040.00815.66
7.1.280.0070.00715.70
7.1.270.0070.00415.78
7.1.260.0040.01115.61
7.1.200.0040.01215.77
7.1.100.0050.00517.65
7.1.70.0030.01317.01
7.1.60.0130.00619.82
7.1.50.0070.01516.83
7.1.00.0030.07022.36
7.0.200.0070.00416.77
7.0.140.0100.06721.96
7.0.90.0130.08019.96
7.0.80.0100.08319.94
7.0.70.0100.08019.98
7.0.60.0170.07719.98
7.0.50.0100.05020.27
7.0.40.0030.04320.16
7.0.30.0100.08020.18
7.0.20.0100.05720.10
7.0.10.0130.08020.07
7.0.00.0030.08720.12
5.6.280.0030.09020.88
5.6.230.0070.08720.68
5.6.220.0170.04720.53
5.6.210.0100.04720.77
5.6.200.0000.04720.96
5.6.190.0100.08321.05
5.6.180.0170.07320.97
5.6.170.0070.08721.07
5.6.160.0170.07720.95
5.6.150.0070.08321.11
5.6.140.0100.07321.03
5.6.130.0170.07021.13
5.6.120.0100.08320.89
5.6.110.0030.09320.93
5.6.100.0070.08721.08
5.6.90.0170.07021.10
5.6.80.0100.07320.44
5.6.70.0000.06320.44
5.6.60.0230.06320.45
5.6.50.0030.05320.46
5.6.40.0100.07020.40
5.6.30.0100.07320.42
5.6.20.0100.07320.30
5.6.10.0170.05320.45
5.6.00.0030.05020.38
5.5.370.0170.04720.38
5.5.360.0130.07720.39
5.5.350.0130.04320.49
5.5.340.0100.04020.79
5.5.330.0130.04720.77
5.5.320.0030.07020.93
5.5.310.0170.06320.82
5.5.300.0030.08720.89
5.5.290.0170.07020.92
5.5.280.0000.04720.93
5.5.270.0170.07720.88
5.5.260.0070.08320.77
5.5.250.0100.05320.75
5.5.240.0070.07020.33
5.5.230.0070.07720.29
5.5.220.0100.08320.22
5.5.210.0130.04320.20
5.5.200.0200.04020.30
5.5.190.0100.04720.25
5.5.180.0030.05720.22
5.5.160.0100.07020.13
5.5.150.0100.07720.20
5.5.140.0030.04320.13
5.5.130.0070.06720.29
5.5.120.0100.07320.00
5.5.110.0070.05020.22
5.5.100.0100.06320.00
5.5.90.0130.06720.09
5.5.80.0070.07720.16
5.5.70.0030.05720.12
5.5.60.0100.05320.10
5.5.50.0070.07720.17
5.5.40.0030.08020.05
5.5.30.0030.07320.09
5.5.20.0030.07020.06
5.5.10.0100.04720.00
5.5.00.0000.07320.09
5.4.450.0070.04719.47
5.4.440.0030.07719.17
5.4.430.0030.08019.35
5.4.420.0070.04719.35
5.4.410.0100.07719.32
5.4.400.0030.07319.20
5.4.390.0000.06719.09
5.4.380.0030.07718.94
5.4.370.0030.05319.20
5.4.360.0130.07318.90
5.4.350.0070.07319.09
5.4.340.0100.07719.04
5.4.320.0100.07719.04
5.4.310.0070.05719.07
5.4.300.0000.08319.03
5.4.290.0070.03719.13
5.4.280.0070.05019.12
5.4.270.0070.07719.12
5.4.260.0100.06019.20
5.4.250.0100.04319.05
5.4.240.0070.07319.23
5.4.230.0030.08318.94
5.4.220.0070.04319.12
5.4.210.0070.07719.00
5.4.200.0200.06318.93
5.4.190.0030.05719.04
5.4.180.0100.06719.12
5.4.170.0170.04319.19
5.4.160.0130.07318.85
5.4.150.0000.08719.04
5.4.140.0130.07016.50
5.4.130.0100.07016.41
5.4.120.0000.07316.41
5.4.110.0070.07316.52
5.4.100.0100.06716.51
5.4.90.0100.07316.56
5.4.80.0070.06716.51
5.4.70.0200.06016.50
5.4.60.0030.07016.33
5.4.50.0130.04316.39
5.4.40.0070.07016.41
5.4.30.0070.05016.41
5.4.20.0000.06316.44
5.4.10.0130.06016.30
5.4.00.0170.06015.85
5.3.290.0070.07314.67
5.3.280.0030.04714.71
5.3.270.0000.08314.64
5.3.260.0070.07714.70
5.3.250.0070.06314.69
5.3.240.0070.07014.73
5.3.230.0070.07314.64
5.3.220.0170.04014.55
5.3.210.0070.08014.64
5.3.200.0100.07014.60
5.3.190.0070.07714.66
5.3.180.0100.07314.57
5.3.170.0100.07014.55
5.3.160.0100.07014.54
5.3.150.0030.04014.65
5.3.140.0000.08014.57
5.3.130.0000.08314.66
5.3.120.0130.05014.62
5.3.110.0030.07314.59
5.3.100.0100.07014.13
5.3.90.0070.07314.18
5.3.80.0170.06314.06
5.3.70.0030.07714.02
5.3.60.0130.04314.03
5.3.50.0070.06313.96
5.3.40.0100.07014.08
5.3.30.0070.07313.82
5.3.20.0030.06013.72
5.3.10.0030.05313.67
5.3.00.0070.05713.68
5.2.170.0070.05711.20
5.2.160.0030.03711.09
5.2.150.0070.06011.07
5.2.140.0030.06311.09
5.2.130.0100.05711.03
5.2.120.0100.03711.03
5.2.110.0030.03311.25
5.2.100.0030.06311.25
5.2.90.0070.05711.19
5.2.80.0070.05711.26
5.2.70.0030.03711.05
5.2.60.0030.06010.95
5.2.50.0030.06011.11
5.2.40.0030.06311.04
5.2.30.0030.04711.05
5.2.20.0070.05711.01
5.2.10.0030.06011.00
5.2.00.0030.06010.80
5.1.60.0000.03310.14
5.1.50.0070.03010.11
5.1.40.0030.05710.05
5.1.30.0030.04010.42
5.1.20.0070.03710.40
5.1.10.0070.05310.11
5.1.00.0070.05710.20
5.0.50.0030.0308.59
5.0.40.0030.0378.59
5.0.30.0070.0578.59
5.0.20.0070.0408.59
5.0.10.0100.0408.59
5.0.00.0070.0608.59
4.4.90.0030.0338.59
4.4.80.0000.0208.59
4.4.70.0030.0338.59
4.4.60.0030.0278.59
4.4.50.0030.0278.59
4.4.40.0000.0578.59
4.4.30.0030.0308.59
4.4.20.0030.0178.59
4.4.10.0070.0238.59
4.4.00.0000.0538.59
4.3.110.0070.0338.59
4.3.100.0000.0378.59
4.3.90.0030.0338.59
4.3.80.0000.0538.59
4.3.70.0070.0338.59
4.3.60.0030.0308.59
4.3.50.0000.0378.59
4.3.40.0000.0578.59
4.3.30.0000.0378.59
4.3.20.0030.0338.59
4.3.10.0000.0378.59
4.3.00.0000.0308.59

preferences:
46.16 ms | 401 KiB | 5 Q