Online PHP editor | perf for ihs2Q

@ 2022-09-28T10:32:38Z

<?php

// Set internal encoding to ISO-8859-9 and assign string an initial value of Turkish characters
$t = mb_internal_encoding('ISO-8859-9');
echo "Internal Encoding set? ".$t."\n";

$s = 'ııİöÖğĞçÇşŞ';

$t = mb_internal_encoding();
echo "Internal Encoding: ".$t."\n";

// Check if the string is valid UTF-8 
$t = mb_check_encoding($s, 'UTF-8');
echo "Valid UTF-8? ".$t."\n";

// Check if the string is valid ISO-8859-1 
$t = mb_check_encoding($s, 'ISO-8859-9');
echo "Valid ISO-8859-9? ".$t."\n";

//Convert string from ISO-8859-9 to ISO-8859-9 while internal encoding is ISO-8859-9
$e = mb_convert_encoding($s, 'ISO-8859-9', 'ISO-8859-9');
echo "Convert string to ISO-8859-9 from ISO-8859-9 while internal encoding ISO-8859-9: ".$e."\n";

//Convert string from ISO-8859-9 to ISO-8859-9 while internal encoding is ISO-8859-9
$i = mb_convert_encoding($s, 'ISO-8859-9');
echo "Convert string to ISO-8859-9 with no source supplied: ".$e."\n";

//Convert string to UTF-8 - if using the detected encoding it will fail
$e = mb_convert_encoding($i, 'UTF-8', 'ISO-8859-9');
echo "*** Convert string to UTF-8 from ISO-8859-9: ".$e."\n";

//Display the encoding options available for detection
$t = mb_detect_order();
echo "Detect Order: ".print_r($t)."\n";

//Detect encoding of string without influencing the encoding options
$t = mb_detect_encoding($s);
echo "Encoding detected? ".$t."\n";

//Set a preferred order of matching for detection
$t = mb_detect_order('ASCII,UTF-8,ISO-8859-9,ISO-8859-15');
echo "Detect Order set? ".$t."\n";

//Display the encoding options available for detection
$t = mb_detect_order();
echo "Detect Order: ".print_r($t)."\n";

//Detect encoding of string after setting the preferred order of detection 
$t = mb_detect_encoding($s);
echo "Encoding detected? ".$t."\n";

//Set internal encoding to UTF-8
$t = mb_internal_encoding('UTF-8');
echo "Internal Encoding set? ".$t."\n";

//Convert string from ISO-8859-9 to ISO-8859-9 while internal encoding is UTF-8
$e = mb_convert_encoding($s, 'ISO-8859-9', 'ISO-8859-9');
echo "Convert string ISO-8859-9 from ISO-8859-9 while internal encoding is UTF-8: ".$e."\n";

//Detect encoding of string
$t = mb_detect_encoding($s);
echo "Encoding detected? ".$t."\n";

//Convert string to UTF-8 - if using the detected encoding it will fail
$e = mb_convert_encoding($s, 'UTF-8', $t);
echo "*** Convert string to UTF-8 using Detected Encoding $t as source encoding: ".$e."\n";

//Convert string to UTF-8 - using no source encoding works
$e = mb_convert_encoding($s, 'UTF-8');
echo "*** Convert string to UTF-8 without supplying a source encoding: ".$e."\n";

//Convert string to UTF-8 - if using UTF-8 as source
$e = mb_convert_encoding($s, 'UTF-8', 'UTF-8');
echo "*** Convert string to UTF-8 using UTF-8 as source encoding: ".$e."\n";

//Even though string is initialised and detected as ISO-8859-9 - it seems it is being treated 
//internally as though it is actually UTF-8. 
//Converting to ISO-8859-9 from UTF-8 works - with some characters undisplayable
$e = mb_convert_encoding($s, 'ISO-8859-9', 'UTF-8');
echo "Convert string to ISO-8859-9 from UTF-8: ".$e."\n";

//Converting to this string back to UTF-8 from ISO-8859-9 works
$e = mb_convert_encoding($e, 'UTF-8', 'ISO-8859-9');
echo "Convert resultant string to UTF-8 from ISO-8859-9: ".$e."\n";

//Converting to this string back to UTF-8 from UTF-8 works
$e = mb_convert_encoding($e, 'UTF-8', 'UTF-8');
echo "Convert resultant string to UTF-8 from UTF-8: ".$e."\n";

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).

Version	System time (s)	User time (s)	Memory (MiB)
8.5.0	0.009	0.012	21.71
8.4.15	0.002	0.000	14.05
8.4.14	0.010	0.010	17.51
8.4.13	0.012	0.009	17.75
8.4.12	0.005	0.004	20.63
8.4.11	0.011	0.009	22.24
8.4.10	0.018	0.007	17.65
8.4.9	0.005	0.004	19.46
8.4.8	0.010	0.010	22.18
8.4.7	0.007	0.009	17.73
8.4.6	0.017	0.004	18.73
8.4.5	0.013	0.008	17.66
8.4.4	0.006	0.013	17.85
8.4.3	0.009	0.013	20.68
8.4.2	0.016	0.003	19.79
8.4.1	0.003	0.016	22.11
8.3.28	0.009	0.011	18.47
8.3.27	0.011	0.009	16.58
8.3.26	0.015	0.005	16.71
8.3.25	0.005	0.003	18.80
8.3.24	0.003	0.005	16.72
8.3.23	0.014	0.005	16.76
8.3.22	0.013	0.008	17.41
8.3.21	0.007	0.012	16.48
8.3.20	0.005	0.004	18.40
8.3.19	0.010	0.009	19.22
8.3.18	0.010	0.010	18.32
8.3.17	0.020	0.000	18.87
8.3.16	0.011	0.007	16.76
8.3.15	0.007	0.011	18.22
8.3.14	0.012	0.003	16.46
8.3.13	0.006	0.003	18.54
8.3.12	0.006	0.003	20.55
8.3.11	0.007	0.003	18.38
8.3.10	0.006	0.003	18.46
8.3.9	0.004	0.004	26.77
8.3.8	0.004	0.007	16.88
8.3.7	0.009	0.009	16.61
8.3.6	0.007	0.011	16.63
8.3.5	0.003	0.017	20.30
8.3.4	0.010	0.010	20.25
8.3.3	0.011	0.004	18.66
8.3.2	0.002	0.005	24.18
8.3.1	0.005	0.003	24.66
8.3.0	0.000	0.007	26.16
8.2.29	0.004	0.004	20.34
8.2.28	0.008	0.008	18.46
8.2.27	0.008	0.000	19.14
8.2.26	0.005	0.002	16.72
8.2.25	0.005	0.003	18.65
8.2.24	0.013	0.006	16.79
8.2.23	0.000	0.008	20.94
8.2.22	0.007	0.003	24.06
8.2.21	0.004	0.004	26.77
8.2.20	0.009	0.000	18.54
8.2.19	0.014	0.007	16.75
8.2.18	0.007	0.010	25.92
8.2.17	0.015	0.006	19.20
8.2.16	0.007	0.007	22.96
8.2.15	0.007	0.003	25.66
8.2.14	0.004	0.004	24.66
8.2.13	0.009	0.000	26.16
8.2.12	0.007	0.000	26.16
8.2.11	0.010	0.000	19.57
8.2.10	0.006	0.006	18.03
8.2.9	0.004	0.007	17.88
8.2.8	0.003	0.006	19.03
8.2.7	0.008	0.000	18.30
8.2.6	0.004	0.004	18.11
8.2.5	0.008	0.000	18.10
8.2.4	0.003	0.006	19.47
8.2.3	0.004	0.004	19.40
8.2.2	0.004	0.004	19.42
8.2.1	0.003	0.006	18.48
8.2.0	0.005	0.003	19.64
8.1.33	0.005	0.005	18.46
8.1.32	0.012	0.008	16.21
8.1.31	0.000	0.014	18.69
8.1.30	0.004	0.012	18.23
8.1.29	0.004	0.004	30.84
8.1.28	0.007	0.007	25.92
8.1.27	0.004	0.004	24.66
8.1.26	0.004	0.004	26.35
8.1.25	0.005	0.003	28.09
8.1.24	0.007	0.003	19.34
8.1.23	0.012	0.000	17.84
8.1.22	0.000	0.008	17.77
8.1.21	0.006	0.003	18.77
8.1.20	0.007	0.004	17.48
8.1.19	0.004	0.004	17.60
8.1.18	0.006	0.003	18.10
8.1.17	0.008	0.000	18.87
8.1.16	0.004	0.004	19.18
8.1.15	0.000	0.008	18.87
8.1.14	0.005	0.002	17.59
8.1.13	0.000	0.007	19.18
8.1.12	0.000	0.008	17.59
8.1.11	0.002	0.006	17.67
8.1.10	0.007	0.002	17.54
8.1.9	0.009	0.007	17.52
8.1.8	0.004	0.010	17.53
8.1.7	0.009	0.007	17.36
8.1.6	0.011	0.008	17.67
8.1.5	0.014	0.003	17.54
8.1.4	0.010	0.008	17.35
8.1.3	0.015	0.003	17.67
8.1.2	0.015	0.003	17.65
8.1.1	0.011	0.007	17.45
8.1.0	0.013	0.005	17.52
8.0.30	0.000	0.008	18.77
8.0.29	0.000	0.008	17.00
8.0.28	0.003	0.005	18.56
8.0.27	0.003	0.003	18.09
8.0.26	0.003	0.003	18.54
8.0.25	0.000	0.007	17.14
8.0.24	0.011	0.000	16.83
8.0.23	0.004	0.006	16.83
8.0.22	0.009	0.005	16.89
8.0.21	0.003	0.010	16.81
8.0.20	0.011	0.005	16.78
8.0.19	0.009	0.007	17.01
8.0.18	0.006	0.009	16.74
8.0.17	0.015	0.000	16.88
8.0.16	0.008	0.006	16.82
8.0.15	0.009	0.005	16.72
8.0.14	0.008	0.007	16.87
8.0.13	0.009	0.006	16.85
8.0.12	0.010	0.005	16.81
8.0.11	0.014	0.002	16.76
8.0.10	0.014	0.002	16.65
8.0.9	0.015	0.001	16.68
8.0.8	0.012	0.002	16.83
8.0.7	0.012	0.003	16.74
8.0.6	0.011	0.003	16.79
8.0.5	0.012	0.003	16.86
8.0.3	0.004	0.010	16.97
8.0.2	0.011	0.004	16.94
8.0.1	0.007	0.008	16.81
7.4.33	0.000	0.005	15.55
7.4.32	0.002	0.009	16.55
7.4.30	0.010	0.006	16.72
7.4.29	0.007	0.007	16.51
7.4.28	0.014	0.003	16.54
7.4.27	0.013	0.002	16.50
7.4.26	0.012	0.002	16.38
7.4.25	0.010	0.003	16.32
7.4.24	0.007	0.007	16.61
7.4.23	0.012	0.001	16.44
7.4.22	0.010	0.004	16.45
7.4.21	0.011	0.003	16.35
7.4.20	0.009	0.005	16.46
7.4.19	0.008	0.007	16.65
7.4.18	0.010	0.003	16.53
7.4.16	0.009	0.006	16.44
7.4.15	0.014	0.000	16.44
7.4.14	0.010	0.005	16.47
7.4.13	0.014	0.000	16.35
7.4.12	0.011	0.002	16.43
7.4.11	0.007	0.007	16.46
7.4.10	0.006	0.007	16.50
7.4.9	0.009	0.005	16.46
7.4.8	0.010	0.003	16.50
7.4.7	0.006	0.006	16.44
7.4.6	0.008	0.006	16.43
7.4.5	0.009	0.006	16.30
7.4.4	0.010	0.003	16.43
7.4.3	0.008	0.005	16.40
7.4.2	0.007	0.008	16.28
7.4.1	0.009	0.005	16.33
7.4.0	0.009	0.003	16.49

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