Online PHP editor | perf for ObKdY

<?php echo 'Trim blank character' . "\n"; var_dump(trim('   f   ')); echo "\n\nTrim blank character via chrs function \n"; var_dump(trim_blank_chrs('   f   ')); echo "\n\nTrim normal space \n"; var_dump(trim(' f ')); /** * More robust version of PHP's trim() function. It includes a list of UTF-8 blank characters * from http://kb.mozillazine.org/Network.IDN.blacklist_chars * * @param string $string The string to trim from * @param string $charlist Optional. The stripped characters can also be specified using the charlist parameter * @return string The trimmed string */ function trim_blank_chrs($string, $charlist="") { $hex_chrs = array( 0x09 => 1, // \x{0009} 0x0A => 1, // \x{000A} 0x0B => 1, // \x{000B} 0x0D => 1, // \x{000D} 0x20 => 1, // \x{0020} 0xC2 => array(0x81 => 1, 0x8D => 1, 0x90 => 1, 0x9D => 1, 0xA0 => 1, 0xAD => 1), // \x{0081}, \x{008D}, \x{0090}, \x{009D}, \x{00A0}, \x{00AD} 0xCC => array(0xB7 => 1, 0xB8 => 1), // \x{0337}, \x{0338} 0xE1 => array(0x85 => array(0x9F => 1, 0xA0 => 1), 0x9A => array(0x80 => 1), 0xA0 => array(0x8E => 1)), // \x{115F}, \x{1160}, \x{1680}, \x{180E} 0xE2 => array(0x80 => array(0x80 => 1, 0x81 => 1, 0x82 => 1, 0x83 => 1, 0x84 => 1, 0x85 => 1, 0x86 => 1, 0x87 => 1, 0x88 => 1, 0x89 => 1, 0x8A => 1, 0x8B => 1, 0x8C => 1, 0x8D => 1, 0x8E => 1, 0x8F => 1, // \x{2000} - \x{200F} 0xA8 => 1, 0xA9 => 1, 0xAA => 1, 0xAB => 1, 0xAC => 1, 0xAD => 1, 0xAE => 1, 0xAF => 1), // \x{2028} - \x{202F} 0x81 => array(0x9F => 1)), // \x{205F} 0xE3 => array(0x80 => array(0x80 => 1), // \x{3000} 0x85 => array(0xA4 => 1)), // \x{3164} 0xEF => array(0xBB => array(0xBF => 1), // \x{FEFF} 0xBE => array(0xA0 => 1), // \x{FFA0} 0xBF => array(0xB9 => 1, 0xBA => 1, 0xBB => 1)), // \x{FFF9} - \x{FFFB} ); $hex_chrs_rev = array( 0x09 => 1, // \x{0009} 0x0A => 1, // \x{000A} 0x0B => 1, // \x{000B} 0x0D => 1, // \x{000D} 0x20 => 1, // \x{0020} 0x81 => array(0xC2 => 1, 0x80 => array(0xE2 => 1)), // \x{0081}, \x{2001} 0x8D => array(0xC2 => 1, 0x80 => array(0xE2 => 1)), // \x{008D}, \x{200D} 0x90 => array(0xC2 => 1), // \x{0090} 0x9D => array(0xC2 => 1), // \x{009D} 0xA0 => array(0xC2 => 1, 0x85 => array(0xE1 => 1), 0x81 => array(0xE2 => 1), 0xBE => array(0xEF => 1)), // \x{00A0}, \x{1160}, \x{2060}, \x{FFA0} 0xAD => array(0xC2 => 1, 0x80 => array(0xE2 => 1)), // \x{00AD}, \x{202D} 0xB8 => array(0xCC => 1), // \x{0338} 0xB7 => array(0xCC => 1), // \x{0337} 0x9F => array(0x85 => array(0xE1 => 1), 0x81 => array(0xE2 => 1)), // \x{115F}, \x{205F} 0x80 => array(0x9A => array(0xE1 => 1), 0x80 => array(0xE2 => 1, 0xE3 => 1)), // \x{1680}, \x{2000}, \x{3000} 0x8E => array(0xA0 => array(0xE1 => 1), 0x80 => array(0xE2 => 1)), // \x{180E}, \x{200E} 0x82 => array(0x80 => array(0xE2 => 1)), // \x{2002} 0x83 => array(0x80 => array(0xE2 => 1)), // \x{2003} 0x84 => array(0x80 => array(0xE2 => 1)), // \x{2004} 0x85 => array(0x80 => array(0xE2 => 1)), // \x{2005} 0x86 => array(0x80 => array(0xE2 => 1)), // \x{2006} 0x87 => array(0x80 => array(0xE2 => 1)), // \x{2007} 0x88 => array(0x80 => array(0xE2 => 1)), // \x{2008} 0x89 => array(0x80 => array(0xE2 => 1)), // \x{2009} 0x8A => array(0x80 => array(0xE2 => 1)), // \x{200A} 0x8B => array(0x80 => array(0xE2 => 1)), // \x{200B} 0x8C => array(0x80 => array(0xE2 => 1)), // \x{200C} 0x8F => array(0x80 => array(0xE2 => 1)), // \x{200F} 0xA8 => array(0x80 => array(0xE2 => 1)), // \x{2028} 0xA9 => array(0x80 => array(0xE2 => 1)), // \x{2029} 0xAA => array(0x80 => array(0xE2 => 1)), // \x{202A} 0xAB => array(0x80 => array(0xE2 => 1)), // \x{202B} 0xAC => array(0x80 => array(0xE2 => 1)), // \x{202C} 0xAE => array(0x80 => array(0xE2 => 1)), // \x{202E} 0xAF => array(0x80 => array(0xE2 => 1)), // \x{202F} 0xA4 => array(0x85 => array(0xE3 => 1)), // \x{3164} 0xBF => array(0xBB => array(0xEF => 1)), // \x{FEFF} 0xB9 => array(0xBF => array(0xEF => 1)), // \x{FFF9} 0xBA => array(0xBF => array(0xEF => 1)), // \x{FFFA} 0xBB => array(0xBF => array(0xEF => 1)), // \x{FFFB} ); // Start from the beginning and work our way in $i = 0; do { // Check to see if we have matched a first character in our utf-8 array $offset = match_sequence($string, $hex_chrs); if(!$offset) { // If not, then we must have a "good" character and we don't need to do anymore processing break; } $string = substr($string, $offset); } while(++$i); // Start from the end and work our way in $string = strrev($string); $i = 0; do { // Check to see if we have matched a first character in our utf-8 array $offset = match_sequence($string, $hex_chrs_rev); if(!$offset) { // If not, then we must have a "good" character and we don't need to do anymore processing break; } $string = substr($string, $offset); } while(++$i); $string = strrev($string); if($charlist) { $string = trim($string, $charlist); } else { $string = trim($string); } return $string; } /** * Match a sequence * * @param string $string The string to match from * @param array $array The array to match from * @param int $i Number in the string * @param int $n Number of matches * @return int The number matched */ function match_sequence($string, $array, $i=0, $n=0) { if($string === "") { return 0; } $ord = ord($string[$i]); if(array_key_exists($ord, $array)) { $level = $array[$ord]; ++$n; if(is_array($level)) { ++$i; return match_sequence($string, $level, $i, $n); } return $n; } return 0; }

Version	System time (s)	User time (s)	Memory (MiB)
8.5.1	0.006	0.016	19.19
8.5.0	0.015	0.007	23.10
8.4.15	0.002	0.001	14.05
8.4.14	0.014	0.007	17.46
8.4.13	0.010	0.012	17.89
8.4.12	0.009	0.012	20.63
8.4.11	0.014	0.007	22.54
8.4.10	0.013	0.008	17.68
8.4.9	0.009	0.010	17.74
8.4.8	0.006	0.003	17.90
8.4.7	0.011	0.010	17.98
8.4.6	0.011	0.010	17.67
8.4.5	0.012	0.009	17.70
8.4.4	0.010	0.010	20.56
8.4.3	0.012	0.006	22.11
8.4.2	0.005	0.005	17.59
8.4.1	0.013	0.006	22.15
8.3.28	0.013	0.008	18.28
8.3.27	0.012	0.009	16.54
8.3.26	0.011	0.009	16.45
8.3.25	0.007	0.006	19.06
8.3.24	0.005	0.003	16.70
8.3.23	0.012	0.007	16.74
8.3.22	0.010	0.009	19.21
8.3.21	0.009	0.009	16.86
8.3.20	0.005	0.003	17.04
8.3.19	0.008	0.012	16.67
8.3.18	0.009	0.010	16.57
8.3.17	0.015	0.003	18.72
8.3.16	0.006	0.003	18.92
8.3.15	0.015	0.003	16.71
8.3.14	0.004	0.004	19.03
8.3.13	0.008	0.000	18.30
8.3.12	0.008	0.008	20.88
8.3.11	0.009	0.000	16.85
8.3.10	0.003	0.005	18.55
8.3.9	0.003	0.006	26.77
8.3.8	0.006	0.003	18.31
8.3.7	0.013	0.006	17.00
8.3.6	0.009	0.006	16.50
8.3.5	0.009	0.009	18.53
8.3.4	0.009	0.009	20.34
8.3.3	0.000	0.014	20.51
8.3.2	0.006	0.003	24.18
8.3.1	0.005	0.002	24.66
8.3.0	0.007	0.000	26.16
8.2.29	0.013	0.006	20.84
8.2.28	0.009	0.010	16.70
8.2.27	0.016	0.003	19.03
8.2.26	0.011	0.004	18.21
8.2.25	0.004	0.004	17.40
8.2.24	0.000	0.008	18.76
8.2.23	0.009	0.000	20.94
8.2.22	0.003	0.006	24.06
8.2.21	0.013	0.003	26.77
8.2.20	0.003	0.006	16.75
8.2.19	0.004	0.011	16.63
8.2.18	0.018	0.000	16.75
8.2.17	0.006	0.009	19.02
8.2.16	0.011	0.004	22.96
8.2.15	0.004	0.004	25.66
8.2.14	0.004	0.004	24.66
8.2.13	0.006	0.003	26.16
8.2.12	0.000	0.008	19.23
8.2.11	0.003	0.007	22.13
8.2.10	0.006	0.003	20.53
8.2.6	0.005	0.004	18.02
8.1.33	0.010	0.009	16.63
8.1.32	0.010	0.011	18.23
8.1.31	0.011	0.007	18.39
8.1.30	0.004	0.004	22.10
8.1.29	0.009	0.000	30.84
8.1.28	0.012	0.009	25.92
8.1.27	0.008	0.000	24.66
8.1.26	0.005	0.003	26.35
8.1.25	0.008	0.000	28.09
8.1.24	0.003	0.006	19.07
8.1.23	0.000	0.011	18.88