chr
Description
Syntax
chr( int $codepoint ): string
Parameters
codepoint
An integer between 0 and 255.
Values outside the valid range (0..255) will be bitwise and'ed with 255, which is equivalent to the following algorithm:
while($codepoint < 0) { $codepoint += 256; } $codepoint %= 256;
Return
A single-character string containing the specified byte.
Examples
1 · codepoint · single
<? $codepoint = 97; $return = chr($codepoint); echo $return;
a
2 · codepoint · multiple
<? for($i = 0; $i <= 255; ++$i) { $ctype_print = ctype_print($i); if($ctype_print) { $return = chr($i); echo "$i: $return\n"; } }
32: 33: ! 34: " 35: # 36: $ 37: % 38: & 39: ' 40: ( 41: ) 42: * 43: + 44: , 45: - 46: . 47: / 48: 0 49: 1 50: 2 51: 3 52: 4 53: 5 54: 6 55: 7 56: 8 57: 9 58: : 59: ; 60: < 61: = 62: > 63: ? 64: @ 65: A 66: B 67: C 68: D 69: E 70: F 71: G 72: H 73: I 74: J 75: K 76: L 77: M 78: N 79: O 80: P 81: Q 82: R 83: S 84: T 85: U 86: V 87: W 88: X 89: Y 90: Z 91: [ 92: \ 93: ] 94: ^ 95: _ 96: ` 97: a 98: b 99: c 100: d 101: e 102: f 103: g 104: h 105: i 106: j 107: k 108: l 109: m 110: n 111: o 112: p 113: q 114: r 115: s 116: t 117: u 118: v 119: w 120: x 121: y 122: z 123: { 124: | 125: } 126: ~
3 · multibyte · single
<? echo chr(240) . chr(159) . chr(144) . chr(152);
🐘
4 · multibyte · multiple
<? for($i = 128; $i <= 191; ++$i) { $return = chr(240) . chr(159) . chr(144) . chr($i); echo "$i: $return\n"; }
128: 🐀 129: 🐁 130: 🐂 131: 🐃 132: 🐄 133: 🐅 134: 🐆 135: 🐇 136: 🐈 137: 🐉 138: 🐊 139: 🐋 140: 🐌 141: 🐍 142: 🐎 143: 🐏 144: 🐐 145: 🐑 146: 🐒 147: 🐓 148: 🐔 149: 🐕 150: 🐖 151: 🐗 152: 🐘 153: 🐙 154: 🐚 155: 🐛 156: 🐜 157: 🐝 158: 🐞 159: 🐟 160: 🐠 161: 🐡 162: 🐢 163: 🐣 164: 🐤 165: 🐥 166: 🐦 167: 🐧 168: 🐨 169: 🐩 170: 🐪 171: 🐫 172: 🐬 173: 🐭 174: 🐮 175: 🐯 176: 🐰 177: 🐱 178: 🐲 179: 🐳 180: 🐴 181: 🐵 182: 🐶 183: 🐷 184: 🐸 185: 🐹 186: 🐺 187: 🐻 188: 🐼 189: 🐽 190: 🐾 191: 🐿
5 · < 0
<? $codepoint = -159; $return = chr($codepoint); echo $return;
a
6 · > 255
<? $codepoint = 353; $return = chr($codepoint); echo $return;
a
7 · sprintf
<? $codepoint = 27; $return1 = chr($codepoint); $return2 = sprintf("%c", $codepoint); echo "$codepoint: $return1\n" . "$codepoint: $return2";
27: 27:
Links
String
- addcslashes
- addslashes
- bin2hex
- chop
- chunk_split
- convert_uudecode
- convert_uuencode
- count_chars
- crc32
- crypt
- echo
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- fprintf
- get_html_translation_table
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- hebrevc
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- htmlentities
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- htmlspecialchars_decode
- implode
- join
- lcfirst
- levenshtein
- localeconv
- ltrim
- md5
- md5_file
- metaphone
- nl_langinfo
- nl2br
- number_format
- ord
- parse_str
- printf
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- quoted_printable_encode
- quotemeta
- rtrim
- setlocale
- sha1
- sha1_file
- similar_text
- soundex
- sprintf
- sscanf
- str_contains
- str_decrement
- str_ends_with
- str_getcsv
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- str_ireplace
- str_pad
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- str_shuffle
- str_split
- str_starts_with
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- strcasecmp
- strchr
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- strip_tags
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- stristr
- strlen
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