Tag Archives: ascii

Number Pad (NumLock On) ASCII ALT Key Character Codes

Just a quick reference list for numeric pad key sequences for typing ASCII characters not found on the keyboard.

All you have to do is turn NumLock on, hold the ALT key, type the desired number, then let go of the ALT key. Have fun 😀

ASCII Codes
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
§
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
! # $ % & ( ) * + , . / 0
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
1 2 3 4 5 6 7 8 9 : ; < = > ? @
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
A B C D E F G H I J K L M N O P
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96
Q R S T U V W X Y Z [ \ ] ^ _ `
97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112
a b c d e f g h i j k l m n o p
113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128
q r s t u v w x y z { | } ~ Ç
129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
ü é â ä à å ç ê ë è ï î ì Ä Å É
145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160
æ Æ ô ö ò û ù ÿ Ö Ü ¢ £ ¥ ƒ á
161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176
í ó ú ñ Ñ ª º ¿ ¬ ½ ¼ ¡ « »
177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192
193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208
209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224
α
225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240
ß Γ π Σ σ µ τ Φ Θ Ω δ φ ε
241 242 243 244 245 246 247 248 249 250 251 252 253 254 255
± ÷ ° · ²
02222 0169 0153
® ©

Convert extended ASCII in a string using PHP strtr instead of Normalizer or iconv

I am working on a CodeIgniter project that has information stored in the database with extended ascii characters (128-255) and UTF-8 encoding. As most of you know, CodeIgniter is fairly strict on what is allowed in a url (they only allow what SHOULD be permitted per RFC 1738 ;)). Furthermore sunce you can create basically any character by allowing a percent sign (%) in the URL, alowing that was not a viable option for me.

For instance you cannot use “ñ” (n with a tilde) in the URL parameters. Replacing it with “n” for the database query will however return a valid match. Problem solved! I can just use Normalizer or iconv, right?

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