Check for any printable character(s) except space
Syntax
ctype_graph ( mixed $text ) : bool
Parameters
text
The tested string.
Note: If an integer between -128 and 255 inclusive is provided, it is interpreted as the ASCII value of a single character (negative values have 256 added in order to allow characters in the Extended ASCII range). Any other integer is interpreted as a string containing the decimal digits of the integer.
Return
Returns TRUE if every character in text is printable and actually creates visible output (no white space), FALSE otherwise.
Examples
1
<? $text = "!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~"; $return = ctype_graph($text); var_export($return); ?>
true
2
<? for($i = 0; $i <= 255; ++$i) { $return = ctype_graph($i); if($return) { $character = chr($i); echo "$i: $character\n"; } } ?>
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: ~