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PHP Function ctype_graph()
Syntax
Definition and Usage
This function checks if all of the characters in the provided string, text, creates visible output.
Paramters
Parameter | Description |
text | Required. The tested string. |
Return Value
Returns TRUE if every character in text is printable and actually creates visible output (no white space), FALSE otherwise.
Example
Try out following example:
<?php
$strings = array('asdf\n\r\t', 'arf12', 'LKA#@%.54');
foreach ($strings as $testcase) {
if (ctype_graph($testcase)) {
echo "$testcase consists of all
(visibly) printable characters<br />";
} else {
echo "$testcase does not have all
(visibly) printable characters.<br />";
}
}
?>
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This will produce following result:
asdf\n\r\t does not have all (visibly) printable characters.
arf12 consists of all (visibly) printable characters
LKA#@%.54 consists of all (visibly) printable characters
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