ctype_graph
PHP function
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(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
Check for any printable character(s) except space
Description
ctype_graph(mixed $text): bool
Checks if all of the characters in the provided string, text, creates visible output.
Parameters
textThe tested string. Integer Non-string
Return Values
Returns true if every character in text is printable and actually creates visible output (no white space), false otherwise. Empty-string
Examples
A ctype_graph() example
php
<?php
$strings = array('string1' => "asdf\n\r\t", 'string2' => 'arf12', 'string3' => 'LKA#@%.54');
foreach ($strings as $name => $testcase) {
if (ctype_graph($testcase)) {
echo "The string '$name' consists of all (visibly) printable characters.\n";
} else {
echo "The string '$name' does not consist of all (visibly) printable characters.\n";
}
}
?>The above example will output:
output
The string 'string1' does not consist of all (visibly) printable characters.
The string 'string2' consists of all (visibly) printable characters.
The string 'string3' consists of all (visibly) printable characters.