Ctype Functions

ctype_graph

Check for any printable character(s) except space

Description

bool ctype_graph ( string $text )

Checks if all of the characters in the provided string, text, creates visible output.

Parameters

text: The tested string.

Return Values

Returns TRUE if every character in text is printable and actually creates visible output (no white space), FALSE otherwise.

Examples

Example #1 A ctype_graph example


<?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:

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.

Notes

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.

See Also

ctype_alnum
ctype_print
ctype_punct