ctype_print

(PHP 4 >= 4.0.4, PHP 5)

ctype_print — Check for printable character(s)

Descrierea

bool ctype_print ( string $text )

Checks if all of the characters in the provided string, text, are printable.

Parametri

text: The tested string.

Valorile întoarse

Returns TRUE if every character in text will actually create output (including blanks). Returns FALSE if text contains control characters or characters that do not have any output or control function at all.

Exemple

Example #1 A ctype_print() example


<?php
$strings = array('string1' => "asdf\n\r\t", 'string2' => 'arf12', 'string3' => 'LKA#@%.54');
foreach ($strings as $name => $testcase) {
    if (ctype_print($testcase)) {
        echo "The string '$name' consists of all printable characters.\n";
    } else {
        echo "The string '$name' does not consist of all printable characters.\n";
    }
}
?>

Exemplul de mai sus va afișa:

The string 'string1' does not consist of all printable characters.
The string 'string2' consists of all printable characters.
The string 'string3' consists of all printable characters.

Note

Notă:
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.

Vedeți de asemenea

ctype_cntrl() - Check for control character(s)
ctype_graph() - Check for any printable character(s) except space
ctype_punct() - Check for any printable character which is not whitespace or an alphanumeric character

add a note User Contributed Notes ctype_print

flatline at greyhat dot nl 03-Mar-2004 09:58


It seems that this function does not recognize characters such as '�', '�', '�', '�' as printable.





Depends on your locale settings, in the default "C" locale they are


indeed not printable as it is 7bit ASCII based. (hartmut)

add a note