PHP 5.4.31 Released

ctype_print

(PHP 4 >= 4.0.4, PHP 5)

ctype_printCheck for printable character(s)

Description

bool ctype_print ( string $text )

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

Parameters

text

The tested string.

Return Values

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.

Examples

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";
    }
}
?>

The above example will output:

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.

See Also

  • ctype_cntrl() - Check for control character(s)
  • ctype_graph() - بررسی برای کاراکترهای قابل پرینت به جز فاصله
  • ctype_punct() - Check for any printable character which is not whitespace or an alphanumeric character

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User Contributed Notes 1 note

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1
Anonymous
2 years ago
Only ascii 32 thru 126 (inclusive) are considered printable. Tab (ascii 7), carriage return (ascii 13), linefeed (ascii 10) etc may produce output but are not considered printable.
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