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 PHP manuál : function.ctype-print.html

ctype_print
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ctype_print

(PHP 4 >= 4.0.4, PHP 5)

ctype_print -- Check 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()
ctype_graph()
ctype_punct()

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