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ctype_cntrl

ctype_cntrl

Check for control character(s)

bool **ctype_cntrl** mixed $text

Checks if all of the characters in the provided , , are control characters. Control characters are e.g. line feed, tab, escape. string``text

textThe tested string. note.ctype.parameter.integer note.ctype.parameter.non-string

Returns true if every character in is a control character from the current locale, false otherwise. ctype.result.empty-string text

Voorbeeld: A example

<?php
$strings = array('string1' => "\n\r\t", 'string2' => 'arf12');
foreach ($strings as $name => $testcase) {
    if (ctype_cntrl($testcase)) {
        echo "The string '$name' consists of all control characters.\n";
    } else {
        echo "The string '$name' does not consist of all control characters.\n";
    }
}
?>

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

ctype_print``IntlChar::iscntrl

Vorige ← ctype_alpha Volgende ctype_digit →

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