ctype_cntrl
(PHP 4 >= 4.0.4, PHP 5)
ctype_cntrl -- Check for control character(s)
Opis
bool
ctype_cntrl ( string text )
Checks if all of the characters in the provided string,
text, are control characters.
Control characters are e.g. line feed, tab, esc.
Zwracane wartości
Returns TRUE if every character in text is
a letter from the current locale, FALSE otherwise.
Przykłady
Przykład 1. A ctype_cntrl() 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";
}
}
?>
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Powyższy przykład wyświetli: The string 'string1' consists of all control characters.
The string 'string2' does not consists of all control characters. |
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