ctype_cntrl
(PHP 4 >= 4.0.4, PHP 5)
ctype_cntrl -- Check for control character(s)
Popis
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, escape.
Návratové hodnoty
Returns TRUE if every character in text is
a control character from the current locale, FALSE otherwise.
Příklady
Příklad 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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Výše uvedený příklad vypíše: The string 'string1' consists of all control characters.
The string 'string2' does not consist of all control characters. |
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