ctype_print
(PHP 4 >= 4.0.4, PHP 5)
ctype_print -- Check for printable character(s)
Description
bool
ctype_print ( string text)
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.
例子 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";
}
}
?>
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This 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. |
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See also ctype_cntrl(), ctype_graph(),
and ctype_punct().