ctype_punct to check punctuation character

bool ctype_punct ( string $input_string )
$input_string : String to be checked.

ctype_punct() is a PHP filter function checks if only punctuation characters present in the $input_string ( nither letter, digit or blank space ). Any thing other than this if present then it returns FALSE.

Output is TRUE of all punctuation character(s) only present. ( nither letter, digit or blank space )
$str = array("#$)s", "$@!&)(", "2*;^@",38);
foreach ($str as $val) {
if (ctype_punct($val)) {
echo "<p class='text-success'>The string <b>$val</b> consists of all punctuation character(s).</p>";
} else {
echo "<p class='text-danger'>The string <b>$val</b> does not consist of all punctuation character(s)</p>";
}
}
Output is here

The string #$)s does not consist of all punctuation character(s)

The string $@!&)( consists of all punctuation character(s).

The string 2*;^@ does not consist of all punctuation character(s)

The string 38 consists of all punctuation character(s).


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