intlchar_isISOControl Function in PHP

The IntlChar::isISOControl() function is used to check whether the entered value is an ISO control code character or not.

Syntax

IntlChar::isISOControl(val)

Parameters

• val − A character or integer value encoded as a UTF-8 string.

Return

The IntlChar::isISOControl() function returns TRUE if the entered value is an ISO control code character.

Example

The following is an example −

<?php
   var_dump(IntlChar::isISOControl("A"));
   echo "<br>";
   var_dump(IntlChar::isISOControl("n"));
   echo "<br>";
   var_dump(IntlChar::isISOControl("T"));
   echo "<br>";
   var_dump(IntlChar::isISOControl("1"));
?>

Output

The following is the output −

bool(false)
bool(true)
bool(false)
bool(false)