IntlChar::isJavaIDStart() function in PHP

The IntlChar::isJavaIDStart() function is used to check whether the entered character is permissible since the first character is a java identifier or not.

Syntax

IntlChar::isJavaIDStart(val)

Parameters

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

Return

The IntlChar::isJavaIDStart() function returns TRUE if the val begins withJava identifier character.

Example

The following is an example −

<?php
   var_dump(IntlChar::isJavaIDStart("A"));
   echo "<br>";
   var_dump(IntlChar::isJavaIDStart("a"));
   echo "<br>";
?>

Output

The following is the output −

bool(true)
bool(true)

Example

Let us see another example −

<?php
   var_dump(IntlChar::isJavaIDStart("111"));
   echo "<br>";
   var_dump(IntlChar::isJavaIDStart("K"));
   echo "<br>";
   var_dump(IntlChar::isJavaIDStart("Kite"));
   echo "<br>";
   var_dump(IntlChar::isJavaIDStart("123 "));
   echo "<br>";
?>

Output

The following is the output −

NULL
bool(true)
NULL
NULL