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