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PHP | IntlChar::isJavaIDStart() Function

The IntlChar::isJavaIDStart() function is an inbuilt function in PHP which is used to check whether the input character code point is permissible since the first character is a java identifier or not. It is True for characters with general category “Sc” (Currency Symbols), and “Pc” (Connecting Punctuation).

Syntax:

bool IntlChar::isJavaIDStart( $codepoint )

Parameters: This function accepts single parameter $codepoint which is mendatory. The input parameter $codepoint is a character or interger value, which is encoded as a UTF-8 string.

Return Value: Returns True, if $codepoint start with Java identifier character, otherwise return False.

Below programs illustrate the IntlChar::isJavaIDStart() function in PHP:



Program 1:

<?php
// PHP function to illustrate the
// use of IntlChar::isJavaIDStart()
     
// Input string codepoint value with
// Capital and small letter
var_dump(IntlChar::isJavaIDStart("R"));
echo "<br>";
  
// Input string codepoint value with small character
var_dump(IntlChar::isJavaIDStart("r"));
echo "<br>";
  
// Input control character codepoint value 
var_dump(IntlChar::isJavaIDStart(" "));
echo "<br>";
    
// Input string codepoint value 
var_dump(IntlChar::isJavaIDStart("Bug"));
echo "<br>";
     
// Input int codepoint value 
var_dump(IntlChar::isJavaIDStart("3 "));
echo "<br>";
   
// Input int char an identifier
// of codepoint value
var_dump(IntlChar::isJavaIDStart("u{007F}"));
echo "<br>";
    
// Input symbolic codepoint value 
var_dump(IntlChar::isJavaIDStart(" @ "));
echo "<br>";
var_dump(IntlChar::isJavaIDStart(" $ "));
echo "<br>";
   
?>

/div>

Output:

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

Program 2:

<?php
// PHP function to illustrate the
// use of IntlChar::isJavaIDPart()
   
// Declare an array with
// different codepoint value 
$arr = array("C",
             " "
             " ",
             " #",
             " ",
             "Code",
        );
     
// For loop condition to check 
// each character through function
foreach ($arr as $val) {
         
    // Check each element as code point data
    var_dump(IntlChar::isJavaIDStart($val));
    echo "<br>";
}
?>

Output:

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

Related Articles:

Reference: http://php.net/manual/en/intlchar.isjavaidstart.php



This article is attributed to GeeksforGeeks.org

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