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 a single parameter $codepoint which is mandatory. The input parameter $codepoint is a character or integer 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" ));
// Input string codepoint value with small character var_dump(IntlChar::isJavaIDStart( "r" ));
// Input control character codepoint value var_dump(IntlChar::isJavaIDStart( "\n" ));
// Input string codepoint value var_dump(IntlChar::isJavaIDStart( "Bug" ));
// Input int codepoint value var_dump(IntlChar::isJavaIDStart( "3 " ));
// Input int char an identifier // of codepoint value var_dump(IntlChar::isJavaIDStart( "\u{007F}" ));
// Input symbolic codepoint value var_dump(IntlChar::isJavaIDStart( " @ " ));
var_dump(IntlChar::isJavaIDStart( " $ " ));
?> |
Output:
bool(true) bool(true) bool(false) NULL NULL bool(false) NULL NULL
Program 2:
<?php // PHP function to illustrate the // use of IntlChar::isJavaIDStart() // Declare an array with // different codepoint value $arr = array ( "C" ,
" " ,
"\n" ,
" #" ,
"\t" ,
"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 ));
} ?> |
Output:
bool(true) bool(false) bool(false) NULL bool(false) NULL
Related Articles:
- IntlChar::isIDIgnorable() Function
- IntlChar::isIDStart() Function
- IntlChar::isIDPart() Function
- IntlChar::isISOControl() Function
Reference: http://php.net/manual/en/intlchar.isjavaidstart.php