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 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// PHP function to illustrate the// use of IntlChar::isJavaIDStart() // Input string codepoint value with// Capital and small lettervar_dump(IntlChar::isJavaIDStart("R"));// Input string codepoint value with small charactervar_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 valuevar_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// PHP function to illustrate the// use of IntlChar::isJavaIDStart() // Declare an array with// different codepoint value $arr = array("C", " ", "\n", " #", "\t", "Code", ); // For loop condition to check // each character through functionforeach ($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
