PHP | IntlChar::isblank() Function
The IntlChar::isblank() function is an inbuilt function in PHP which is used to determine the given input code data is blank or horizontal space character and the character visible separates words on a line.
If the input contains U+0009 (TAB) and characters “Zs” (space separators) except Zero Width Space (ZWSP, U+200B) then it will be True.
A Unicode White_Space character except “vertical space controls” character is true where vertical space controls contain following characters: U+000A (LF) U+000B (VT) U+000C (FF) U+000D (CR) U+0085 (NEL) U+2028 (LS) U+2029 (PS).
Syntax:
bool IntlChar::isblank ( $codepoint )
Parameter: This function accepts a single parameter as mentioned above and described below:
- $codepoint: The input parameter $codepoint is an integer values or character, which is encoded as a UTF-8 string. The function returns a boolean value after the compilation of function.
Return Value: If $codepoint is a blank space or horizontal space character then returns TRUE, otherwise returns FALSE. Examples:
Input : $codepoint = "G" Output :bool(false) // Character becomes False Input : $codepoint = " " Output : bool(true) // Space becomes TRUE Input : $codepoint = "Beginner" Output : NULL // String becomes NULL
Below programs illustrate the IntlChar::isblank() function in PHP:
Program 1:
php
<?php // PHP code to illustrate the // IntlChar::isblank() function. // input alphabet character var_dump(IntlChar::isblank("X")); // Plus operator var_dump(IntlChar::isblank("+")); // Space character var_dump(IntlChar::isblank(" ")); // % sign operator var_dump(IntlChar::isblank("%")); // tab character var_dump(IntlChar::isblank("\t")); // new line character var_dump(IntlChar::isblank("\n")); ?> |
Output:
bool(false) bool(false) bool(true) bool(false) bool(true) bool(false)
Program 2:
php
<?php // PHP code to illustrate the // IntlChar::isblank() function. // input alphabet character var_dump(IntlChar::isblank( 'X' )); // Plus operator var_dump(IntlChar::isblank( '+' )); // Space character var_dump(IntlChar::isblank( ' ' )); // % sign operator var_dump(IntlChar::isblank( '%' )); // tab character var_dump(IntlChar::isblank( '\t' )); // new line character var_dump(IntlChar::isblank( '\n' )); ?> |
Output:
bool(false) bool(false) bool(true) bool(false) NULL NULL
Program 3: If function input is string or number, then it will print NULL.
php
<?php // PHP code to illustrate the // IntlChar::isblank() function. // In case of input string var_dump(IntlChar::isblank("w3wiki is Computer Portal")); // In case of number input var_dump(IntlChar::isblank("2018")); ?> |
Output:
NULL NULL
Reference: http://php.net/manual/en/intlchar.isblank.php
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