Question

How to use ctype_space() function to check if all characters in a string are whitespace in PHP

Answer 1

$arr = array("13.5\n", "abcXYZ", "AbCd1fgH7", "\n\r\t", '\n', "*$!()[]");
     
foreach ($arr as $s) 
{
    if (ctype_space($s)) 
        echo "$s is all whitespace characters <br />";
    else
        echo "$s is NOT all whitespace characters <br />";
}
     
/*
run:
   
13.5 is NOT all whitespace characters
abcXYZ is NOT all whitespace characters
AbCd1fgH7 is NOT all whitespace characters
is all whitespace characters
\n is NOT all whitespace characters
*$!()[] is NOT all whitespace characters 
      
*/
 

 

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