ctype_space
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
ctype_space — Check for whitespace character(s)
Description
bool ctype_space
( string $text
)
Parameters
-
text
-
The tested string.
Return Values
Returns TRUE if every character in text
creates some sort of white space, FALSE otherwise. Besides the
blank character this also includes tab, vertical tab, line feed,
carriage return and form feed characters.
Examples
Example #1 A ctype_space() example
<?php
$strings = array(
'string1' => "\n\r\t",
'string2' => "\narf12",
'string3' => '\n\r\t' // note the single quotes
);
foreach ($strings as $name => $testcase) {
if (ctype_space($testcase)) {
echo "The string '$name' consists of whitespace characters only.\n";
} else {
echo "The string '$name' contains non-whitespace characters.\n";
}
}
?>
The above example will output:
The string 'string1' consists of whitespace characters only.
The string 'string2' contains non-whitespace characters.
The string 'string3' contains non-whitespace characters.
Notes
Note:
If an integer between -128 and 255 inclusive is provided, it is interpreted as
the ASCII value of a single character (negative values have 256 added in order to allow
characters in the Extended ASCII range). Any other integer is interpreted as a string
containing the decimal digits of the integer.
See Also
- ctype_cntrl() - Check for control character(s)
- ctype_graph() - Check for any printable character(s) except space
- ctype_punct() - Check for any printable character which is not whitespace or an
alphanumeric character