PHP Manual: Check for whitespace character(s)

Description

bool ctype_space ( string $text )

Checks if all of the characters in the provided string, text, creates whitespace.

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.

ctype_space

Description

Parameters

Return Values

Examples

Notes

See Also