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Website Programming in PHP / MYSQL
is_string
(PHP 4, PHP 5)
is_string — Find whether the type of a variable is string
Parameters
- var
-
The variable being evaluated.
Return Values
Returns TRUE if var is of type string, FALSE otherwise.
Examples
Example #1 is_string() example
<?php
if (is_string("23")) {
echo "is string\n";
} else {
echo "is not an string\n";
}
var_dump(is_string('abc'));
var_dump(is_string("23"));
var_dump(is_string(23.5));
var_dump(is_string(true));
?>
The above example will output:
is string bool(true) bool(true) bool(false) bool(false)
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