is_string
]Podporované v PHP 4, PHP 5 Syntax
bool is_string ( mixed $var )
Popis
Príkaz jazyka PHP
Finds whether the type given variable is string.
Parameters
var - The variable being evaluated.
Return Values
Returns TRUE if var is of type string, FALSE otherwise.
Príklad
<?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)
*/
?>
Pozri aj
is_float, is_int, is_bool, is_object, is_array
]