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PHP Manual


(PHP 4, PHP 5)

implodeJoin array elements with a string


string implode ( string $glue , array $pieces )
string implode ( array $pieces )

Join array elements with a glue string.


implode() can, for historical reasons, accept its parameters in either order. For consistency with explode(), however, it may be less confusing to use the documented order of arguments.



Defaults to an empty string. This is not the preferred usage of implode() as glue would be the second parameter and thus, the bad prototype would be used.


The array of strings to implode.

Return Values

Returns a string containing a string representation of all the array elements in the same order, with the glue string between each element.


Version Description
4.3.0 The glue parameter became optional.


Example #1 implode() example


= array('lastname''email''phone');
$comma_separated implode(","$array);

$comma_separated// lastname,email,phone

// Empty string when using an empty array:
var_dump(implode('hello', array())); // string(0) ""



Note: This function is binary-safe.

See Also

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