preg_grepPHP ManualPrevNextpreg_greppreg_grep -- Return array entries that match the patternDescriptionarray preg_grep(string pattern, array input); preg_grep() returns the array consisting of the elements of the input array that match the given pattern. Example 1. preg_grep() example 1  2 preg_grep("/^(\d+)?\.\d+$/", $array); // find all floating point numbers in the array 3  Note: This function was added in PHP 4.0.PrevHomeNextpreg_quoteUpPattern Modifiers