{"id":268,"date":"2016-07-28T13:27:14","date_gmt":"2016-07-28T13:27:14","guid":{"rendered":"https:\/\/barkhane.com\/php\/2016\/07\/28\/create-function-in-php-user-defined-function-udf\/"},"modified":"2024-03-03T15:01:10","modified_gmt":"2024-03-03T15:01:10","slug":"create-function-in-php-user-defined-function-udf","status":"publish","type":"post","link":"https:\/\/barkhane.com\/php\/create-function-in-php-user-defined-function-udf\/","title":{"rendered":"Create function in php | User Defined Function (UDF)"},"content":{"rendered":"<h2>What is User Defined Function (UDF) in PHP?<\/h2>\n<p>function in php : A UDF or <strong>User Defined Function<\/strong> in <a href=\"https:\/\/barkhane.com\/php\/what-is-php\/\" target=\"_blank\" rel=\"noopener\">PHP <\/a>can act as a procedure (void function) . A UDF must be declared with key word \\&#8217;function\\&#8217; ,we can return statement or values if required .<\/p>\n<p>To UnderstandUser Defined Function in <a href=\"https:\/\/barkhane.com\/php\/what-is-php\/\" target=\"_blank\" rel=\"noopener\">PHP<\/a>\u00a0UDF \u00a0lets take an example<\/p>\n<pre><code> \n&lt;?php\n\nfunction \u00a0sayhi()\n\n{\necho \\\"Hi!\\\";\necho \\\"Hello\\\";\n\n}\nsayhi();\n\n?&gt;\n\n&lt;?php\n\nfunction \u00a0addnum($x,$y)\n\n{\nreturn ($x+$y);\n\n}\nsayhi();\n\naddnum(2,3);\n\n\/\/\/output will be 5\n\n?&gt;\n    <\/code><\/pre>\n<p>Above are the two\u00a0example of\u00a0<strong>User Defined Function<\/strong> UDF in <a href=\"https:\/\/barkhane.com\/php\/what-is-php\/\" target=\"_blank\" rel=\"noopener\">PHP<\/a>\u00a0\u00a0in first example output returns statement while\u00a0in other integer value.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is User Defined Function (UDF) in PHP? function in php : A UDF or User Defined Function in PHP 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