Syntax:int preg_match ($pattern, $string, $pattern_array, $flags, $offset)
Return value:returns true if the template exists, otherwise - false.
Example 1:This example takes a URL without
http: //and returns the full URL.
/ / Function to add http function addHttp ( $url ) { // Search by pattern if (! preg_match ( "~ ^ (?: f | ht) tps?: // ~ i " , $url )) { // If doesn’t exist then add http $url = " http: // " . $url ; } // Return URL return $url ; }
// Declare a variable and initialize
// this is with a URL $url = " engineerforengineer.org " ;
// Show URL echo $url ; echo "" ;
// Display URL with http echo addHttp ( $url );
?> Exit:engineerforengineer.org http://engineerforengineer.org
Example 2: Inthis example takes the URL from http: //and returns without any fixes . // Function to add http function addHttp ( $url ) { // Search by pattern if (! preg_match ( " ~ ^ (? : f | ht) tps?: // ~ i " , $url )) { // If doesn’t exist then add http $url = " http: // " . $url ; } // Return URL return $url ; }
// Declare a variable and initialize
// this is with a URL $url = " http://engineerforengineer.org " ;
// Show URL echo $url ; echo "" ;
// Display URL with http echo addHttp ( $url );
?> Exit:http: / /engineerforengineer.org http://engineerforengineer.org
Method 2:This method uses the parse_url() functionto add http: // if it does not exist in the URL. < tbody>
// Declare a variable and initialize
// this is with a URL $url = "engineerforengineer.org" ;
// Show URL echo $url ; echo "" ;
// Using the parse_url() function // to parse URL $parsed = parse_url ( $url );
// Check if the parsed URL is empty
// then add http if ( empty ( $parsed [ ’scheme’ ])) { $url = ’ http: // ’ . ltrim ( $url , ’/’ ); }
// Display the URL echo $url ;
?> Exit:engineerforengineer.org http://engineerforengineer.org
Method 3:This method uses the strpos()function to add http: // if it doesn’t exist in URL.
// Declare a variable and
// initialize this $url = "engineerforengineer.org" ;
// Display the URL echo $url ; echo "" ;
// Check http: // exists in the URL
// or not, if it doesn’t exist, add it if ( strpos ( $url , ’ http: // ’ )! == 0) { $url = ’ http : // ’ . $url ; }
// Display the URL echo $url ;
?> Exit:engineerforengineer.org http://engineerforengineer.org
Method 4:This method uses the parse_url() functionto add http: // to the URL if it is not exists.
// Declare a variable and
// initialize this $url = "engineerforengineer.org" ;
// Display the URL echo $url ; echo "" ;
// Function for adding http to URL function addHttp ( $url , $scheme = ’ http: // ’ ) { return parse_url ( $url , PHP_URL_SCHEME) === null? $scheme . $url : $url ; }
// Display URL echo addHttp ( $url );
?> Exit:engineerforengineer.org http://engineerforengineer.org
