Extract email address from string using php regular expression_PHP tutorial

Sometimes we have professional tools to collect content with email addresses on web pages on websites and extract the email addresses in the content. Let’s take a look at an example for reference if necessary.

[PHP]Code

The code is as follows

代码如下

复制代码

function extract_emails($str){      // This regular expression extracts all emails from a string:      $regexp = '/([a-z0-9_.-])+@(([a-z0-9-])+.)+([a-z0-9]{2,4})+/i';      preg_match_all($regexp, $str, $m);        return isset($m[0]) ? $m[0] : array();  }    $test_string = 'This is a test string...            test1@example.org            Test different formats:          test2@example.org;          foobar                      strange formats:          test5@example.org          test6[at]example.org          test7@example.net.org.com          test8@ example.org          test9@!foo!.org            foobar ';   print_r(extract_emails($test_string));

Copy code

function extract_emails($str){

// This regular expression extracts all emails from a string:

$regexp = '/([a-z0-9_.-])+@(([a-z0-9-])+.)+([a-z0-9]{2,4}) +/i'; preg_match_all($regexp, $str, $m); return isset($m[0]) ? $m[0] : array(); }

$test_string = 'This is a test string...

test1@example.org Test different formats: test2@example.org;                                                                                                                                           strange formats: test5@example.org test6[at]example.org test7@example.net.org.com test8@example.org test9@!foo!.org foobar '; print_r(extract_emails($test_string)); http://www.bkjia.com/PHPjc/631676.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/631676.htmlTechArticleSometimes we have professional tools to collect content with email addresses on the web pages of the website, and add the email address in the content The address is extracted. Let’s look at an example below. Please refer to it if necessary...