In PHP 7.x, ereg functions are no longer supported. Based on my search on internet, ereg functions use a very limited regex flavor called POSIX ERE.

Below example shows the alternative method in preg functions

ereg functionsRecommended functions

eregi( string $pattern , string $string ) : int

$source = "My email address is ck@qsok.com";
if (ereg("email", $source)) {
  echo "the source has 'email' on the content";
}


preg_match( string $pattern , string $subject ) : int

$source = "My email address is ck@qsok.com";
if (preg("/email/", $source)) {
  echo "the source has 'email' on the content";
}


eregi( string $pattern , string $string ) : int

$source = "My email address is ck@qsok.com";
if (eregi("chun kang", $source)) {
  echo "the source has 'chun kang' on the content";
}


preg_match( string $pattern , string $subject ) : int


$source = "My email address is ck@qsok.com";
if (preg_match("/Chun Kang/i", $source)) {
  echo "the source has 'email' on the content";
}


eregi( string $pattern , string $string , array &$regs ) : int


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