Regular Expression Meta-character Wild "."
What is regular expression Wild character "."?
Explanation
In regular expression, the meta-character Wild "." or a wild character that can represent a single character.
In the pattern {o.*l} specifies a string with "o" followed by "l" with zero or more characters in between. The possible matches can be like "ol", "oshdfghdl", "odsdfl" etc.
<?php
$string = 'caaa';
if (preg_match('/^(c.*t)/', $string))
echo "Regex Pattern match";
else
echo "Regex Pattern unmatch";
?> Result :
Pattern unmatch
In the above example the pattern "^(c.*t)" specifies that the string should start with "c" with any character following and at the end with a "t".
#! C:programfilesperlbinperl
print "content-type: text/htmlnn";
$name= "first name";
if ($name =~ m/fi(.*)me/)
{print "The name format matched!";}
else
{print "The name format not matched!";} Result :
The name format matched!
In the above example's pattern ".*" represents the characters "rst na" and the rest of the characters are specified in the pattern.
In the pattern {o.*l} specifies a string with "o" followed by "l" with zero or more characters in between. The possible matches can be like "ol", "oshdfghdl", "odsdfl" etc.
PHP Example:
<?php
$string = 'caaa';
if (preg_match('/^(c.*t)/', $string))
echo "Regex Pattern match";
else
echo "Regex Pattern unmatch";
?>
Pattern unmatch
In the above example the pattern "^(c.*t)" specifies that the string should start with "c" with any character following and at the end with a "t".
Perl Example:
#! C:programfilesperlbinperl
print "content-type: text/htmlnn";
$name= "first name";
if ($name =~ m/fi(.*)me/)
{print "The name format matched!";}
else
{print "The name format not matched!";}
The name format matched!
In the above example's pattern ".*" represents the characters "rst na" and the rest of the characters are specified in the pattern.
