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Example #1 Regular Expression Examples
<?php
// Returns true if "abc" is found anywhere in $string.
ereg ( "abc" , $string );
// Returns true if "abc" is found at the beginning of $string.
ereg ( "^abc" , $string );
// Returns true if "abc" is found at the end of $string.
ereg ( "abc$" , $string );
// Returns true if client browser is Netscape 2, 3 or MSIE 3.
eregi ( "(ozilla.[23]|MSIE.3)" , $_SERVER [ "HTTP_USER_AGENT" ]);
// Places three space separated words into $regs[1], $regs[2] and $regs[3].
ereg ( "([[:alnum:]]+) ([[:alnum:]]+) ([[:alnum:]]+)" , $string , $regs );
// Put a <br /> tag at the beginning of $string.
$string = ereg_replace ( "^" , "<br />" , $string );
// Put a <br /> tag at the end of $string.
$string = ereg_replace ( "$" , "<br />" , $string );
// Get rid of any newline characters in $string.
$string = ereg_replace ( "\n" , "" , $string );
?>