Rory Browne wrote:
You mite try this. I know that this work with perl.
mites byte.
=~ m/^[0-9][A-Z][a-z]{2-3} \.[0-9]+$/
I'm not sure what the initial m does(I'm not a perl person), but the
rest of the regex matches as follows.
A string whose first character is a digit between 0 and 9. This is
followed by an Upper case letter, and then two or three lower case
letters. All that is followed by a period(or dot), after which may be
er?
a single-digit number, but nothing else.
It matches the following:
1Abc.2
1Abcd.2
1Abc.
1Abcd.
try this and see if that is correct:
php -r '
$a = array(
"gnaglreg1Abc.2ewfergwrgbt","1Abc.2","1Abcd.2","1Abc.","1Abcd.","1Abcd
.2","1Abcd .2",
"1Abcd.22","1Abcd .22","1Abcd .22","1Abcd.232");
foreach ($a as $s) {
echo "\ntrying:\t\t\"$s\":\n--\n";
echo preg_replace("/^[0-9][A-Z][a-z]{2-3} \.[0-9]+$/", "..!!GOTCHA1!!..",
$s),"\n";
echo preg_replace("/^[0-9][A-Z][a-z]{2,3} \.[0-9]+$/", "..!!GOTCHA2!!..",
$s),"\n";
echo preg_replace("/^[0-9][A-Z][a-z]{2,3} \.[0-9]?$/", "..!!GOTCHA3!!..",
$s),"\n";
echo preg_replace("/^[0-9][A-Z][a-z]{2,3}\.[0-9]+$/", "..!!GOTCHA4!!..",
$s),"\n";
echo preg_replace("/^[0-9][A-Z][a-z]{2,3}\.[0-9]?$/", "..!!GOTCHA5!!..",
$s),"\n";
echo preg_replace("/^[0-9][A-Z][a-z]{2,3}[ ]?\.[0-9]+$/", "..!!GOTCHA6!!..",
$s),"\n";
echo preg_replace("/^[0-9][A-Z][a-z]{2,3}[ ]{1,}\.[0-9]+$/", "..!!GOTCHA7!!..",
$s),"\n";
echo preg_replace("/^[0-9][A-Z][a-z]{2,3}[ ]?\.[0-9]?$/", "..!!GOTCHA8!!..",
$s),"\n";
echo preg_replace("/^[0-9][A-Z][a-z]{2,3}[ ]{1,}\.[0-9]?$/", "..!!GOTCHA9!!..",
$s),"\n";
echo "---\n";
}
'
I'm still very new to this. But I'm trying to help.
run the above code, examine the output (if you are going to do it in a browser
echo out
some <pre> tags). hopefully the 9 variations will give you a little bit of
insight.
read every page here: http://nl2.php.net/manual/en/ref.pcre.php - its a good
primer on regexp.
don't worry if you don't understand half of it. often things become
clear as you continue to read/experiment :-)
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