Regular Expressions

[Android]

OK, i'm not very familiar with regular expressions but i have a feeling this is a simple problem. I just need someone to enlighten me.<br>
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I need to replace the # character inside a string with another string. Easy enough.. i just use "#" as my pattern to match and give the string to replace it...<br>
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but what i also want to do is not replace the # character if it is preceded by a backslash... and also not display the backslash... so, lets say that i'm replacing the "#" with "123".<br>
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"blah#blah" should become "blah123blah"<br>
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but "foo\#bar" should be "foo#bar" (without the backslash showing)<br>
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any ideas?<br>
<br>

 

[Guest_imported]

Give a sample ereg to extract a URL or email from a string. <br><br>$file_array = file($fileName);<br>for ($i=0; $i&lt;count($file_array); $i++){<br>&nbsp;&nbsp;ereg( ?? );<br>}<br><br><br>where any line of text may contain a valid URL or email.<br>

 

[bandi]

Hi<br><br>I've an other question: how can I specify that the wildcards not to be so hungry.<br><br>ereg(&quot;(.*)X&quot;,&quot;abXcdX&quot;,$regs);<br>$regs[1] will be: &quot;abXcd&quot;, but I would need &quot;ab&quot;<br><br>Thanks in advance!