Replace More Than 1 Instance with PHP

Say I have

sometext-somemore--test---test2

how could I have it replace all instaces where there are more than 1 - and have it replace them with just 1 so it would look like this

sometext-somemor开发者_运维问答e-test-test2

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Use preg_replace.

preg_replace('/-+/', '-', $mystr);

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use a regex: s/-+/-/ The + says 'one or more of the preceding character'.

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You could do this with a regular expression and the preg_replace function :

$str = 'sometext-somemore--test---test2';
echo preg_replace('/-+/', '-', $str);

would give you :

sometext-somemore-test-test2

The pattern I used here : -+

• Matches a -
• One or more than one time : +
  • See Repetition in the PCRE manual, about this.

And don't hesitate to read the PCRE Patterns section of the manual, if you are interested by regular expressions ;-)

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Use this:

echo preg_replace("/-+/","-","sometext-somemore--test---test2");
//prints sometext-somemore-test-test2

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for($i=0; $i < strlen($text) - 1; $i++){ if($text[$i] == $text[$i+1]){ $text = str_replace($i.$i, $i, $text); } }

Nowhere near as efficient as using str_replace() by itself for each character you think might be duplicated, but it will work..

If all you want is to replace two dashes with one:

$text = str_replace("--", "-", $text);