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August 29, 2015 13:56
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RegEx to convert all relative URLs in an HTML block to absolute URLs
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| <?php | |
| $content = preg_replace('/(href|src)="((?!(.+:\/\/)|(.+:)|\/).*)"/','\1="/\2"',$content); | |
| # Raw regex: (href|src)="(?!(.+://)|(.+:)|/).*" |
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Uses negative look-arounds to exclude URLs beginning with http://, https://, mailto:, and /