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PHP Find And Replace Multiple Line Using preg_replace() - Fix line break problem
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| <?php | |
| $subject = ' | |
| Lorem Ipsum 1 | |
| Lorem Ipsum 1.1 | |
| Lorem Ipsum 2 | |
| Lorem Ipsum 2.1 | |
| Lorem Ipsum 2.1.1 | |
| Lorem Ipsum 3 | |
| Lorem Ipsum 3.1 | |
| Lorem Ipsum 4 | |
| Lorem Ipsum 4.1 | |
| Lorem Ipsum 5 | |
| Lorem Ipsum 5.1 | |
| '; | |
| $find = ' Lorem Ipsum 2 | |
| Lorem Ipsum 2.1 | |
| Lorem Ipsum 2.1.1'; | |
| $replace = 'some new text ... '; | |
| // We need replace all new line with \n | |
| // @see https://www.npopov.com/2011/12/10/PCRE-and-newlines.html | |
| $subject = preg_replace( "/(*BSR_ANYCRLF)\R/", PHP_EOL, $subject ); | |
| $find = preg_replace( "/(*BSR_ANYCRLF)\R/", PHP_EOL, $find ); | |
| // Convert $find to Regex Pattern | |
| // note: 'm' means search in multi line. | |
| $pattern = sprintf( '/(%s)/m', preg_quote( $find, '/' ) ); | |
| // Replace String | |
| $limit = -1; // -1 means replace all, change number if you want to limit the number of replacment. | |
| $subject = preg_replace( $pattern, $replace, $subject, $limit, $count ); | |
| echo $subject; | |
| // @return | |
| /* | |
| Lorem Ipsum 1 | |
| Lorem Ipsum 1.1 | |
| some new text ... | |
| Lorem Ipsum 3 | |
| Lorem Ipsum 3.1 | |
| Lorem Ipsum 4 | |
| Lorem Ipsum 4.1 | |
| Lorem Ipsum 5 | |
| Lorem Ipsum 5.1 | |
| */ |
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