CODEWITHSUNDEEP
phpregex
AllenBooTung
AllenBooTung

Reputation: 340

Regular Expression to match break line

I'm looking for a regular expression to delete htmlA. The border start from

<{if $data.nowPage>1}> to /div> 1 breakLine <{/if}>

htmlA

<{if $data.nowPage>1}>
<div class="pageArrow pageFirst"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=1"><span class="icon arrow-first"></span></a></div>
<div class="pageArrow pagePrev"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=<{$data.nowPage-1}>"><span class="icon arrow-left"></span></a></div>
<{/if}>

I have tried

$fullHtml = readFileData($file);
preg_match("/(<{if \\\$data\.nowPage>1}>(.*?)<\/div>)(\s)(.+?)<{\/if}>/si",$fullHtml,$htmlA);
//$fullHtml = preg_replace(...,'',$fullHtml);

but it stopped too early and why print_r($htmlA) shows 5 keys?

Array
(
    [0] => <{if $data.nowPage>1}>
        <div class="pageArrow pageFirst"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=1"><span class="icon arrow-first"></span></a></div>
        <div class="pageArrow pagePrev"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}>
    [1] => <{if $data.nowPage>1}>
        <div class="pageArrow pageFirst"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=1"><span class="icon arrow-first"></span></a></div>
    [2] => 
        <div class="pageArrow pageFirst"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=1"><span class="icon arrow-first"></span></a>
    [3] => 
    [4] => 
        <div class="pageArrow pagePrev"><a href="?<{if !empty($data.years)}>y=<{$data.years}>
)

fullHtml. line3 to line6.

<div class="pageContainer">
    <div class="pageBox">
        <{if $data.nowPage>1}>
        <div class="pageArrow pageFirst"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=1"><span class="icon arrow-first"></span></a></div>
        <div class="pageArrow pagePrev"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=<{$data.nowPage-1}>"><span class="icon arrow-left"></span></a></div>
        <{/if}>

        <{for $i=$data.nowPage-$data.pageFit to $data.totalPage}>

            <{if $data.nowPage == ($i)}>
                <div class="pageBtn active"><a href="javascript:void(0);"><{$i}></a></div>
            <{else if $i>($data.nowPage+$data.pageFit)}>
                <div class="pageMore"><span class="icon moreIcon"></span></div>
                <{break}>
            <{else if $i>0}>
                <{if $i==$data.nowPage-$data.pageFit && $i>1}>
                <div class="pageMore"><span class="icon moreIcon"></span></div>
            <{/if}>
                <div class="pageBtn"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=<{$i}>"><{$i}></a></div>
            <{else}>
            <{/if}>

        <{/for}>

        <{if $data.nowPage<$data.totalPage}>
        <div class="pageArrow pageNext"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=<{$data.nowPage+1}>"><span class="icon arrow-right"></span></a></div>
        <div class="pageArrow pageLast"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=<{$data.totalPage}>"><span class="icon arrow-last"></span></a></div>
        <{/if}>
    </div>
</div>

Thank you.

Upvotes: 1

Views: 131

Answers (3)

revo
revo

Reputation: 48711

This is your RegEx but you forgot to add a pattern to it and for this reason it stops as soon as a match is found:

(<{if \\\$data\.nowPage>1}>(.*?)<\/div>)(\s)(.+?)<\/div>\s*<{\/if}>
                                                 ^^^^^^^^^^
  • \s means any kind of whitespace

why print_r($htmlA) shows 5 keys?

preg_match function returns first value in array as whole match and other indexes hold a value captured by a capturing group. You have 4 capturing groups in your regex so it adds 4 more values in returning array which means total 5 keys.

Better approach

Regex:

~<{if \$data\.nowPage>1}>.*?</div>\s*<{/if}>~si

Live demo

PHP Code:

preg_match('~<{if \$data\.nowPage>1}>.*?</div>\s*<{/if}>~si', $str, $htmlA);

Upvotes: 1

mickmackusa
mickmackusa

Reputation: 47874

I have written a pattern for your task, given your sample input.

Pattern: ~<{if \$data\.nowPage>1}>(?:\s+<div.*?</div>)+\s+<{/if}>~

Pattern Demo including leading and trailing whitespace adjustment

Code: (Demo)

echo preg_replace('~<{if \$data\.nowPage>1}>(?:\s+<div.*?</div>)+\s+<{/if}>~','',$html);
  • match the leading if line
  • match one or more <div> lines
  • match the closing if line

Upvotes: 1

Kevin
Kevin

Reputation: 1319

Could you please try this out.

const string = `<{if $data.nowPage>1}>
<div class="pageArrow pageFirst"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=1"><span class="icon arrow-first"></span></a></div>
<div class="pageArrow pagePrev"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=<{$data.nowPage-1}>"><span class="icon arrow-left"></span></a></div>
<{/if}>`;

console.log(string.match(/^<{if \$data.nowPage>1}>\n<div.*\n*<div.*\n*<\/div>\n<{\/if}>/));

Upvotes: 0

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