match multiple line using regular expression and modify these matched lines using regexp and PHP
I want to match multiple lines based on regular expression. Suppose I have the following string:
#include<math.h>
#include<stdio.h>
int main()
I want to replace #include<math.h> with <span class="header">#include<math.h> </span> and #include<stdio.h> with <span class="header">#include<stdio.h></span>. The final filtered string will looks like:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
int main()
At first I am trying to match my target word to reformat as follows:
/#include<[^>]+>/m
But this only select first line and the following is working for multiple lines:
/#include<[^>]+>/gm
Now I am trying to prepare these matched lines as follows:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
code:
<?php
$input = '#include<math.h>
#include<stdio.h>
int main()';
$input = preg_replace('/(#include<[^>]+>)/gm','<span class="header">$0</span>',$input);
echo $input;
?>
This codes gives an error and came to know 'g' is not supported by php. This simple task kills my day. Any help will be appreciated.
php regex
edited Nov 26 '18 at 3:03
mickmackusa
23.4k103658
asked Nov 26 '18 at 2:03
Abdus Sattar BhuiyanAbdus Sattar Bhuiyan
1,60821539
add a comment |
I want to match multiple lines based on regular expression. Suppose I have the following string:
#include<math.h>
#include<stdio.h>
int main()
I want to replace #include<math.h> with <span class="header">#include<math.h> </span> and #include<stdio.h> with <span class="header">#include<stdio.h></span>. The final filtered string will looks like:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
int main()
At first I am trying to match my target word to reformat as follows:
/#include<[^>]+>/m
But this only select first line and the following is working for multiple lines:
/#include<[^>]+>/gm
Now I am trying to prepare these matched lines as follows:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
code:
<?php
$input = '#include<math.h>
#include<stdio.h>
int main()';
$input = preg_replace('/(#include<[^>]+>)/gm','<span class="header">$0</span>',$input);
echo $input;
?>
This codes gives an error and came to know 'g' is not supported by php. This simple task kills my day. Any help will be appreciated.
php regex
edited Nov 26 '18 at 3:03
mickmackusa
23.4k103658
asked Nov 26 '18 at 2:03
Abdus Sattar BhuiyanAbdus Sattar Bhuiyan
1,60821539
Usepreg_match_allorpreg_replace_callbackinstead of making it multiline.
– mario
Nov 26 '18 at 2:07
2
Possible duplicate of How to add additional tag to a specific word using regular expression and php. This question seems incredibly similar to your previous question, please explain how this one's different, and why you feel justified in asking a new question.
– Davіd
Nov 26 '18 at 2:39
add a comment |
I want to match multiple lines based on regular expression. Suppose I have the following string:
#include<math.h>
#include<stdio.h>
int main()
I want to replace #include<math.h> with <span class="header">#include<math.h> </span> and #include<stdio.h> with <span class="header">#include<stdio.h></span>. The final filtered string will looks like:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
int main()
At first I am trying to match my target word to reformat as follows:
/#include<[^>]+>/m
But this only select first line and the following is working for multiple lines:
/#include<[^>]+>/gm
Now I am trying to prepare these matched lines as follows:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
code:
<?php
$input = '#include<math.h>
#include<stdio.h>
int main()';
$input = preg_replace('/(#include<[^>]+>)/gm','<span class="header">$0</span>',$input);
echo $input;
?>
This codes gives an error and came to know 'g' is not supported by php. This simple task kills my day. Any help will be appreciated.
php regex
edited Nov 26 '18 at 3:03
mickmackusa
23.4k103658
asked Nov 26 '18 at 2:03
Abdus Sattar BhuiyanAbdus Sattar Bhuiyan
1,60821539
I want to match multiple lines based on regular expression. Suppose I have the following string:
#include<math.h>
#include<stdio.h>
int main()
I want to replace #include<math.h> with <span class="header">#include<math.h> </span> and #include<stdio.h> with <span class="header">#include<stdio.h></span>. The final filtered string will looks like:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
int main()
At first I am trying to match my target word to reformat as follows:
/#include<[^>]+>/m
But this only select first line and the following is working for multiple lines:
/#include<[^>]+>/gm
Now I am trying to prepare these matched lines as follows:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
code:
<?php
$input = '#include<math.h>
#include<stdio.h>
int main()';
$input = preg_replace('/(#include<[^>]+>)/gm','<span class="header">$0</span>',$input);
echo $input;
?>
This codes gives an error and came to know 'g' is not supported by php. This simple task kills my day. Any help will be appreciated.
php regex
php regex
edited Nov 26 '18 at 3:03
mickmackusa
23.4k103658
asked Nov 26 '18 at 2:03
Abdus Sattar BhuiyanAbdus Sattar Bhuiyan
1,60821539
edited Nov 26 '18 at 3:03
mickmackusa
23.4k103658
asked Nov 26 '18 at 2:03
Abdus Sattar BhuiyanAbdus Sattar Bhuiyan
1,60821539
edited Nov 26 '18 at 3:03
mickmackusa
23.4k103658
edited Nov 26 '18 at 3:03
mickmackusa
23.4k103658
edited Nov 26 '18 at 3:03
mickmackusa
23.4k103658
23.4k103658
asked Nov 26 '18 at 2:03
Abdus Sattar BhuiyanAbdus Sattar Bhuiyan
1,60821539
asked Nov 26 '18 at 2:03
Abdus Sattar BhuiyanAbdus Sattar Bhuiyan
1,60821539
asked Nov 26 '18 at 2:03
Abdus Sattar BhuiyanAbdus Sattar Bhuiyan
1,60821539
1,60821539
Usepreg_match_allorpreg_replace_callbackinstead of making it multiline.
– mario
Nov 26 '18 at 2:07
2
Possible duplicate of How to add additional tag to a specific word using regular expression and php. This question seems incredibly similar to your previous question, please explain how this one's different, and why you feel justified in asking a new question.
– Davіd
Nov 26 '18 at 2:39
add a comment |
Usepreg_match_allorpreg_replace_callbackinstead of making it multiline.
– mario
Nov 26 '18 at 2:07
2
Possible duplicate of How to add additional tag to a specific word using regular expression and php. This question seems incredibly similar to your previous question, please explain how this one's different, and why you feel justified in asking a new question.
– Davіd
Nov 26 '18 at 2:39
Use
preg_match_all or preg_replace_callback instead of making it multiline.– mario
Nov 26 '18 at 2:07
Use
preg_match_all or preg_replace_callback instead of making it multiline.– mario
Nov 26 '18 at 2:07
2
2
Possible duplicate of How to add additional tag to a specific word using regular expression and php. This question seems incredibly similar to your previous question, please explain how this one's different, and why you feel justified in asking a new question.
– Davіd
Nov 26 '18 at 2:39
Possible duplicate of How to add additional tag to a specific word using regular expression and php. This question seems incredibly similar to your previous question, please explain how this one's different, and why you feel justified in asking a new question.
– Davіd
Nov 26 '18 at 2:39
add a comment |
1 Answer
1
active
oldest
votes
Here's a PHP solution to your problem:
$str = <<<EOF
#include<math.h>
#include<stdio.h>
int main()
EOF;
$str = preg_replace('/(#include<[^>]+>)/', '<span class="header">$1</span>', $str);
echo $str;
This outputs:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
int main()
3v41.org demo
preg_replace will match all occurrences, instead of just the first. However, if you only want to match occurences, instead of replace them, you'll need to use preg_match_all instead of preg_match, because PHP doesn't support the /g flag and instead has the preg_match_all function for this.
For RegExr, you need to add the global g flag to capture multiple matches, instead of just the first.
Your final regex should look like this:
/#include<[^>]+>/gm
RegExr demo
answered Nov 26 '18 at 2:04
DavіdDavіd
3,66841836
1
The/gflag only works in JavaScript.
– mario
Nov 26 '18 at 2:07
@David. Thanks for your time. How to make this two lines as: <span class="header">#include<math.h></span> <span class="header">#include<stdio.h></span> in php?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:12
@AbdusSattarBhuiyan You should probably update your question with specific details about the PHP solution you've tried, and why it's not working, because right now your question is about your regex not working in RegExr.
– Davіd
Nov 26 '18 at 2:15
@Davіd: Update done. Would you recheck please?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:39
1
@AbdusSattarBhuiyan Please see updated answer, you shouldn't put the/gflag in the PHPpreg_replacefunction. Also, PHP capture groups start from$1, not$0.
– Davіd
Nov 26 '18 at 2:40
add a comment |
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1 Answer
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1 Answer
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oldest
votes
Here's a PHP solution to your problem:
$str = <<<EOF
#include<math.h>
#include<stdio.h>
int main()
EOF;
$str = preg_replace('/(#include<[^>]+>)/', '<span class="header">$1</span>', $str);
echo $str;
This outputs:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
int main()
3v41.org demo
preg_replace will match all occurrences, instead of just the first. However, if you only want to match occurences, instead of replace them, you'll need to use preg_match_all instead of preg_match, because PHP doesn't support the /g flag and instead has the preg_match_all function for this.
For RegExr, you need to add the global g flag to capture multiple matches, instead of just the first.
Your final regex should look like this:
/#include<[^>]+>/gm
RegExr demo
answered Nov 26 '18 at 2:04
DavіdDavіd
3,66841836
1
The/gflag only works in JavaScript.
– mario
Nov 26 '18 at 2:07
@David. Thanks for your time. How to make this two lines as: <span class="header">#include<math.h></span> <span class="header">#include<stdio.h></span> in php?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:12
@AbdusSattarBhuiyan You should probably update your question with specific details about the PHP solution you've tried, and why it's not working, because right now your question is about your regex not working in RegExr.
– Davіd
Nov 26 '18 at 2:15
@Davіd: Update done. Would you recheck please?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:39
1
@AbdusSattarBhuiyan Please see updated answer, you shouldn't put the/gflag in the PHPpreg_replacefunction. Also, PHP capture groups start from$1, not$0.
– Davіd
Nov 26 '18 at 2:40
add a comment |
Here's a PHP solution to your problem:
$str = <<<EOF
#include<math.h>
#include<stdio.h>
int main()
EOF;
$str = preg_replace('/(#include<[^>]+>)/', '<span class="header">$1</span>', $str);
echo $str;
This outputs:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
int main()
3v41.org demo
preg_replace will match all occurrences, instead of just the first. However, if you only want to match occurences, instead of replace them, you'll need to use preg_match_all instead of preg_match, because PHP doesn't support the /g flag and instead has the preg_match_all function for this.
For RegExr, you need to add the global g flag to capture multiple matches, instead of just the first.
Your final regex should look like this:
/#include<[^>]+>/gm
RegExr demo
answered Nov 26 '18 at 2:04
DavіdDavіd
3,66841836
1
The/gflag only works in JavaScript.
– mario
Nov 26 '18 at 2:07
@David. Thanks for your time. How to make this two lines as: <span class="header">#include<math.h></span> <span class="header">#include<stdio.h></span> in php?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:12
@AbdusSattarBhuiyan You should probably update your question with specific details about the PHP solution you've tried, and why it's not working, because right now your question is about your regex not working in RegExr.
– Davіd
Nov 26 '18 at 2:15
@Davіd: Update done. Would you recheck please?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:39
1
@AbdusSattarBhuiyan Please see updated answer, you shouldn't put the/gflag in the PHPpreg_replacefunction. Also, PHP capture groups start from$1, not$0.
– Davіd
Nov 26 '18 at 2:40
add a comment |
Here's a PHP solution to your problem:
$str = <<<EOF
#include<math.h>
#include<stdio.h>
int main()
EOF;
$str = preg_replace('/(#include<[^>]+>)/', '<span class="header">$1</span>', $str);
echo $str;
This outputs:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
int main()
3v41.org demo
preg_replace will match all occurrences, instead of just the first. However, if you only want to match occurences, instead of replace them, you'll need to use preg_match_all instead of preg_match, because PHP doesn't support the /g flag and instead has the preg_match_all function for this.
For RegExr, you need to add the global g flag to capture multiple matches, instead of just the first.
Your final regex should look like this:
/#include<[^>]+>/gm
RegExr demo
answered Nov 26 '18 at 2:04
DavіdDavіd
3,66841836
Here's a PHP solution to your problem:
$str = <<<EOF
#include<math.h>
#include<stdio.h>
int main()
EOF;
$str = preg_replace('/(#include<[^>]+>)/', '<span class="header">$1</span>', $str);
echo $str;
This outputs:
<span class="header">#include<math.h></span>
<span class="header">#include<stdio.h></span>
int main()
3v41.org demo
preg_replace will match all occurrences, instead of just the first. However, if you only want to match occurences, instead of replace them, you'll need to use preg_match_all instead of preg_match, because PHP doesn't support the /g flag and instead has the preg_match_all function for this.
For RegExr, you need to add the global g flag to capture multiple matches, instead of just the first.
Your final regex should look like this:
/#include<[^>]+>/gm
RegExr demo
answered Nov 26 '18 at 2:04
DavіdDavіd
3,66841836
edited Nov 26 '18 at 3:16
answered Nov 26 '18 at 2:04
DavіdDavіd
3,66841836
answered Nov 26 '18 at 2:04
DavіdDavіd
3,66841836
answered Nov 26 '18 at 2:04
DavіdDavіd
3,66841836
3,66841836
1
The/gflag only works in JavaScript.
– mario
Nov 26 '18 at 2:07
@David. Thanks for your time. How to make this two lines as: <span class="header">#include<math.h></span> <span class="header">#include<stdio.h></span> in php?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:12
@AbdusSattarBhuiyan You should probably update your question with specific details about the PHP solution you've tried, and why it's not working, because right now your question is about your regex not working in RegExr.
– Davіd
Nov 26 '18 at 2:15
@Davіd: Update done. Would you recheck please?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:39
1
@AbdusSattarBhuiyan Please see updated answer, you shouldn't put the/gflag in the PHPpreg_replacefunction. Also, PHP capture groups start from$1, not$0.
– Davіd
Nov 26 '18 at 2:40
add a comment |
1
The/gflag only works in JavaScript.
– mario
Nov 26 '18 at 2:07
@David. Thanks for your time. How to make this two lines as: <span class="header">#include<math.h></span> <span class="header">#include<stdio.h></span> in php?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:12
@AbdusSattarBhuiyan You should probably update your question with specific details about the PHP solution you've tried, and why it's not working, because right now your question is about your regex not working in RegExr.
– Davіd
Nov 26 '18 at 2:15
@Davіd: Update done. Would you recheck please?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:39
1
@AbdusSattarBhuiyan Please see updated answer, you shouldn't put the/gflag in the PHPpreg_replacefunction. Also, PHP capture groups start from$1, not$0.
– Davіd
Nov 26 '18 at 2:40
1
1
The
/g flag only works in JavaScript.– mario
Nov 26 '18 at 2:07
The
/g flag only works in JavaScript.– mario
Nov 26 '18 at 2:07
@David. Thanks for your time. How to make this two lines as: <span class="header">#include<math.h></span> <span class="header">#include<stdio.h></span> in php?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:12
@David. Thanks for your time. How to make this two lines as: <span class="header">#include<math.h></span> <span class="header">#include<stdio.h></span> in php?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:12
@AbdusSattarBhuiyan You should probably update your question with specific details about the PHP solution you've tried, and why it's not working, because right now your question is about your regex not working in RegExr.
– Davіd
Nov 26 '18 at 2:15
@AbdusSattarBhuiyan You should probably update your question with specific details about the PHP solution you've tried, and why it's not working, because right now your question is about your regex not working in RegExr.
– Davіd
Nov 26 '18 at 2:15
@Davіd: Update done. Would you recheck please?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:39
@Davіd: Update done. Would you recheck please?
– Abdus Sattar Bhuiyan
Nov 26 '18 at 2:39
1
1
@AbdusSattarBhuiyan Please see updated answer, you shouldn't put the
/g flag in the PHP preg_replace function. Also, PHP capture groups start from $1, not $0.– Davіd
Nov 26 '18 at 2:40
@AbdusSattarBhuiyan Please see updated answer, you shouldn't put the
/g flag in the PHP preg_replace function. Also, PHP capture groups start from $1, not $0.– Davіd
Nov 26 '18 at 2:40
add a comment |
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Use
preg_match_allorpreg_replace_callbackinstead of making it multiline.– mario
Nov 26 '18 at 2:07
2
Possible duplicate of How to add additional tag to a specific word using regular expression and php. This question seems incredibly similar to your previous question, please explain how this one's different, and why you feel justified in asking a new question.
– Davіd
Nov 26 '18 at 2:39