use preg_replace_callback with array
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1
I know this has been asked elsewhere, but I can't find the precise situation (and understand it!) so I'm hoping someone might be able to help with code here.
There's an array of changes to be made. Simplified it's:
$title = "Tom's wife is called Tomasina";
$change_to = array(
"Tom" => "Fred",
"wife" => "girlfriend",
);
$title = preg_replace_callback('(w+)', function( $match )use( $change_to ) {
return $array[$match[1]];
}, $title);
I'm hoping to get back "Fred's girlfriend is called Tomasina" but I'm getting all sorts of stuff back depending on how I tweak the code - none of which works!
I'm pretty certain I'm missing something blindingly obvious so I apologise if I can't see it!
Thank you!
arrays preg-replace-callback
asked Nov 23 '18 at 15:29
arathraarathra
468
add a comment |
1
I know this has been asked elsewhere, but I can't find the precise situation (and understand it!) so I'm hoping someone might be able to help with code here.
There's an array of changes to be made. Simplified it's:
$title = "Tom's wife is called Tomasina";
$change_to = array(
"Tom" => "Fred",
"wife" => "girlfriend",
);
$title = preg_replace_callback('(w+)', function( $match )use( $change_to ) {
return $array[$match[1]];
}, $title);
I'm hoping to get back "Fred's girlfriend is called Tomasina" but I'm getting all sorts of stuff back depending on how I tweak the code - none of which works!
I'm pretty certain I'm missing something blindingly obvious so I apologise if I can't see it!
Thank you!
arrays preg-replace-callback
asked Nov 23 '18 at 15:29
arathraarathra
468
add a comment |
1
1
1
I know this has been asked elsewhere, but I can't find the precise situation (and understand it!) so I'm hoping someone might be able to help with code here.
There's an array of changes to be made. Simplified it's:
$title = "Tom's wife is called Tomasina";
$change_to = array(
"Tom" => "Fred",
"wife" => "girlfriend",
);
$title = preg_replace_callback('(w+)', function( $match )use( $change_to ) {
return $array[$match[1]];
}, $title);
I'm hoping to get back "Fred's girlfriend is called Tomasina" but I'm getting all sorts of stuff back depending on how I tweak the code - none of which works!
I'm pretty certain I'm missing something blindingly obvious so I apologise if I can't see it!
Thank you!
arrays preg-replace-callback
asked Nov 23 '18 at 15:29
arathraarathra
468
I know this has been asked elsewhere, but I can't find the precise situation (and understand it!) so I'm hoping someone might be able to help with code here.
There's an array of changes to be made. Simplified it's:
$title = "Tom's wife is called Tomasina";
$change_to = array(
"Tom" => "Fred",
"wife" => "girlfriend",
);
$title = preg_replace_callback('(w+)', function( $match )use( $change_to ) {
return $array[$match[1]];
}, $title);
I'm hoping to get back "Fred's girlfriend is called Tomasina" but I'm getting all sorts of stuff back depending on how I tweak the code - none of which works!
I'm pretty certain I'm missing something blindingly obvious so I apologise if I can't see it!
Thank you!
arrays preg-replace-callback
arrays preg-replace-callback
asked Nov 23 '18 at 15:29
arathraarathra
468
asked Nov 23 '18 at 15:29
arathraarathra
468
asked Nov 23 '18 at 15:29
arathraarathra
468
asked Nov 23 '18 at 15:29
arathraarathra
468
asked Nov 23 '18 at 15:29
arathraarathra
468
468
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
1
There are several issues:
- Use
$change_toin the anonymous function, not$array
- Use regex delimiters around the pattern (e.g.
/.../,/w+/) - If there is no such an item in
$change_toreturn the match value, else, it will get removed (the check can be performed withisset($change_to[$match[0]])).
Use
$title = "Tom's wife is called Tomasina";
$change_to = array(
"Tom" => "Fred",
"wife" => "girlfriend",
);
$title = preg_replace_callback('/w+/', function( $match ) use ( $change_to ) {
return isset($change_to[$match[0]]) ? $change_to[$match[0]] : $match[0];
}, $title);
echo $title;
// => Fred's girlfriend is called Tomasina
See the PHP demo.
Also, if your string can contain any Unicode letters, use '/w+/u' regex.
answered Nov 23 '18 at 15:37
Wiktor StribiżewWiktor Stribiżew
329k16149228
LOL it's easy when you know how! Perfect - thank you!!!
– arathra
Nov 23 '18 at 15:47
Almost there now! But working through this I came across another problem - even if I add theiflag to the pattern e.g./w+/iit will not go case insensitive and in the above example an array item of"tom" => "Fred"will not be found in the original string.
– arathra
Nov 23 '18 at 19:28
@arathrawdoes not need case insensitive flag, it match both upper- and lowercase chars. Since you are just matching any sequence of 1 or more word chars, you cannot control case sensitivity through regex, you need to do that yourself. I have just googled a possible workaround. A regex approach will depend on 1) the size of$change_to, 2) If keys contain whitespaces, 3) if keys can contain special chars and can start/end with them.
– Wiktor Stribiżew
Nov 23 '18 at 19:32
Once again I have to thank you, Wiktor! I spent hours trying to find the solution, moving in the direction of changing the array first, but couldn't find the right way till you linked to array_change_key_case. Cheers!
– arathra
Nov 24 '18 at 9:31
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
There are several issues:
- Use
$change_toin the anonymous function, not$array
- Use regex delimiters around the pattern (e.g.
/.../,/w+/) - If there is no such an item in
$change_toreturn the match value, else, it will get removed (the check can be performed withisset($change_to[$match[0]])).
Use
$title = "Tom's wife is called Tomasina";
$change_to = array(
"Tom" => "Fred",
"wife" => "girlfriend",
);
$title = preg_replace_callback('/w+/', function( $match ) use ( $change_to ) {
return isset($change_to[$match[0]]) ? $change_to[$match[0]] : $match[0];
}, $title);
echo $title;
// => Fred's girlfriend is called Tomasina
See the PHP demo.
Also, if your string can contain any Unicode letters, use '/w+/u' regex.
answered Nov 23 '18 at 15:37
Wiktor StribiżewWiktor Stribiżew
329k16149228
LOL it's easy when you know how! Perfect - thank you!!!
– arathra
Nov 23 '18 at 15:47
Almost there now! But working through this I came across another problem - even if I add theiflag to the pattern e.g./w+/iit will not go case insensitive and in the above example an array item of"tom" => "Fred"will not be found in the original string.
– arathra
Nov 23 '18 at 19:28
@arathrawdoes not need case insensitive flag, it match both upper- and lowercase chars. Since you are just matching any sequence of 1 or more word chars, you cannot control case sensitivity through regex, you need to do that yourself. I have just googled a possible workaround. A regex approach will depend on 1) the size of$change_to, 2) If keys contain whitespaces, 3) if keys can contain special chars and can start/end with them.
– Wiktor Stribiżew
Nov 23 '18 at 19:32
Once again I have to thank you, Wiktor! I spent hours trying to find the solution, moving in the direction of changing the array first, but couldn't find the right way till you linked to array_change_key_case. Cheers!
– arathra
Nov 24 '18 at 9:31
add a comment |
1
There are several issues:
- Use
$change_toin the anonymous function, not$array
- Use regex delimiters around the pattern (e.g.
/.../,/w+/) - If there is no such an item in
$change_toreturn the match value, else, it will get removed (the check can be performed withisset($change_to[$match[0]])).
Use
$title = "Tom's wife is called Tomasina";
$change_to = array(
"Tom" => "Fred",
"wife" => "girlfriend",
);
$title = preg_replace_callback('/w+/', function( $match ) use ( $change_to ) {
return isset($change_to[$match[0]]) ? $change_to[$match[0]] : $match[0];
}, $title);
echo $title;
// => Fred's girlfriend is called Tomasina
See the PHP demo.
Also, if your string can contain any Unicode letters, use '/w+/u' regex.
answered Nov 23 '18 at 15:37
Wiktor StribiżewWiktor Stribiżew
329k16149228
LOL it's easy when you know how! Perfect - thank you!!!
– arathra
Nov 23 '18 at 15:47
Almost there now! But working through this I came across another problem - even if I add theiflag to the pattern e.g./w+/iit will not go case insensitive and in the above example an array item of"tom" => "Fred"will not be found in the original string.
– arathra
Nov 23 '18 at 19:28
@arathrawdoes not need case insensitive flag, it match both upper- and lowercase chars. Since you are just matching any sequence of 1 or more word chars, you cannot control case sensitivity through regex, you need to do that yourself. I have just googled a possible workaround. A regex approach will depend on 1) the size of$change_to, 2) If keys contain whitespaces, 3) if keys can contain special chars and can start/end with them.
– Wiktor Stribiżew
Nov 23 '18 at 19:32
Once again I have to thank you, Wiktor! I spent hours trying to find the solution, moving in the direction of changing the array first, but couldn't find the right way till you linked to array_change_key_case. Cheers!
– arathra
Nov 24 '18 at 9:31
add a comment |
1
1
1
There are several issues:
- Use
$change_toin the anonymous function, not$array
- Use regex delimiters around the pattern (e.g.
/.../,/w+/) - If there is no such an item in
$change_toreturn the match value, else, it will get removed (the check can be performed withisset($change_to[$match[0]])).
Use
$title = "Tom's wife is called Tomasina";
$change_to = array(
"Tom" => "Fred",
"wife" => "girlfriend",
);
$title = preg_replace_callback('/w+/', function( $match ) use ( $change_to ) {
return isset($change_to[$match[0]]) ? $change_to[$match[0]] : $match[0];
}, $title);
echo $title;
// => Fred's girlfriend is called Tomasina
See the PHP demo.
Also, if your string can contain any Unicode letters, use '/w+/u' regex.
answered Nov 23 '18 at 15:37
Wiktor StribiżewWiktor Stribiżew
329k16149228
There are several issues:
- Use
$change_toin the anonymous function, not$array
- Use regex delimiters around the pattern (e.g.
/.../,/w+/) - If there is no such an item in
$change_toreturn the match value, else, it will get removed (the check can be performed withisset($change_to[$match[0]])).
Use
$title = "Tom's wife is called Tomasina";
$change_to = array(
"Tom" => "Fred",
"wife" => "girlfriend",
);
$title = preg_replace_callback('/w+/', function( $match ) use ( $change_to ) {
return isset($change_to[$match[0]]) ? $change_to[$match[0]] : $match[0];
}, $title);
echo $title;
// => Fred's girlfriend is called Tomasina
See the PHP demo.
Also, if your string can contain any Unicode letters, use '/w+/u' regex.
answered Nov 23 '18 at 15:37
Wiktor StribiżewWiktor Stribiżew
329k16149228
answered Nov 23 '18 at 15:37
Wiktor StribiżewWiktor Stribiżew
329k16149228
answered Nov 23 '18 at 15:37
Wiktor StribiżewWiktor Stribiżew
329k16149228
answered Nov 23 '18 at 15:37
Wiktor StribiżewWiktor Stribiżew
329k16149228
329k16149228
LOL it's easy when you know how! Perfect - thank you!!!
– arathra
Nov 23 '18 at 15:47
Almost there now! But working through this I came across another problem - even if I add theiflag to the pattern e.g./w+/iit will not go case insensitive and in the above example an array item of"tom" => "Fred"will not be found in the original string.
– arathra
Nov 23 '18 at 19:28
@arathrawdoes not need case insensitive flag, it match both upper- and lowercase chars. Since you are just matching any sequence of 1 or more word chars, you cannot control case sensitivity through regex, you need to do that yourself. I have just googled a possible workaround. A regex approach will depend on 1) the size of$change_to, 2) If keys contain whitespaces, 3) if keys can contain special chars and can start/end with them.
– Wiktor Stribiżew
Nov 23 '18 at 19:32
Once again I have to thank you, Wiktor! I spent hours trying to find the solution, moving in the direction of changing the array first, but couldn't find the right way till you linked to array_change_key_case. Cheers!
– arathra
Nov 24 '18 at 9:31
add a comment |
LOL it's easy when you know how! Perfect - thank you!!!
– arathra
Nov 23 '18 at 15:47
Almost there now! But working through this I came across another problem - even if I add theiflag to the pattern e.g./w+/iit will not go case insensitive and in the above example an array item of"tom" => "Fred"will not be found in the original string.
– arathra
Nov 23 '18 at 19:28
@arathrawdoes not need case insensitive flag, it match both upper- and lowercase chars. Since you are just matching any sequence of 1 or more word chars, you cannot control case sensitivity through regex, you need to do that yourself. I have just googled a possible workaround. A regex approach will depend on 1) the size of$change_to, 2) If keys contain whitespaces, 3) if keys can contain special chars and can start/end with them.
– Wiktor Stribiżew
Nov 23 '18 at 19:32
Once again I have to thank you, Wiktor! I spent hours trying to find the solution, moving in the direction of changing the array first, but couldn't find the right way till you linked to array_change_key_case. Cheers!
– arathra
Nov 24 '18 at 9:31
LOL it's easy when you know how! Perfect - thank you!!!
– arathra
Nov 23 '18 at 15:47
LOL it's easy when you know how! Perfect - thank you!!!
– arathra
Nov 23 '18 at 15:47
Almost there now! But working through this I came across another problem - even if I add the
i flag to the pattern e.g. /w+/i it will not go case insensitive and in the above example an array item of "tom" => "Fred" will not be found in the original string.– arathra
Nov 23 '18 at 19:28
Almost there now! But working through this I came across another problem - even if I add the
i flag to the pattern e.g. /w+/i it will not go case insensitive and in the above example an array item of "tom" => "Fred" will not be found in the original string.– arathra
Nov 23 '18 at 19:28
@arathra
w does not need case insensitive flag, it match both upper- and lowercase chars. Since you are just matching any sequence of 1 or more word chars, you cannot control case sensitivity through regex, you need to do that yourself. I have just googled a possible workaround. A regex approach will depend on 1) the size of $change_to, 2) If keys contain whitespaces, 3) if keys can contain special chars and can start/end with them.– Wiktor Stribiżew
Nov 23 '18 at 19:32
@arathra
w does not need case insensitive flag, it match both upper- and lowercase chars. Since you are just matching any sequence of 1 or more word chars, you cannot control case sensitivity through regex, you need to do that yourself. I have just googled a possible workaround. A regex approach will depend on 1) the size of $change_to, 2) If keys contain whitespaces, 3) if keys can contain special chars and can start/end with them.– Wiktor Stribiżew
Nov 23 '18 at 19:32
Once again I have to thank you, Wiktor! I spent hours trying to find the solution, moving in the direction of changing the array first, but couldn't find the right way till you linked to array_change_key_case. Cheers!
– arathra
Nov 24 '18 at 9:31
Once again I have to thank you, Wiktor! I spent hours trying to find the solution, moving in the direction of changing the array first, but couldn't find the right way till you linked to array_change_key_case. Cheers!
– arathra
Nov 24 '18 at 9:31
add a comment |
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