Abnormal PHP string length and when searching Elasticsearch using PHP
I got abnormal PHP string from Elasticsearch.
step 1: php curl to invoke elastic search to get result $value,
step 2: php $value2 = strip_tags($value); // to remove all html tags
step 3: var_dump($value2)
step 4: echo 'len='.mb_strlen($value2);
step 5: echo 'substr='.mb_substr($value2);
step 3 Output is:
string(974) " Ginger Never believe diet can help with cancer, but nice
try. 2018-01-22 11:20:21 Gland Totally no snacks? there must be some
snacks on the list, right... 2018-01-22 10:25:32 Reloated Article: How
to Treat Bladder Cancer with Diet?"
step 4 output is:
len=974
step 5 output is:
Empty string
Problem:
- The total number of chars is about 231. Obviously less than 974.
mb_strlen($value2) = 974, when replacemb_strlenwithstrlen, get the same 974- when invoke
php mb_substr($value2), return empty string. use substr, get the same empty string.
What is the reason and how to fix it?
Thanks.
php string
elasticsearch substr strlen edited Nov 23 at 10:42
Grokify
7,23822237
asked Nov 23 at 9:41
steven sun
111
add a comment |
I got abnormal PHP string from Elasticsearch.
step 1: php curl to invoke elastic search to get result $value,
step 2: php $value2 = strip_tags($value); // to remove all html tags
step 3: var_dump($value2)
step 4: echo 'len='.mb_strlen($value2);
step 5: echo 'substr='.mb_substr($value2);
step 3 Output is:
string(974) " Ginger Never believe diet can help with cancer, but nice
try. 2018-01-22 11:20:21 Gland Totally no snacks? there must be some
snacks on the list, right... 2018-01-22 10:25:32 Reloated Article: How
to Treat Bladder Cancer with Diet?"
step 4 output is:
len=974
step 5 output is:
Empty string
Problem:
- The total number of chars is about 231. Obviously less than 974.
mb_strlen($value2) = 974, when replacemb_strlenwithstrlen, get the same 974- when invoke
php mb_substr($value2), return empty string. use substr, get the same empty string.
What is the reason and how to fix it?
Thanks.
php string
elasticsearch substr strlen edited Nov 23 at 10:42
Grokify
7,23822237
asked Nov 23 at 9:41
steven sun
111
I think it may convert some of the characters to ASCII. Trystrlen(utf8_decode($value2));ormb_strlen($value2, 'UTF-8');It must be some encoding issue.
– WKoppel
Nov 23 at 10:00
add a comment |
I got abnormal PHP string from Elasticsearch.
step 1: php curl to invoke elastic search to get result $value,
step 2: php $value2 = strip_tags($value); // to remove all html tags
step 3: var_dump($value2)
step 4: echo 'len='.mb_strlen($value2);
step 5: echo 'substr='.mb_substr($value2);
step 3 Output is:
string(974) " Ginger Never believe diet can help with cancer, but nice
try. 2018-01-22 11:20:21 Gland Totally no snacks? there must be some
snacks on the list, right... 2018-01-22 10:25:32 Reloated Article: How
to Treat Bladder Cancer with Diet?"
step 4 output is:
len=974
step 5 output is:
Empty string
Problem:
- The total number of chars is about 231. Obviously less than 974.
mb_strlen($value2) = 974, when replacemb_strlenwithstrlen, get the same 974- when invoke
php mb_substr($value2), return empty string. use substr, get the same empty string.
What is the reason and how to fix it?
Thanks.
php string
elasticsearch substr strlen edited Nov 23 at 10:42
Grokify
7,23822237
asked Nov 23 at 9:41
steven sun
111
I got abnormal PHP string from Elasticsearch.
step 1: php curl to invoke elastic search to get result $value,
step 2: php $value2 = strip_tags($value); // to remove all html tags
step 3: var_dump($value2)
step 4: echo 'len='.mb_strlen($value2);
step 5: echo 'substr='.mb_substr($value2);
step 3 Output is:
string(974) " Ginger Never believe diet can help with cancer, but nice
try. 2018-01-22 11:20:21 Gland Totally no snacks? there must be some
snacks on the list, right... 2018-01-22 10:25:32 Reloated Article: How
to Treat Bladder Cancer with Diet?"
step 4 output is:
len=974
step 5 output is:
Empty string
Problem:
- The total number of chars is about 231. Obviously less than 974.
mb_strlen($value2) = 974, when replacemb_strlenwithstrlen, get the same 974- when invoke
php mb_substr($value2), return empty string. use substr, get the same empty string.
What is the reason and how to fix it?
Thanks.
php string
elasticsearch substr strlen php string
elasticsearch substr strlen edited Nov 23 at 10:42
Grokify
7,23822237
asked Nov 23 at 9:41
steven sun
111
edited Nov 23 at 10:42
Grokify
7,23822237
asked Nov 23 at 9:41
steven sun
111
edited Nov 23 at 10:42
Grokify
7,23822237
edited Nov 23 at 10:42
Grokify
7,23822237
edited Nov 23 at 10:42
Grokify
7,23822237
7,23822237
asked Nov 23 at 9:41
steven sun
111
asked Nov 23 at 9:41
steven sun
111
asked Nov 23 at 9:41
steven sun
111
111
I think it may convert some of the characters to ASCII. Trystrlen(utf8_decode($value2));ormb_strlen($value2, 'UTF-8');It must be some encoding issue.
– WKoppel
Nov 23 at 10:00
add a comment |
I think it may convert some of the characters to ASCII. Trystrlen(utf8_decode($value2));ormb_strlen($value2, 'UTF-8');It must be some encoding issue.
– WKoppel
Nov 23 at 10:00
I think it may convert some of the characters to ASCII. Try
strlen(utf8_decode($value2)); or mb_strlen($value2, 'UTF-8'); It must be some encoding issue.– WKoppel
Nov 23 at 10:00
I think it may convert some of the characters to ASCII. Try
strlen(utf8_decode($value2)); or mb_strlen($value2, 'UTF-8'); It must be some encoding issue.– WKoppel
Nov 23 at 10:00
add a comment |
1 Answer
1
active
oldest
votes
Sorry, I fix it.
The real text of string contains lots of space char, and they are not rendered in browser. Remove them and everything is OK.
answered Nov 23 at 10:09
steven sun
111
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Sorry, I fix it.
The real text of string contains lots of space char, and they are not rendered in browser. Remove them and everything is OK.
answered Nov 23 at 10:09
steven sun
111
add a comment |
Sorry, I fix it.
The real text of string contains lots of space char, and they are not rendered in browser. Remove them and everything is OK.
answered Nov 23 at 10:09
steven sun
111
add a comment |
Sorry, I fix it.
The real text of string contains lots of space char, and they are not rendered in browser. Remove them and everything is OK.
answered Nov 23 at 10:09
steven sun
111
Sorry, I fix it.
The real text of string contains lots of space char, and they are not rendered in browser. Remove them and everything is OK.
answered Nov 23 at 10:09
steven sun
111
answered Nov 23 at 10:09
steven sun
111
answered Nov 23 at 10:09
steven sun
111
answered Nov 23 at 10:09
steven sun
111
111
add a comment |
add a comment |
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I think it may convert some of the characters to ASCII. Try
strlen(utf8_decode($value2));ormb_strlen($value2, 'UTF-8');It must be some encoding issue.– WKoppel
Nov 23 at 10:00