string - Adding characters to str_replace in PHP -

-

i have php file thread ($tid) , post ($pid) ids defined , i'm looking use str_replace combine them , create desired output (below) &p= added:

desired output: 

$tid&p=$pid

the closest i've got doing this:

$tid=$t1; $pid=$p1; $tid=str_replace("$tid","$tid"."$pid",$tid);

the result is: 

$tid$pid

i may need use function (not sure if so?) in str_replace support &p= being added, trying add in quotes directly doesn't seem work resulting in database errors.

edit #1: tried doing following based on comments far:

$tid=""; $tid.="$t1"; $tid.="$p1";  $tid=$tid;

that results in same previous example above: 

$tid$pid

as add &p= database error:

$tid.="&p=";

so question how add &p= edit #1 example above correctly?

i'm attempting understand question little bit. have couple options alluded in comments above. could, instance (where '1', '2', , '3' replaced desired values):

<?php $tid=1; $pid=2; $amp=3; $tid=str_replace("$tid","$tid".'$amp;p='."$pid",$tid);  echo $tid; ?>

here can explicitly state in 'replace' argument of str_replace missing string should part of replacement string.

or use concatenation operator generate string desire simpler given (little) know of surrounding code/use-case:

<?php $tid=1; $pid=2; $amp=3;  echo "$tid".'$amp;p='."$pid"; ?>

the reason i'd recommend latter, due fact it's less resource intensive produce desired result appears string. str_replace() searches "haystack" or subject string using search string , must replace each of found instances replace string.


Comments

Post a Comment

Popular posts from this blog

C++: Boost interprocess memory mapped file error -

-
i'm trying create memory mapped file using this answer, i'm getting compile errors. code: namespace bi = boost::interprocess; std::string vecfile = "vector.dat"; bi::managed_mapped_file file_vec(bi::open_or_create,vecfile.c_str(), sizeof(struct rectangle) * data_size); typedef bi::allocator<struct rectangle, bi::managed_mapped_file::segment_manager> rect_alloc; typedef std::vector<struct rectangle, rect_alloc> myvec; myvec * vecptr = file_vec.find_or_construct<myvec>("myvector")(file_vec.get_segment_manager()); vecptr->push_back(random_rectangle); the struct this: struct rectangle{ rectangle(float *minarr, float *maxarr, int arr, int exp, int id){ this->arrival = arr; this->expiry = exp; this->id = id; for(int i=0; < 2; i++){ min[i] = minarr[i]; max[i] = maxarr[i]; } int arrival, expiry, id; float min[2]; float max[2]; } the error is: compiler not deduce template argu...
Read more

python - IO.UnsupportedOperation: Not Writable -

-
i have made program stores score attached name in .txt file. however, want print alphabetical order of name attached score. when run program come error io.unsupportedoperation: not writable here code: file = open(class_name , 'r') #opens file in 'append' mode don't delete information name = (name) file.write(str(name + " : " )) #writes information file file.write(str(score)) file.write('\n') linelist = file.readlines() line in sorted(linelist): print(line.rstrip()); file.close() you have opened file read only, attempted write it. file left open, attempt read it, if in append mode, file pointer @ end of file. try instead: class_name = "class.txt" name = "joe" score = 1.5 file = open(class_name , 'a') #opens file in 'append' mode don't delete information name = (n...
Read more

python - malformed header from script index.py Bad header -

-
i want run python code in apache2(ubuntu 14.04) server. have followed these steps , getting error: step 1: configuration 1: have created directory , file under /var/www/cgi-bin configuration 2 : have edited /etc/apache2/sites-available/000-default.conf alias /cgi-bin /var/www/cgi-bin <directory "/var/www/cgi-bin"> options indexes followsymlinks execcgi addhandler cgi-script .cgi .py allow </directory> <directory /var/www/cgi-bin> options </directory> step 2: and python script is: index.py #!/usr/bin/env python import cgi; import cgitb;cgitb.enable() print "content-type: text/plain\n" print "<b>hello python</b>" step 3: when ran through chrome browser using: url : http://localhost/cgi-bin/index.py step 4: i getting error in error-log malformed header script 'index.py': bad header: hello python you should end header \r\n, must print out yet \r\n signal body coming. (i...
Read more