Warning A non-numeric value encountered

Question

Recently updated to PHP 7 1 and start getting following error     Warning  A non-numeric value encountered in on line 29   Here is what line 29 looks like   sub total      item  quantity      product  price       On localhost all works fine    Any ideas how to tackle this or what it is

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That s happen usually when you con-cat strings with   sign  In PHP you can make concatenation using dot sign     So sometimes I accidentally put   sign between two strings in PHP  and it show me this error  since you can use   sign in numbers only

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I had this issue with my pagination forward and backward link      simply set  int   in front of the variable  Page 1 and it worked       lt  php   Page    isset   GET  Page        GET  Page          if   int  Page 1 lt   PostPagination      gt   lt li gt   lt a href  Index php Page  lt  php echo  Page 1    gt   gt   amp raquo  lt  a gt  lt  li gt   lt  php     gt

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Not exactly the issue you had but the same error for people searching  This happened to me when I spent too much time on JavaScript  Coming back to PHP I concatenated two strings with   instead of   and got that error

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You can solve the problem without any new logic by just casting the thing into the number  which prevents the warning and is equivalent to the behavior in PHP 7 0 and below    sub total      int  item  quantity      int  product  price        The answer from Daniel Schroeder is not equivalent because  sub total would remain unset if non-numeric values are encountered  For example  if you print out  sub total  you would get an empty string  which is probably wrong in an invoice  - by casting you make sure that  sub total is an integer

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I encountered the issue in phpmyadmin with PHP 7 3  Thanks  coderama  I changed libraries DisplayResults class php line 855 from     Move to the next page or to the last one  endpos     SESSION  tmpval    pos           SESSION  tmpval    max rows      into     Move to the next page or to the last one  endpos    int   SESSION  tmpval    pos          int   SESSION  tmpval    max rows      Fixed

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In my case it was because of me used   as in other language but in PHP strings concatenation operator is

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It seems that in PHP 7 1  a Warning will be emitted if a non-numeric value is encountered  See this link   Here is the relevant portion that pertains to the Warning notice you are getting      New E WARNING and E NOTICE errors have been introduced when invalid   strings are coerced using operators expecting numbers or their   assignment equivalents  An E NOTICE is emitted when the string begins   with a numeric value but contains trailing non-numeric characters  and   an E WARNING is emitted when the string does not contain a numeric   value    I m guessing either  item  quantity   or  product  price   does not contain a numeric value  so make sure that they do before trying to multiply them  Maybe use some sort of conditional before calculating the  sub total  like so    lt  php  if  is numeric  item  quantity     amp  amp  is numeric  product  price          sub total      item  quantity      product  price       else        do some error handling

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Hello  In my case using  WordPress  and PHP7 4 I get a warning about numeric value issue  So I changed the old code as follow   From    val    oldval    val   To    val     int  oldval    int  val    Now the warning disappeared

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Solve this error on WordPress     Warning  A non-numeric value encountered in C  XAMPP htdocs aad-2 wp-includes SimplePie Parse Date php on line 694   Simple solution here     locate a file of wp-includes SimplePie Parse Date php find a line no  694 you show the code  second   round  match 6     match 7    pow 10  strlen  match 7       and change this 3   to this line  second   round  int  match 6     int  match 7    pow 10  strlen  match 7

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sn   0   increment the serial number  then add the sn to job for  x   0   x lt 20   x       sn     added date    10 10 10    job title    new job    salary    sn 1000   cd    27 10 2017    the closing date  ins    some institution    the institution for the vacancy   notes    some notes here    any notes about the jobs   sn div     lt div class  sn div  gt    sn   lt  div gt     ad div     lt div class  ad div  gt    added date   lt  div gt     job div     lt div class  job div  gt    job title   lt  div gt     salary div     lt div class  salary div  gt    salary   lt  div gt     cd div     lt div class  cd div  gt    cd   lt  div gt     cd means closing date  ins div     lt div class  ins div  gt    ins   lt  div gt     ins means institution  notes div     lt div class  notes div  gt    notes   lt  div gt        erroneous line   job no    job   sn   to create the job rows   job no     lt div class  job wrapper  gt    sn div  ad div  job div  salary div  cd div  ins div  notes div   lt  div gt     echo   job no   and then echo each job      that s the code I had which looped and created new html div elements  The code worked fine and the elements were formed  but i got the same warning in the error log   After reading the useful other answers  I figured that I was summing up a string and a number in the erroneous line  So I changed the code at that line to    erroneous line   job no    job  amp  amp  sn   this is the new variable that will create the job rows   Now the code works as earlier but with no warnings this time  Hope this example would be useful to someone

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sub total price   0    foreach  booking list as  key  gt  value             sub total price      price    quantity       echo  sub total price    it s working 100

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This was happening to me specifically on PHPMyAdmin  So to more specifically answer this  I did the following   In File   C  ampps phpMyAdmin libraries DisplayResults class php   I changed this      Move to the next page or to the last one  endpos     SESSION  tmpval    pos           SESSION  tmpval    max rows      To this    endpos   0  if   empty   SESSION  tmpval    pos     amp  amp  is numeric   SESSION  tmpval    pos            endpos      SESSION  tmpval    pos      if   empty   SESSION  tmpval    max rows     amp  amp  is numeric   SESSION  tmpval    max rows            endpos      SESSION  tmpval    max rows        Hope that save s someone some trouble

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If non-numeric value encountered in your code try below one  The below code is converted to float    PlannedAmount          empty string     if  is numeric  PlannedAmount                 PlannedAmount   floatval  PlannedAmount        echo  PlannedAmount    output   0

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Try this    sub total   0    and within your loop now you can use this   sub total      item  quantity      product  price       It should solve your problem

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I just looked at this page as I had this issue  For me I had floating point numbers calculated from an array but even after designating the variables as floating points the error was still given  here s the simple fix and example code underneath which was causing the issue   Example PHP   lt  php  subtotal   0    Warning fixed  shippingtotal   0    Warning fixed   price   array  row3  price      shipping   array  row3  shipping      values1   array sum  price    values2   array sum  shipping    float  subtotal     values1     float is irrelevant  subtotal creates warning  float  shippingtotal     values2     float is irrelevant  shippingtotal creates warning   gt

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in PHP if you use   for concatenation you will end up with this error  In php   is a arithmetic operator   https   www php net manual en language operators arithmetic php  wrong use of   operator                 lt label for  content  gt Content  lt  label gt                  lt textarea class  form-control col-xs-12  rows  7 cols  100  id  content  name  content  gt    initcontent   lt  textarea gt                                    lt  div gt      use   for concatenation   output     lt div class  from-group  gt                  lt label for  content  gt Content  lt  label gt                  lt textarea class  form-control col-xs-12  rows  7 cols  100  id  content  name  content  gt    initcontent   lt  textarea gt                                    lt  div gt

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Check if you re not incrementing with some variable that its value is an empty string like      Example    total        integers   range 1  5    foreach  integers as  integer         total     integer

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Make sure that your column structure is INT

[php] Warning: A non-numeric value encountered

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