Check string length in PHP

Question

I have a string that is 141 characters in length  Using the following code I have an if statement to return a message if the string is greater or less than 140   libxml use internal errors TRUE    dom   new DOMDocument     dom- gt loadHTMLFile  source    xml   simplexml import dom  dom   libxml use internal errors FALSE    message    xml- gt xpath    div  class  contest       if  strlen  message   lt  141       echo  There Are No Contests      elseif strlen  message   gt  142       echo  There is One Active Contest        I used var dump on  message and it shows the string is  0   gt  string 141   Here is my problem  When I change the numbers for the if statement to  lt 130 and  gt 131  it still returns the first message  although the string is greater than 131   No matter what number I use less than 141 I always get  There Are No Contests   returned to me

User · Answer

The xpath   function does not return a string  It returns an array with XML elements  of type SimpleXMLElement   which may be casted to a string   if  count  message        if  strlen  string  message 0    lt  141          echo  There Are No Contests            else if strlen  string  message 0    gt  142          echo  There is One Active Contest

User · Answer

0   gt  string 141  means  message is an array so you should do strlen  message 0    lt  141

User · Answer

0   gt  string 141  means that  message is an array  not string  and  message 0  is a string with 141 characters in length

User · Answer

Try the common syntax instead   if  strlen  message  lt 140        echo  less than 140     else     if  strlen  message  gt 140            echo  more than 140             else           echo  exactly 140

User · Answer

An XPath solution is to use   string-length    div  class  contest     k     where  k should be substituted by a number   This evaluates to the string length of the  k-th  in document order  div in the XML document that has a class attribute with value  contest

User · Answer

message is propably not a string at all  but an array  Use  message 0  to access the first element

User · Answer

Because  xml- gt xpath always return an array  and strlen expects a string

[php] Check string length in PHP

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