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Top Forums Shell Programming and Scripting Use of expr to calc differenc ein to epoch values Post 303016665 by Don Cragun on Tuesday 1st of May 2018 10:12:22 PM
Old 05-01-2018
At the time that you define DATE_DIFF, INSERT_TIME has not yet been set. So DATE_DIFF, if your script were run now would provide an assignment similar to:
Code:
DATE_DIFF=`expr 1525226185 - `

which gets a syntax error when running expr because - is a binary operator and there is no second operand.

Maybe you meant to create a function named DATE_DIFF instead of a variable named DATE_DIFF?
 

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HW_GETOBJECT(3) 							 1							   HW_GETOBJECT(3)

hw_GetObject - Object record

SYNOPSIS
mixed hw_getobject (int $connection, mixed $objectID, [string $query]) DESCRIPTION
Gets an object record. If the second parameter is an array of integer the function will PARAMETERS
o $connection - The connection identifier. o $objectID - The object identifier, or an array of identifiers. o $query - The query string has the following syntax: <expr> ::= "(" <expr> ")" | "!" &lt;expr> | /* NOT */ <expr> "||" <expr> | /* OR */ <expr> "&amp;&amp;" <expr> | /* AND */ <attribute> <operator> <value> <attribute> ::= /* any attribute name (Title, Author, DocumentType ...) */ <operator> ::= "=" | /* equal */ "<" | /* less than (string compare) */ ">" | /* greater than (string compare) */ "~" /* regular expression matching */ RETURN VALUES
Returns the object record for the given object ID if the second parameter is an integer. If the second parameter is an array of integer the function will return an array of object records. In such a case the last parameter is also evaluated which is a query string. SEE ALSO
hw_getandlock(3), hw_getobjectbyquery(3). PHP Documentation Group HW_GETOBJECT(3)
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