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How to check the result of an exec in PHP?
If you do not want the function to append elements, call unset () on the array before passing it to exec () . If the result_code argument is present along with the output argument, then the return status of the executed command will be written to this variable. The last line from the result of the command.
What should I put at the end of PHP exec-manual?
There are a few thing that are important here. First of all: put the full path to the php binary, because this command will run under the apache user, and you will probably not have command alias like php set in that user. Seccond: Note 2 things at the end of the command string: the ‘2>&1’ and the ‘&’.
What do quotation marks mean in PHP exec?
When windows sees quotation marks (\\”) it thinks this is the window title, not the command. Quotation marks are mandatiory for window title. Otherwise windows thinks this is the program name. Weired, but “Hey! it’s Windows!” 🙂 exec strips trailing whitespace off the output of a command. This makes it impossible to capture signifigant whitespace.
What happens when PHP script is loaded more than once?
If a script (with the exec command) is loaded more than once by the same user at the same time the server will freeze. In my case the PHP script using the exec command was used as the source of an image tag.
Where does exec append to an array in PHP?
If the output argument is present, then the specified array will be filled with every line of output from the command. Trailing whitespace, such as , is not included in this array. Note that if the array already contains some elements, exec () will append to the end of the array.
How to write output of Ping in PHP?
You can write the output of ping in a file, and write a php script that will read the last line, then call this script with eventsource. if can resolve using apache execution user. if your root user is diffrent and server user different then it will not allow to execute command line command.