passthru Execute an external program and display raw output &reftitle.description; falsenullpassthru stringcommand intresult_code&null; The passthru function is similar to the exec function in that it executes a command. This function should be used in place of exec or system when the output from the Unix command is binary data which needs to be passed directly back to the browser. A common use for this is to execute something like the pbmplus utilities that can output an image stream directly. By setting the Content-type to image/gif and then calling a pbmplus program to output a gif, you can create PHP scripts that output images directly. &reftitle.parameters; command The command that will be executed. result_code If the result_code argument is present, the return status of the Unix command will be placed here. &reftitle.returnvalues; &return.nullorfalse; &reftitle.errors; Will emit an E_WARNING if passthru is unable to execute the command. Throws a ValueError if command is empty or contains null bytes. &reftitle.changelog; &Version; &Description; 8.0.0 If command is empty or contains null bytes, passthru now throws a ValueError. Previously it emitted an E_WARNING and returned &false;. &reftitle.notes; &warn.escapeshell; ¬e.exec-bg; &reftitle.seealso; exec system popen escapeshellcmd backtick operator