(PECL xhprof >= 0.9.0)
Start xhprof profiler
void xhprof_enable ([ int $flags = 0 [, array $options ]] )
Start xhprof profiling.
Parameters:
flags
Optional flags to add additional information to the profiling. See the XHprof constants for further information about these flags, e.g., XHPROF_FLAGS_MEMORY
to enable memory profiling.
options
An array of optional options, namely, the 'ignored_functions' option to pass in functions to be ignored during profiling.
Returns:
NULL
Changelog:
0.9.2
The optional options
parameter was added.
Examples:
xhprof_enable() examples
<?php // 1. elapsed time + memory + CPU profiling; and ignore built-in (internal) functions xhprof_enable(XHPROF_FLAGS_NO_BUILTINS | XHPROF_FLAGS_CPU | XHPROF_FLAGS_MEMORY); // 2. elapsed time profiling; ignore call_user_func* during profiling xhprof_enable( 0, array('ignored_functions' => array('call_user_func', 'call_user_func_array'))); // 3. elapsed time + memory profiling; ignore call_user_func* during profiling xhprof_enable( XHPROF_FLAGS_MEMORY, array('ignored_functions' => array('call_user_func', 'call_user_func_array'))); ?>
See also:
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