bw_trace_print_r() – safe print_r ?

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Description

safe print_r ?

Attempt to protect from a crash in print_r() when output buffering is active Note: ob_get_level() may return 1 when output buffering is not really nested.

Usage

$string = bw_trace_print_r( $text );

Parameters

$text

( mixed ) required –

Returns

string formatted output

Source

File name: oik-bwtrace/includes/bwtrace.php
Lines:

function bw_trace_print_r( $text ) {
  $handlers = ob_list_handlers();
  $output = null;
  if ( count( $handlers ) > 1 ) {
    $output = implode( ",", $handlers );
    $output .= "\n";
  }
  if ( count( $handlers ) > 1 ) {
    $output .= bw_trace_obsafe_print_r( $text );
  } else {
    // Sometimes we can run out of memory.
    // can we check current memory limit?
    $memusage = memory_get_usage( true );
    $peak_before = memory_get_peak_usage( true );
    $memory_limit = bw_trace_memory_limit_bytes();
    if ( ( $memory_limit - $memusage ) < 50000000 ) {
      bw_log( $memusage, $_SERVER['REQUEST_URI'] . ": Possible memory issues < 50MB free", false );
    }

    //$output .= bw_trace_obsafe_print_r( $text );
    $print_red =null;
    //$print_red =print_r( $text, true );
    $print_red .= bw_trace_obsafe_print_r( $text );
    $peak_after=memory_get_peak_usage( true );
    //$output    .=$memusage;
    $len = strlen( $print_red );
    if (  $len < 2097152 ) {
      $output.=$print_red;
    } else {
      $text = ": Too much data to trace: $len $memusage $peak_before $peak_after $memory_limit";
      bw_log( $len, $_SERVER['REQUEST_URI'] . $text, false  );
      $output.= $text;
      $output .= substr( $print_red, 0, 2097152 );
      //bw_backtrace();
    }

  }
  return $output;
}
 

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