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run code in 150+ php & hhvm versions
Bugs & Features
<?php class ToString { /** * This function will convert any variable to a string representation of that variable * * @param array $var The variable to print * @param int $max_lines Maximum number of lines that can be used * @param int $max_depth Maximum depth to print * @param int $min_depth Minimum depth to print * @return string String representation of Variable */ public static function variable( $var, $max_lines = 40, $max_depth = 6, $min_depth = 2 ) { $result = ToString::_varToString( $var, $max_lines, $max_depth, $min_depth )['text']; return $result; } /** * Recursive function to print out variables much like print_r * * @param array $var The variable to print * @param int $max_lines Maximum number of lines that can be used * @param int $max_depth Maximum depth to print * @param int $min_depth Minimum depth to print * @param int $depth Current Depth * @param int $lines Current Lines Used * @param int $lines_reserved Lines reserved for previous array depth * @param int $indent How much indentation to start on * @return string String representation of Variable */ protected static function _varToString( $var, $max_lines, $max_depth, $min_depth, $depth = 0, $lines = 1, $lines_reserved = 0, $indent = 0 ) { if ( is_string( $var ) ) { $return = "\"" . $var . "\""; } elseif ( is_array( $var ) ) { $return = ToString::print_array( $var, $max_lines, $max_depth, $min_depth, $depth, $lines, $lines_reserved, $indent ); } elseif ( is_null( $var ) ) { $return = 'NULL'; } elseif ( is_bool( $var ) ) { $return = ( $var ) ? 'true' : 'false'; } elseif ( is_object( $var ) ) { $return = 'Object( '. get_class( $var ) .' )'; } elseif ( is_resource( $var ) ) { $return = 'Resource( '. get_resource_type( $var ) .' )'; } else { $return = $var; } if ( is_array( $return ) ) { return $return; } else { return array( 'text' => $return, 'lines' => 1 ); } } /** * Recursive function to print out arrays much like print_r * * @param array $array The array to print * @param int $max_lines Maximum number of lines that can be used * @param int $max_depth Maximum depth to print * @param int $min_depth Minimum depth to print * @param int $depth Current Depth * @param int $lines Current Lines Used * @param int $lines_reserved Lines reserved for previous array depth * @param int $indent How much indentation to start on * @return string String representation of Array */ protected static function print_array( $array, $max_lines, $max_depth, $min_depth, $depth, $lines, $lines_reserved, $indent ) { $start_lines = $lines; $lines++; $count = count( $array ); if ( ! empty( $array ) && $depth < $max_depth && ( ( $depth <= $min_depth && $lines + $depth + 2 < $max_lines ) || ( $depth > $min_depth && ( $lines + $lines_reserved - 1 ) < $max_lines ) ) ) { $lines += 2; $return = "Array\n" . ToString::indent( "(\n", $indent ); $indent++; foreach ( $array as $key => $value ) { $result = ToString::_varToString( $value, $max_lines, $max_depth, $min_depth, $depth + 1, $lines, $lines_reserved + $count, $indent + 1 ); $count--; $lines += $result['lines']; $return .= ToString::indent( "[$key] => ". $result['text'] ."\n", $indent ); if ( ( ( $depth <= $min_depth && ( $lines + $depth ) > $max_lines ) || ( $depth > $min_depth && ( $lines + $lines_reserved ) >= $max_lines + $depth ) ) && ( $count != 1 ) ) { if ( $count > 0 ) { $return .= ToString::indent( "... ($count)\n", $indent ); $lines++; } break; } } $indent--; $return .= ToString::indent( ")", $indent ); } else { if ( ! empty( $array ) ) { $return = "Array($count)"; } else { $return = "Array()"; } } return array( 'text' => $return, 'lines' => ( $lines - $start_lines ) ); } /** * Indent current string * * @param string $string String to indent * @param int $indent Number of Indentations * @param string $tab What a tab should look like * @return string Indented String */ protected static function indent( $string, $indent, $tab = " " ) { $pre = ''; for ( $i = 0; $i < $indent; $i++ ) { $pre .= $tab; } return $pre . $string; } /** * Converts an Exception to string * * This try's to replicate PHP's __toString for exceptions, however, it doesn't cut off * long strings and also shows variables * @param Object $e Exception Object * @return string Exception as String */ public static function exception( $e ) { $class = get_class( $e ); $file = $e->getFile(); $lineNr = $e->getLine(); $message = $e->getMessage(); $code = ""; if ( $e->getCode() ) $code = ' and code \''. $e->getCode() .'\''; $exceptionAsString = "Exception '$class' with message '$message'$code in $file:$lineNr\nStack trace:\n\n"; $exceptionAsString .= ToString::trace( $e->getTrace() ); return $exceptionAsString; } /** * Convert exception trace array to string * * @param array/object $trace Exception or trace array to convert to string * @return string String of Exception trace */ public static function trace( $trace ) { if ( is_object( $trace ) ) { $trace = $trace->getTrace(); } if ( ! is_array( $trace ) ) { return false; } $traceAsString = ""; $count = 0; foreach ( $trace as $frame ) { $args = ""; if ( isset( $frame['args'] ) ) { $args = array(); $expanded_args = ""; foreach ( $frame['args'] as $arg ) { $args[] = ToString::variable( $arg, 1 ); foreach( preg_split( "/(\n)/", ToString::variable( $arg ) ) as $line ) $expanded_args .= "# $line\n"; } $args = join( ", ", $args ); } if ( isset( $frame['file'] ) ) $format = "#%s %s(%s): %s(%s)\n%s\n\n"; else $format = "#%s [internal function]: %4\$s(%5\$s)\n%6\$s\n\n"; $traceAsString .= sprintf( $format, $count, isset( $frame['file'] ) ? $frame['file'] : 'unknown file', isset( $frame['line'] ) ? $frame['line'] : 'unknown line', ( isset( $frame['class'] ) ) ? $frame['class'].$frame['type'].$frame['function'] : $frame['function'], $args ? " $args " : "", $expanded_args ); $count++; } return $traceAsString; } }
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/1R4NC on line 17
Process exited with code 255.